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This article explores the integration of culturo-behavior science and contextual behavior science (CBS2) to address global rights violations and promote social change. It emphasizes the role of culture in behavior and the importance of intentional change within sociocultural contexts. The authors argue for collaboration between these perspectives to advance applied research and practice in behavior science. The text also discusses the impact of language and cognition on culturo-behavior science and highlights the significance of relational responding in the development of cultural practices and the spread of propaganda. It concludes by emphasizing the need for a systemic and contextual approach to studying complex social issues and the role of communication in cultural practices. [Extracted from the article]

This randomized controlled trial evaluated the effectiveness of a 3-week multicomponent positive psychology self-help application on ability to adapt and mental well-being in the following the Covid-19 pandemic in adults with mild to moderate anxiety and depression levels. Outcomes were assessed online at baseline, posttest (three weeks after baseline), and follow-up (12 weeks after baseline). The intervention group (n = 118) received the application after baseline, whereas the control group (n = 116) received the app after completing posttest. Linear mixed models showed significant effects on ability to adapt, mental well-being, anxiety, depression, spiritual well-being, and self-compassion at post-test compared to the control condition (d = 0.56–0.96). Effects in the intervention group were maintained at follow-up. Results suggest that a multicomponent positive psychology self-help application can support adults with distress to recover after a psychologically disruptive pandemic. Clinical Trial Registration ClinicalTrials.gov (NCT05292560). [ABSTRACT FROM AUTHOR]

This study aims to explore the effect of psychological guidance and sandplay therapy in the intervention of adolescent mental health. In this study, adolescents aged 12 to 18 hospitalized for various illnesses, accidents and other reasons were taken as the research objects, and then the application of sandplay to the mental health intervention of hospitalized sick adolescents was proposed. The collected research objects were randomly classified into experimental and control groups through a questionnaire survey. The experimental group used a combination of psychological guidance and sandplay therapy. Lastly, statistical analysis was conducted on four dimensions: emotional state, social function, self-awareness, and psychological adaptation using psychological assessment scales. The results found that after psychological counseling and sandplay therapy intervention, only about 22% of participants in the experimental group showed low mood, nervousness, and anger, and significantly improved scores in social function, self-recognition, and psychological adaptability. In terms of emotional state, the experimental group scored lower, indicating that participants in the experimental group were less likely to experience depression, anxiety, and anger. In contrast, the control group scored higher, suggesting a noticeable intervention effect of psychological guidance and sandplay therapy. These results suggest the comprehensive application of psychological guidance and sandplay therapy positively impacts adolescent mental health intervention's emotional state and psychological adaptation. Integrating the use of psychological guidance and sandplay therapy can provide useful enlightenment for the follow-up exploration and optimization of adolescent mental health problems. [ABSTRACT FROM AUTHOR]

The present study evaluated the use of computerized equivalence-based instruction (EBI) to teach classes representing schedules of reinforcement to staff members. Four, 5-member classes representing fixed ratio, fixed interval, variable ratio, and variable interval schedules of reinforcement were taught. The participants were 16 staff members between the ages of 22 and 30 years of age that were employed at a private school for individuals with autism. Participants were randomly assigned to either an experimental or control group. A pretest-training-posttest-maintenance design was used to evaluate the effects of EBI on participants' performance during both a computer-based test and a written multiple-choice test. Participants in the control group were only exposed to pretest and posttests. All participants in the experimental group acquired the baseline trained relations during match-to-sample instruction. Test scores improved from pretest to posttest and derived (untrained) relations emerged across all participants in the experimental group following training but did not change for the participants in the control group. In addition, participants maintained the learned relations one week after EBI was completed. The present study demonstrated that EBI is an effective teaching procedure to teach schedules of reinforcement to staff members in the field of applied behavior analysis. [ABSTRACT FROM AUTHOR]

Rationale: Schedule-induced drinking (SID) reproduces an excessive and repetitive behavioural pattern that has led to propose this procedure as an animal model to study compulsive behaviours. Although it is known that cannabis can cause several adverse effects, in recent years there has been great interest in the medical application of cannabis derivatives for obsessive-compulsive related disorders. Objectives: The present study investigated the effects of repeated THC administration on rates of previously acquired SID, as well as the possible alteration of its temporal distribution along inter-food intervals. Methods: Male Wistar rats acquired SID under a 30 min fixed-time 30-sec food delivery schedule (from 30 to 43 sessions to reach a stable level). Thereafter, 5 or 10 mg/kg daily i.p. injections of THC or vehicle were repeatedly administered for 7 days to evaluate the effects on SID. Results: Repeated THC administration at a dose of 5 mg/kg resulted in an increase on licking. Surprisingly, no effects on SID were observed with the 10 mg/kg dose. However, magazine entries were reduced with both THC doses. THC also modified the temporal distributions of licking and magazine entries during inter-food intervals. Conclusions: The present results show that repeated THC administration may (i) increase induced licking at moderate doses, (ii) reduce magazine entries, and (iii) affect the temporal pattern of SID. These findings suggest that THC does not appear to be beneficial to reduce compulsive behaviour in this animal model, while another collateral effect of THC —such as a greater habitual-like behaviour— needs to be considered. [ABSTRACT FROM AUTHOR]

Background and purpose: The use of the recreational drug gamma-hydroxybutyric acid (GHB) has increased over the past decade, concomitantly leading to a higher incidence of GHB use disorder. Evidence-based treatment interventions are hardly available and cognitive effects of long-term GHB use remain elusive. In order to study the development of GUD and the causal effects of chronic GHB consumption, a GHB self-administration model is required. Experimental approach: Long Evans rats had access to GHB in their home cage according to a two-bottle choice procedure for 3 months. Intoxication and withdrawal symptoms were assessed using an automated sensor-based setup for longitudinal behavioral monitoring. Rats were trained in an operant environment according to a fixed ratio (FR) 1, 2, and 4 schedule of reinforcement. Addiction-like behaviors were assessed through progressive ratio-, non-reinforced-, and quinine-adulterated operant tests. In addition, the novel object recognition test and elevated plus maze test were performed before and after GHB self-administration to assess memory performance and anxiety-like behavior, respectively. Key results: All rats consumed pharmacologically relevant levels of GHB in their home cage, and their intake remained stable over a period of 3 months. No clear withdrawal symptoms were observed following abstinence. Responding under operant conditions was characterized by strong inter-individual differences, where only a subset of rats showed high motivation for GHB, habitual GHB-seeking, and/or continued responding for GHB despite an aversive taste. Male rats showed a reduction in long-term memory performance 3 months after home-cage GHB self-administration. Anxiety-like behavior was not affected by GHB self-administration. Conclusion and implications: The GHB self-administration model was able to reflect individual susceptibility for addiction-like behavior. The reduction in long-term memory performance upon GHB self-administration calls for further research into the cognitive effects of chronic GHB use in humans. [ABSTRACT FROM AUTHOR]

The term "economon" (i:'ka.nə.muhn; plural: economa) is introduced here to describe an economic unit composed of two participants engaged in mutually reinforcing operant behavior. Economa are basic building blocks of transactional behavior that aggregate in social networks called economies. In a drug-addiction economon, operant behavior by one participant (the "supplier") provides an addictive drug as a reinforcer to the second participant (a "Person with Substance Use Disorder; PwSUD"). Reciprocal operant behavior by the PwSUD usually provides money as a reinforcer to the supplier. After defining the features of the drug-addiction economon, this article discusses its implications for (1) prevalence and virulence of drug addiction, (2) opportunities for drug-addiction research in general, (3) the "brain-disease model of addiction" in particular, and (4) factors that mitigate harm or promote risk of drug addiction. The economon model is intended to provide a novel perspective on the uniquely human disorder of drug addiction. [ABSTRACT FROM AUTHOR]

Rationale: Alcohol use disorder (AUD) is a debilitating physiological and psychiatric disorder which affects individuals globally. The current pharmacological interventions to treat AUD are limited, and hence there is an urgent need for a novel pharmacological therapy which can be effective and safe across the population. Objective: We aimed to investigate a novel neutral cannabinoid receptor-1 (CB1R) antagonist, AM6527, in several preclinical models of ethanol consumption using male and female C57BL6/J mice. Methods: Independent groups of male and female mice were subjected to repeated cycles of drinking in the dark (DID), or intermittent access to alcohol (IAA) procedures. Twenty minutes prior to ethanol access in each procedure, animals were treated with intraperitoneal injections of either 1, 3, and 10 mg/kg of AM6527 or its respective vehicle. Acamprosate (100, 200, 300, and 400 mg/kg) or its respective vehicle was used as a positive control. Separate groups of male mice were subjected to a chain schedule of ethanol reinforcement to gain access to ethanol wherein completion of a fixed interval (FI; 5 min) schedule (link 1: "Seeking") was reinforced with continuous access to ethanol (fixed ratio; FR1) for up to 1.8 g/kg (link 2: "consumption"). All the animals were treated with 1, 3, and 10 mg/kg of AM6527 or its respective vehicle 20 mins prior to the start of the FI chain of the procedure. Separately, AM6527 was also evaluated in male and female mice undergoing acute ethanol withdrawal following 8 weeks of intermittent or continuous access to 20% ethanol drinking. Results: In both DID and IAA procedures, AM6527 reduced ethanol consumption in a dose-related manner in both male and female mice. AM6527 produced no tolerance in the DID procedure; mice treated with 3 mg/kg of AM6527 for 3 weeks continuously drank significantly smaller amounts of ethanol as compared to vehicle-treated mice over a period of three DID cycles. Moreover, in the IAA procedure, AM6527 caused an increase in water intake over the 24-h period. Acamprosate transiently reduced ethanol intake in male mice in both the DID and the IAA procedures but failed to produce any significant effect in female mice. AM6527 also produced a decrease in the FI responding ("ethanol seeking") in animals trained to self-administer ethanol. Lastly, AM6527 mitigated neurological withdrawal signs, i.e., handling induced convulsions (HIC) in mice undergoing acute ethanol withdrawal. Conclusions: Current findings support previous studies with CB1R neutral antagonist in reducing voluntary ethanol intake and seeking behavior. Based on results shown in this work, AM6527 can be developed as a first in class CB1R neutral antagonist to treat AUD in both males and females. [ABSTRACT FROM AUTHOR]

People's reasons for goal pursuit strongly relate to well-being. An important concept that captures differences in the reasons for goal pursuit is the goal-striving reasons framework. Until today, it remains unclear whether the goal-striving reasons framework relates differently to the well-being of particular groups of people. Using the positive-activity model as a guiding framework, the paper at hand analyses a number of person-related characteristics which are relevant in a goal-setting context and are assumed to change the relationship between goal-striving reasons and well-being. Employing a large cumulative data set the person-related characteristics comprise of demographic variables (age, gender, managerial status) and selected well-being related variables (assertiveness, burnout, engagement, goal progress). Using correlation analyses in conjunction with Fisher's z-test the results show that contrary to older employees (aged 24 or older) the goal-striving reasons of younger people are not related to their well-being. Women's self-esteem reasons are more strongly related to well-being than they are for men. People's goal-striving reasons are more strongly associated with well-being for people with high levels of assertiveness, low levels of burnout, or high levels of engagement. The findings have implications for the delivery of the Happiness through Goal Setting Training, a Positive Psychology Intervention based on the goal-striving reasons framework, as it identifies various alterations of the training to cater for the needs of these subgroups. [ABSTRACT FROM AUTHOR]

Rationale: Previous studies in socially housed monkeys examining acquisition of cocaine self-administration under fixed-ratio (FR) schedules of reinforcement found that subordinate males and dominant females were more vulnerable than their counterparts. Objectives: The present studies extended these findings in two ways: (1) to replicate the earlier study, in which female monkeys were studied after a relatively short period of social housing (~ 3 months) using cocaine-naïve female monkeys (n = 9; 4 dominant and 5 subordinate) living in well-established social groups (~ 18 months); and (2) in male monkeys (n = 3/social rank), we studied cocaine acquisition under a concurrent schedule, with an alternative, non-drug reinforcer available. Results: In contrast to earlier findings, subordinate female monkeys acquired cocaine reinforcement (i.e., > saline reinforcement) at significantly lower cocaine doses compared with dominant monkeys. In the socially housed males, no dominant monkey acquired a cocaine preference (i.e., > 80% cocaine choice) over food, while two of three subordinate monkeys acquired cocaine reinforcement. In monkeys that did not acquire, the conditions were changed to an FR schedule with only cocaine available and after acquisition, returned to the concurrent schedule. In all monkeys, high doses of cocaine were chosen over food reinforcement. Conclusions: The behavioral data in females suggests that duration of social enrichment and stress can differentially impact vulnerability to cocaine reinforcement. The findings in socially housed male monkeys, using concurrent food vs. cocaine choice schedules of reinforcement, confirmed earlier social-rank differences using an FR schedule and showed that vulnerability could be modified by exposure to cocaine. [ABSTRACT FROM AUTHOR]

Prioritizing positivity is effective in enhancing positive emotional experiences in everyday life. While a measure of prioritizing positivity is imperative for positive psychology interventions, no scale has been developed to measure this construct for Italian speakers. The current study developed and examined the psychometric properties of an Italian version of the Prioritizing Positivity Scale (I-PPS). Italian participants (N = 501) completed self-report measures of the I-PPS, broad personality, related psychological constructs, and indicators of well-being. Results showed strong evidence for a unidimensional model with factor loadings ranging from 0.67 to 0.82. Correlations in the expected directions were found between the I-PPS and broad personality traits, related psychological constructs, and well-being. Gender and language measurement invariance of the I-PSS revealed strict invariance between genders and metric invariance between the English (N = 642) and Italian versions. Overall, this study provides preliminary evidence that the I-PPS has adequate psychometric properties. As such, the scale could be used in future studies to advance theories, design experiments, and measure the efficacy of positive psychology interventions. [ABSTRACT FROM AUTHOR]

The present study examined whether both dispositional mindfulness without mindfulness training and mindfulness resulting from longer-term mindfulness training are positively associated with pre-adolescents' well-being, via enhanced executive functioning (EF) and emotion regulation. EF was assessed in a GoNoGo task via behavioral performance and event-related potentials. Study 1 (N = 62) investigated associations of dispositional mindfulness without mindfulness training with EF, well-being and emotion regulation; longitudinal Study 2 with an active control group compared the effects of long-term mindfulness training (N = 28) with a positive psychology intervention (N = 15). Dispositional mindfulness without training was associated with lower EF, unrelated to emotion regulation and the relationship with well-being was mixed. Long-term mindfulness training was positively related to EF and well-being (reduced negative affect), but was uncorrelated with emotion regulation and mindfulness scores. Taken together, long-term mindfulness training was found to have mixed effects. Further research is required in this area. [ABSTRACT FROM AUTHOR]

To explore the effects of social support and positive psychological intervention on subjective well-being and depression of left-behind children. 70 left-behind children with depression tendency participated in this study and were divided into experimental and control groups. The experimental group received a two-year-long psychological intervention of social support in 269 social support activities about 8 themes and positive psychological quality cultivation group counseling with a total of 128h for 64 frequencies. We found that after a consecutive positive psychology intervention and group counseling, the level of subjective well-being of left-behind children significantly improved, and the level of depression decreased significantly. These results showed that both sufficient and diversified social support approaches and the cultivation of positive psychological qualities may significantly improve the subjective well-being of left-behind children and relieve or eliminate their depressive symptoms. [ABSTRACT FROM AUTHOR]

Pain-associated approach and avoidance behaviours are critically involved in the development and maintenance of chronic pain. Empirical research suggests a key role of operant learning mechanisms, and first experimental paradigms were developed for their investigation within a controlled laboratory setting. We introduce a new Virtual Reality paradigm to the study of pain-related behaviour and investigate pain experiences on multiple dimensions. The paradigm evaluates the effects of three-tiered heat-pain stimuli applied contingent versus non-contingent with three types of arm movements in naturalistic virtual sceneries. Behaviour, self-reported pain-related fear, pain expectancy and electrodermal activity were assessed in 42 healthy participants during an acquisition phase (contingent movement-pain association) and a modification phase (no contingent movement-pain association). Pain-associated approach behaviour, as measured by arm movements followed by a severe heat stimulus, quickly decreased in-line with the arm movement-pain contingency. Slower effects were observed in fear of movement-related pain and pain expectancy ratings. During the subsequent modification phase, the removal of the pain contingencies modified all three indices. In both phases, skin conductance responses resemble the pattern observed for approach behaviour, while skin conductance levels equal the pattern observed for the self-ratings. Our findings highlight a fast reduction in approach behaviour in the face of acute pain and inform about accompanying psychological and physiological processes. We discuss strength and limitations of our paradigm for future investigations with the ultimate goal of gaining a comprehensive understanding of the mechanisms involved in chronic pain development, maintenance, and its therapy. [ABSTRACT FROM AUTHOR]

Despite the popularity of fiber photometry (FP), its integration with operant behavior paradigms is progressing slowly. This can be attributed to the complex protocols in operant behavior – resulting in a combination of diverse non-predictable behavioral responses and scheduled events, thereby complicating data analysis. To overcome this, we developed Pyfiber, an open-source python library which facilitates the merge of FP with operant behavior by relating changes in fluorescent signals within a neuronal population to behavioral responses and events. Pyfiber helps to 1. Extract events and responses that occur in operant behavior, 2. Extract and process the FP signals, 3. Select events of interest and align them to the corresponding FP signals, 4. Apply appropriate signal normalization and analysis according to the type of events, 5. Run analysis on multiple individuals and sessions, 6. Collect results in an easily readable format. Pyfiber is suitable for use with many different fluorescent sensors and operant behavior protocols. It was developed using Doric lenses FP systems and Imetronic behavioral systems, but it possesses the capability to process data from alternative systems. This work sets a solid foundation for analyzing the relationship between different dimensions of complex behavioral paradigms with fluorescent signals from brain regions of interest. [ABSTRACT FROM AUTHOR]

The network approach poses an alternative focus to understand psychological constructs as emerging from mutual interactions among indicators. Network psychometrics has been applied to psychopathology to unravel the connections between symptoms, but it can also be applied to the study of well-being. The role of character strengths in mental health is at the forefront of research attention. Previous findings suggest that heart character strengths are more predictive of mental health than mind character strengths. Nevertheless, researchers have rarely applied the network approach in this context. The present study examines, from the network approach, the connections between heart and mind character strengths and mental health. Building upon the dual-factor model of mental health, positive (i.e., happiness and life satisfaction) and negative indicators (i.e., depression) were included in the assessment of this construct. A sample of 597 Spanish undergraduates (M = 23.52; SD = 5.25; 75.6% females) completed cross-sectional self-report measures. Network analysis was used to estimate a network composed of two communities: character strengths and mental health. We used centrality analysis to calculate the importance of each node and bridge centrality to examine the interactions between the communities. The results indicated that the heart strengths of love, zest, hope, and gratitude reported the highest bridge strength centrality, suggesting that they played an intermediary role activating and deactivating components of mental health. Adopting the network approach to explore the connections between character strengths and mental health can help design focused intervention strategies in psychology. [ABSTRACT FROM AUTHOR]

Rationale: Designer receptors exclusively activated by designer drugs (DREADDs) are a tool for "remote control" of defined neuronal populations during behavior. These receptors are inert unless bound by an experimenter-administered designer drug, commonly clozapine-n-oxide (CNO). However, questions have emerged about the suitability of CNO as a systemically administered DREADD agonist. Objectives: Second-generation agonists such as JHU37160 (J60) have been developed, which may have more favorable properties than CNO. Here we sought to directly compare effects of CNO (0, 1, 5, & 10 mg/kg, i.p.) and J60 (0, 0.03, 0.3, & 3 mg/kg, i.p.) on operant food pursuit. Methods: Male and female TH:Cre + rats and their wildtype (WT) littermates received cre-dependent hM4Di-mCherry vector injections into ventral tegmental area (VTA), causing inhibitory DREADD expression in VTA dopamine neurons of TH:Cre + rats. All rats were trained to stably lever press for palatable food on a fixed ratio 10 schedule, and doses of both agonists were tested on separate days in counterbalanced order. Results: All three CNO doses reduced operant rewards earned in rats with DREADDs, and no CNO dose had behavioral effects in WT controls. The highest J60 dose tested significantly reduced responding in DREADD rats, but this dose also increased responding in WTs, indicating non-specific effects. The magnitude of CNO and J60 effects in TH:Cre + rats were correlated and were present in both sexes. Conclusions: Findings demonstrate the usefulness of directly comparing DREADD agonists when optimizing behavioral chemogenetics, and highlight the importance of proper controls, regardless of the DREADD agonist employed. [ABSTRACT FROM AUTHOR]

Anisotropic and efficient transport of ions under external stimuli governs the operation and failure mechanisms of energy-conversion systems and microelectronics devices. However, fundamental understanding of ion hopping processes is impeded by the lack of atomically precise materials and probes that allow for the monitoring and control at the appropriate time- and length- scales. In this work, using in-situ transmission electron microscopy, we directly show that oxygen ion migration in vacancy ordered, semiconducting SrFeO2.5 epitaxial thin films can be guided to proceed through two distinctly different diffusion pathways, each resulting in different polymorphs of SrFeO2.75 with different ground electronic properties before reaching a fully oxidized, metallic SrFeO3 phase. The diffusion steps and reaction intermediates are revealed by means of ab-initio calculations. The principles of controlling oxygen diffusion pathways and reaction intermediates demonstrated here may advance the rational design of structurally ordered oxides for tailored applications and provide insights for developing devices with multiple states of regulation. Control of ion diffusion is instrumental in understanding the behavior and structural transformations of transition metal oxides. Here, the authors use in-situ TEM to reveal the atomic-scale evolution of the topotactic phase transition in BM-SFO triggered by the migration of oxygen ions under an external stimulus. [ABSTRACT FROM AUTHOR]

This study sought to replicate a model developed to explain the problem-solving process through insight with human participants. This process happens when an organism solves a problem by producing a behavior chain with at least two operant behaviors that share similar consequences during acquisition but in different contexts. We recruited six participants aged between 20 and 30 years old with a low level of previous experience in first-person video games. They also did not have significant experience with the Portal 2 game and had adequate structural conditions to participate in the experiment remotely. The procedure has five phases: familiarization, pretest, practicing of behaviors not necessary for problem solving, practicing of behaviors necessary for problem solving, and posttest. As a result, three participants solved the problem only in the posttest, one solved it in the pretest phase, and two did not solve it in any of their presentations. However, all participants issued the necessary behaviors to solve the problem. For future experiments, it is encouraged that changes in the problem-solving situation occur that seek to increase the probability of solving the problem once the participant emits the necessary behaviors. [ABSTRACT FROM AUTHOR]

This review aimed to assess the use of positive psychology interventions (PPIs), such as using positive mantras, expressive writing, or gratitude diaries, to improve the health behaviours, psychological wellbeing and/or physical health of police staff. The review was registered on PROSPERO before 16 electronic databases were searched for published articles between January 1999 and February 2022. Included studies offered PPIs to improve the physical health (body mass index, blood pressure), psychological well-being (stress, anxiety, mood, emotion, depression, self-efficacy), or health behaviours (physical activity, sitting times, dietary habits, alcohol, or tobacco use) of police staff. The mixed methods appraisal tool (MMAT) was used to assess the risk of bias of included papers. The initial search yielded 4560 results; with 3385 papers remaining after duplicates were removed. Of these, 15 studies were included in the final review. Intervention types included mindfulness-based resilience training (n = 11), physical or wellness practice classes (n = 1), role-play and scenario-based interventions (n = 2) and expressive writing (n = 1). Mindfulness-based interventions improved many psychological wellbeing facets such as anxiety, depression, negative affect and quality of life. Limited improvements were observed for some health behaviours such as alcohol consumption and in self-reported general health. Expressive writing and role-play-based interventions were effective in reducing stress and anxiety, however, improvement in depression scores were inconsistent across studies. Positive psychology interventions are promising to support the health and wellbeing of police staff. Future research should investigate their mechanisms of action to support future innovation in support for police wellbeing. [ABSTRACT FROM AUTHOR]

The demonstration that unconscious learning supports instrumental behaviors (i.e., choosing the stimuli that lead to rewards) is central for the tenet that unconscious cognition sustains human adaptation. Recent studies, using reliable subliminal conditioning paradigms and improved awareness measurements have found evidence against unconscious knowledge sustaining accurate instrumental responses. The present preregistered study proposes a paradigm, in which unconscious processing is stimulated not by subliminally exposing the predictive (conditioned) stimuli, but by employing predictive regularities that are complex and difficult to detect consciously. Participants (N = 211) were exposed to letter strings that, unknown to them, were built from two complex artificial grammars: a "rewarded" or a "non-rewarded" grammar. On each trial, participants memorized a string, and subsequently had to discriminate the memorized string from a distractor. Correct discriminations were rewarded only when the identified string followed the rewarded grammar, but not when it followed the non-rewarded grammar. In a subsequent test phase, participants were presented with new strings from the rewarded and from the unrewarded grammar. Their task was now to directly choose the strings from the rewarded grammar, in order to collect more rewards. A trial-by-trial awareness measure revealed that participants accurately choose novel strings from the rewarded grammar when they had no conscious knowledge of the grammar. The awareness measure also showed that participants were accurate only when the unconsciously learned grammar led to conscious judgments. The present study shows that unconscious knowledge can guide instrumental responses, but only to the extent it supports conscious judgments. [ABSTRACT FROM AUTHOR]

Rationale: Alcohol use disorder remains a leading cause of preventable deaths, and current treatments have limited efficacy. Glucagon-like peptide 1 (GLP-1) receptor agonists can reduce alcohol drinking in preclinical studies, but mechanisms are still not fully understood, and data in female subjects are scarce. Objectives: To assess whether the GLP-1 receptor agonist exendin-4 could decrease alcohol-seeking behavior in the absence of alcohol consumption or intoxication, to compare the potency and efficacy of exendin-4 in the reduction of alcohol seeking vs. alcohol taking, and to compare effects between male and female mice. Methods: Male and female C57BL/6J mice were trained to self-administer 20% alcohol under an FR 1 schedule of reinforcement. After extinction, systemic exendin-4 (saline, 1.8, and 3.2 μg/kg) was tested in cue-induced reinstatement of alcohol seeking. Effects of exendin-4 on alcohol self-administration were tested in a separate group. Results: Exendin-4 suppressed reinstatement of alcohol seeking to extinction levels, at both doses, in the male mice, but had no effect in the female mice. Both doses of exendin-4 also significantly decreased alcohol self-administration in male mice; females again showed less pronounced effects. Conclusions: In male mice, exendin-4 appeared more effective at suppressing alcohol seeking in the absence of alcohol relative to alcohol self-administration, consistent with modulation of alcohol reward or inhibitory control, rather than satiety or aversive effects of alcohol. We saw marked sex differences with less effect of exendin-4 in female mice, and it will be important to include both sexes in further investigations into GLP-1 receptor agonists. [ABSTRACT FROM AUTHOR]

A straightforward approach to establishing that a stimulus functions as a punisher is to superimpose a single-alternative punishment schedule on a concurrent schedule of reinforcement with equal scheduled reinforcement on the two alternatives. If the stimulus acts as a punisher, there should be a shift in preference away from the punished alternative and toward the unpunished alternative. We replicated this experiment with the Procedure for Rapidly Establishing Steady-State Behavior (PRESS-B) using point-loss as the punisher. Twenty-four participants worked on sets of three concurrent random-interval random-interval (conc RI RI) schedules of reinforcement: one with no punishment ("baseline" condition) and two with punishment where an RI schedule of punishment was superimposed on one of the alternatives. Compared to their respective baseline conditions, all punished conditions showed a decreased median proportion of time allocated to the punished alternative. This successful replication supports the use of point-loss punishment in PRESS-B, which means that researchers can use the procedure to further study the effects of punishment on human operant behavior. [ABSTRACT FROM AUTHOR]

Relational frame theory (RFT) sees temporal relational responding (e.g., A is after B; B is before A) as a key operant skill involved in the understanding of time. From this perspective relating events temporally is important for everyday life situations such as sequencing events, planning, and talking about the past or future. The aim of the present research was to assess performance on a test of temporal relational responding in young children at increasing levels of complexity. Twenty-five typically developing children between 3 and 8 years were assessed on tasks of nonarbitrary (i.e., based on physical events) and arbitrary (i.e., based on contextual cues only) temporal relations. Results showed a correlation between overall performance across temporal relational responding tasks and age. Performance on nonarbitrary "before" and "after" trials improved similarly with age whereas with arbitrary relations, participants performed much more poorly on "after" trials than on "before" trials and some interesting cohort specific patterns were also seen. Implications of the results and future research directions are discussed. [ABSTRACT FROM AUTHOR]

As the science of wellbeing has grown, universities have adopted the challenge of prioritizing the wellbeing of students. Positive psychology interventions (PPIs), activities designed to increase the frequency of positive emotions and experiences, which help to facilitate the use of actions and thoughts that lead to human flourishing, are being increasingly used worldwide. Known to boost wellbeing and a number of other variables, it nonetheless remains unknown whether their use can influence other variables in non-Western cultures. In this study, we determined the impact of PPIs on a variety of wellbeing outcomes. The 6-week PPI program was conducted in the United Arab Emirates on Emirati university students (n = 120) who reported more positive emotion and overall balance of feelings that favored positivity over time relative to a control group. Yet, there was no effect found on negative emotions, life satisfaction, perceived stress, fear of happiness, locus of control, or somatic symptoms, and no effect on levels of collectivism or individualism. Our findings nonetheless support the use of PPIs in higher education as they show an increase in the experience of positive emotion, with this in itself bringing positive life outcomes, and no negative impact on culture. Our findings serve to build a foundation for understanding for whom PPIs work best - and least - around the world. [ABSTRACT FROM AUTHOR]

Rationale: Adenosine A2A receptors (A2AR) in the dorsal striatum have been implicated in goal-directed behaviour. While activation of these receptors with several methods has resulted in an insensitivity to outcome devaluation, particular explanations for how they disrupt behaviour have not been explored. We both confirm a role for A2A receptors in goal-directed responding and evaluate additional behavioural aspects of goal-directed control to more fully understand the role of A2A receptors in instrumental behaviour. Objectives: To examine the effects of the adenosine A2A agonist CGS-21680 in the DMS on response-outcome encoding, updating representations of outcome value and on the ability to inhibit behaviour when reward is not available. Methods: Male rats were trained to lever press for food reward. The A2AR agonist CGS-21680 was infused into the dorsomedial striatum either before an outcome devaluation test, prior to training with two distinct response-outcome associations or prior to a test of discriminative stimulus control over instrumental performance. Results: Intra-DMS administration of CGS-21680 impaired sensitivity to outcome devaluation. CGS-21680 treatment did not impair acquisition of specific response-outcome associations, selective control of responding based on the presence of stimuli that signaled when reward was or was not available, discrimination between stimuli or lever choices nor did it influence the effect of devaluation on the amounts of food eaten in a consumption test. Conclusions: CGS-21680 impairs the ability to modulate responding based on recent changes to outcome value, an effect that is not accounted for by impairments in behavioural inhibition, discrimination, encoding the specific outcome of a response or the effectiveness of specific satiety. [ABSTRACT FROM AUTHOR]

We studied competitive interactions of rats during instrumental foraging behavior. Two groups of animals were revealed: rats with predominance of operant actions for getting food reinforcements (donors) and kleptoparasites that more often get food after instrumental acts of the partners. Intergroup differences began to appear and increased from 3-4 paired experiments. It was revealed that at the individual stage of learning the instrumental skill, donor rats were faster in learning and showed high foraging activity with shorter latency in comparison with kleptoparasites, which were initially slower and performed a large number of inter-signal actions in the form of unconditioned peeking into the feeder. [ABSTRACT FROM AUTHOR]

During the past years scholars have shown an increasing interest in supporting students' self-regulated learning (SRL). Learning analytics (LA) can be applied in various ways to identify a learner's current state of self-regulation and support SRL processes. It is important to examine how LA has been used to identify the need for support in different phases of SRL cycle, which channels are used to mediate the intervention and how efficient and impactful the intervention is. This will help the learners to achieve the anticipated learning outcomes. The systematic literature review followed PRISMA 2020 statement to examine studies that applied LA interventions to enhance SRL. The search terms used for this research identified 753 papers in May 2021. Of these, 56 studies included the elements of LA, SRL, and intervention. The reviewed studies contained various LA interventions aimed at supporting SRL, but only 46% of them revealed a positive impact of an intervention on learning. Furthermore, only four studies reported positive effects for SRL and covered all three SRL phases (planning, performance, and reflection). Based on the findings of this literature review, the key recommendation is for all phases of SRL to be considered when planning interventions to support learning. In addition, more comparative research on this topic is needed to identify the most effective interventions and to provide further evidence on the effectiveness of interventions supporting SRL. [ABSTRACT FROM AUTHOR]

The current study investigated the effectiveness of a group on-line positive psychology intervention (OPPI) designed to mitigate the psychological impact of the COVID-19 pandemic and the subsequent measures to control it. Study participants (N = 82, Mage = 33.07, SD = 9.55) were all Greek adults divided into an intervention (n = 44) and a control group (n = 38). The intervention group attended a voluntary, online, two-week, six-session (each 50 min), group intervention. The intervention aimed at enhancing participants' personal strengths and resilience in order to cope more effectively with the psychological impact of social distancing (e.g., feelings of anxiety, sadness, fear, and/or loneliness). All participants completed an online questionnaire one week before the intervention's implementation, which included scales measuring their: demographic characteristics, empathy, resilience, affectivity, feelings of loneliness, depression and anxiety levels, and feelings of fear regarding the outbreak. Participants in both the intervention and control group completed the same measures the week following the intervention's termination to examine its effects, and two weeks later to examine its long-term effectiveness. The intervention was found to be effective in alleviating the impact of the pandemic and in strengthening participants' resilience. More specifically, the results showed significant decreases for the intervention group in all measures of psychosocial distress (anxiety, depression, loneliness and fear) and significant increases in empathy, resilience, and experience of positive emotions. The study's implications for the development and implementation of online psychological interventions during a crisis are discussed. [ABSTRACT FROM AUTHOR]

This systematic review assesses if positive psychology interventions (PPI) are more effective than other active psychological interventions for increasing the well-being of depressed adults. A review of randomised trials that compared PPI to other active interventions was conducted. A systematic search was undertaken using PsycInfo, PubMed, EMBASE, Web of Science, Scopus, CINAHL, two trial registries, and a manual search. The outcomes were happiness and depression. Ten studies, totalling 1341 participants, were included in the review. The small effect sizes for depression (Hedge's g = 0.15) and happiness (Hedge's g = 0.20) favoured PPI but were not significant, indicating no difference between PPI and other active interventions for the outcomes. Heterogeneity was high mainly due to differences in trial implementation. Risks of bias ranged from moderate to high. The results should be interpreted with caution because of the small number of included studies, high heterogeneity, and presence of bias. Protocol Registration Number PROSPERO CRD42019152513. [ABSTRACT FROM AUTHOR]

Rationale: During operant conditioning, animals associate actions with outcomes. However, patterns and rates of operant responding change over learning, which makes it difficult to distinguish changes in learning from general changes in performance or movement. Thus, understanding how task parameters influence movement execution is essential. Objectives: To understand how specific operant task parameters influenced the repetition of future operant responses, we investigated the ability of operant conditioning schedules and contingencies to promote reproducible bouts of five lever presses in mice. Methods: Mice were trained on one of the four operant tasks to test three distinct hypotheses: (1) whether a cue presented concurrently with sucrose delivery influenced the pattern of lever pressing; (2) whether requiring animals to collect earned sucrose promoted the organization of responses into bouts; and (3) whether only reinforcing bouts where interresponse time (IRT) variances were below a target promoted reproducible patterns of operant behavior. Results: (1) Signaling reinforcer delivery with a cue increased learning rates but resulted in mice pressing the lever in fast succession until the cue turned on, rather than executing discrete bouts. (2) Requiring mice to collect the reinforcer between bouts had little effect on behavior. (3) A training strategy that directly reinforced bouts with low variance IRTs was not more effective than a traditional fixed ratio schedule at promoting reproducible action execution. Conclusions: Together, our findings provide insights into the parameters of behavioral training that promote reproducible actions and that should be carefully selected when designing operant conditioning experiments. [ABSTRACT FROM AUTHOR]

Serial reversal-learning procedures are simple preparations that allow for a better understanding of how animals learn about environmental changes, including flexibly shifting responding to adapt to changing reinforcement contingencies. The present study examined serial reversal learning with humans by arranging both midsession and variable contingency reversals across two experiments. We also examined the effects of extinction by adding nonreinforced trials at the end of later sessions and provided the first evaluation of effects of win-stay/lose-shift versus counting strategies on accuracy and response latency of humans' reversal-learning performance. In each experiment, responding tracked contingency reversals, primarily with participants using either win-stay/lose-shift or counting strategies. Introducing variable reversal points in the second experiment resulted in near-exclusive win-stay/lose-shift responding among participants and eliminated counting of trials. Each experiment also revealed an immediate shift from S2 to S1 after experiencing extinction during the initial test trial, indicating resurgence of the initial response through a win-stay/lose-shift response pattern. Therefore, the present study replicates and extends prior findings of a win-stay/lose shift response pattern in situations of greater uncertainty. These findings suggest that differences in environmental certainty induce qualitatively different decision-making strategies. [ABSTRACT FROM AUTHOR]

Recent police brutality and related violence against Black people, coupled with the COVID-19 pandemic, has further evidenced the disproportionate impact of systemic racism in our institutions and across society. In the United States, the alarming mortality rates for Black people due to police violence and COVID-19 related deaths are clear demonstrations of inequities within a long history of disparate outcomes. In understanding systemic racism, it is essential to consider how it is embedded within society and across socio-ecological levels. The Social-Ecological Model (SEM) is used to examine conditions within the environment that maintain systemic racism, including within our field and discipline. A behavioral-community approach for examining racism aids in determining points of intervention across multiple ecological levels that may contribute to behavior change, including with behaviorists. The science of behavior is well-suited to help examine the contingencies governing behaviors within and across systems, which is pivotal for addressing operant behaviors to influence long-term behavior change. This paper calls on the behavioral community to address systemic racism within our environments and systems of influence to contribute to a more equitable community. Systemic racism, including within the context of anti-Blackness, is examined by considering behavior change strategies that can be supported by behaviorists across socio-ecological levels. Tools for collaborative action are provided to support behaviorists in demonstrating the skills needed across a continuum of behaviors from allyship to anti-racism to actively address systemic racism. [ABSTRACT FROM AUTHOR]

Mode of administration (i.e., active vs passive) could influence the modulatory action that drugs of abuse exert on memory consolidation. Similarly, drug conditioned stimuli modulate memory consolidation and, therefore, acquisition and extinction of this conditioned response could also be influenced by mode of drug administration. Exploring these questions in male Sprague–Dawley rats, Study 1 assessed memory modulation by post-training 0, 0.3 and 1 mg/kg heroin injected subcutaneously in operant chambers (i.e., drug conditioned context). Study 2 asked a similar question but in rats trained to self-administer 0.05 mg/kg/infusion heroin intravenously, as well as in rats that received identical amounts of intravenous heroin but passively, using a yoked design. The period of heroin exposure was followed by repeated drug-free confinement in the conditioned context, and by sessions during which responses on the active lever had no scheduled consequences. Study 2 also included a cue-induced reinstatement session during which lever responses reactivated a light cue previously paired with intravenous heroin infusions. The post-training effects of injected/self-administered/yoked heroin, extinction and reinstatement sessions on memory consolidation were tested using the object location memory task. It was found that post-sample heroin enhanced memory in injected and yoked, but not self-administering, rats. However, post-sample exposure to the heroin cues (i.e., context or/and light cue) modulated memory equally in all groups. Taken together, these data support the conclusion that mode of administration impacts the cognitive consequences of exposure to drugs but not of environmental stimuli linked to their reinforcing effects. [ABSTRACT FROM AUTHOR]

Maternal nutritional programming by energy-dense foods leads to the transgenerational heritance of addiction-like behavior. Exposure to energy-dense foods also activates systemic and central inflammation in the offspring. This study aimed to characterize pro- and anti-inflammatory cytokine profiles in blood and their correlation to the transgenerational heritance of the addiction-like behavior in rats. F1 offspring of male Wistar diagnosed with addiction-like behavior were mated with virgin females to generate the F2 and the F3 offspring, respectively. Diagnosis of addiction-like behavior was performed by the operant training schedule (FR1, FR5 and PR) and pro- and anti-inflammatory cytokine profiles in blood were measured by multiplex platform. Multiple linear models between behavior, fetal programming by diet and pro- and anti-inflammatory cytokine profiles were performed. We found that the addiction-like behavior found in the F1 male offspring exposed to energy-dense food (cafeteria, CAF) diet during fetal programing is transgenerational inherited to the F2 and F3 generations. Blood from addiction-like behavior subjects of F2 and F3 generations exposed to CAF diet during maternal programming showed decrease in the anti-inflammatory IL-10 in the plasma. Conversely, decreased levels of the pro-inflammatory MCP-1 was identified in non-addiction-like subjects. No changes were found in plasmatic TNF-α levels in the F2 and F3 offspring of non-addiction-like and addiction-like subjects. Finally, biological modeling between IL-10 or MCP-1 plasma levels and prenatal diet exposure on operant training responses confirmed an association of decreased IL-10 levels on addiction-like behavior in the F2 and F3 generations. Globally, we identified decreased anti-inflammatory IL-10 cytokine in the blood of F2 and F3 offspring subjects diagnosed with addiction-like behavior for food rewards. [ABSTRACT FROM AUTHOR]

The odor span task (OST) is frequently used to assess memory capacity in rodents. Odor stimuli are presented in a large arena and choices of session-novel odors produce food reward. The procedure can be described as an incrementing non-matching-to-sample contingency because on each trial one new stimulus is presented along with one or more previously presented (non-reinforced) comparison odors. An automated version of this task has recently been developed in which odors are presented with an olfactometer in an operant chamber using a successive conditional discrimination procedure. The present study compared the acquisition of matching- vs. non-matching-to-sample versions of the task with six rats tested under each procedure. All six rats trained on the non-matching variation showed rapid acquisition of the discrimination with high rates of responding to odor stimuli when they were session-novel and low rates of responding to subsequent presentations of those odors. However, only three of the six rats trained on the matching variation met acquisition criteria, and two of the three that did acquire the task required extensive training to do so. These results support findings from the OST that rats can differentiate between stimuli that are session-novel and those previously encountered, but also that a matching contingency is more difficult to learn than a non-matching arrangement. These findings parallel differences observed between acquisition of simple matching- and non-matching-to-sample tasks, but accounts such as novelty preference or the oddity preference effect may not be sufficient to explain the present results. [ABSTRACT FROM AUTHOR]

Laboratory models of renewal are critical for understanding this form of behavioral relapse and informing clinical practice to reduce the occurrence of relapse and facilitate the maintenance of treatment gains. Nonsequential renewal is a modified procedure developed by (Sullivan et al. Journal of the Experimental Analysis of Behavior, 110(1), 74–86 2018) that provides an arrangement to study operant renewal in a manner more consistent with clients receiving clinical services, which involves exposing subjects to treatment and baseline conditions across two or more contexts. Experiment 1 replicated the procedure of (Craig et al. Journal of the Experimental Analysis of Behavior, 112(2), 210–223 2019) to compare ABA renewal of target responding in rats exposed to the nonsequential or sequential renewal procedure. Experiment 2 investigated the use of an olfactory extinction cue in mitigating renewal. In Experiment 1, the Nonsequential Group displayed a greater magnitude of renewal compared to the Sequential Group, consistent with the findings from (Craig et al. Journal of the Experimental Analysis of Behavior, 110(1), 74–86 2019) but inconsistent with those from (Sullivan et al. Journal of the Experimental Analysis of Behavior, 110(1), 74–86 2018) with human participants. The extinction cue did not mitigate renewal in Experiment 2. The use of a laboratory model of renewal that is more analogous to clinical settings may be valuable in a translational approach to investigating relapse-prevention techniques. [ABSTRACT FROM AUTHOR]

In recent years, various intervention programs have been developed to enhance the quality of life of young athletes. This is particularly important for those who live in residences of professional clubs, far from their families. In this regard, we designed a positive psychology intervention program called "DÉPORVIDA", aimed at enhancing character strengths. To assess the efficacy of this 8-week intervention, we tested 28 young soccer players from a Spanish professional club. The intervention program used a strength-based approach from the values in action (VIA) model, and was conducted by club employees with formal academic education. Data were analysed using a set of 2 × 2 (intervention × time) mixed design ANOVAs. Results revealed different trends for the intervention and the control groups participants for seasonal performance satisfaction and percentage of time feeling happy/unhappy, highlighting consistent changes in the desired direction. Overall, the results indicate that the DÉPORVIDA program is a useful tool to promote positive development in young athletes. [ABSTRACT FROM AUTHOR]

Dopamine has been implicated in the reinforcing effects of smoking. However, there remains a need for a better understanding of the effects of dopamine D1-like receptor agonists on nicotine intake and the role of sex differences in the effects of dopaminergic drugs on behavior. This work studied the effects of D1-like receptor stimulation and blockade on operant responding for nicotine and food and locomotor activity in male and female rats. The effects of the D1-like receptor antagonist SCH 23390 (0.003, 0.01, 0.03 mg/kg) and the D1-like receptor agonist A77636 (0.1, 0.3, 1 mg/kg) on responding for nicotine and food, and locomotor activity were investigated. The effects of SCH 23390 were investigated 15 min and 24 h after treatment, and the effects of the long-acting drug A77636 were investigated 15 min, 24 h, and 48 h after treatment. Operant responding for nicotine and food and locomotor activity were decreased immediately after treatment with SCH 23390. Treatment with SCH 23390 did not have any long-term effects. Operant responding for nicotine was still decreased 48 h after treatment with A77636, and food responding was decreased up to 24 h after treatment. Treatment with A77636 only decreased locomotor activity at the 48 h time point. There were no sex differences in the effects of SCH 23390 or A77636. In conclusion, the D1-like receptor antagonist SCH 23390 reduces nicotine intake and causes sedation in rats. Stimulation of D1-like receptors with A77636 decreases nicotine intake at time points that the drug does not cause sedation. [ABSTRACT FROM AUTHOR]

Research indicates that brief 2-min positive psychology interventions (PPIs) increase well-being during COVID-19 lockdowns. The present study extended this to assess the effectiveness over two-weeks. Participants (n = 150) were randomly allocated to one of three PPIs; nostalgia, gratitude, best possible self (BPS), or control. The interventions were slightly adapted for the lockdown and were completed three times, every seven days over two-weeks. Well-being measures were completed immediately after the first intervention (T1), after the next two interventions (T2−T3) and at one-week follow-up (T4) (but no baseline measure of well-being was taken). At T1, participants in the nostalgia, gratitude, and BPS intervention had higher self-esteem than those in the control intervention. At T1 and T2, participants in the gratitude and BPS intervention reported higher social connectedness than participants in the nostalgia and control intervention. Then at follow-up (T4), participants in the nostalgia, gratitude, and BPS intervention had lower fear of COVID-19 than those in the control intervention. Overall, the results show the benefits of nostalgia, gratitude and optimism, compared to the control, during lockdown. [ABSTRACT FROM AUTHOR]

The Price equation is a mathematical expression of selectionist and non-selectionist pressures on biological, cultural, and behavioral change. We use it here to specify instrumental and noninstrumental behaviors as they arise within the context of the Pavlovian autoshaping procedure, for rats trained under reward certainty and reward uncertainty. The point of departure for this endeavor is that some portion of autoshaped behavior referred to as goal-tracking appears instrumental—a function of resource attainment (the individual approaches the location where the unconditioned stimulus is to be delivered). By contrast, some other portion of autoshaped behavior referred to as sign-tracking is noninstrumental—irrelevant to making contact with the to-be-delivered unconditioned stimulus. A Price equation model is proposed that unifies our understanding of Pavlovian autoshaping behavior by isolating operant and respondent influences on goal-tracking (instrumental) and sign-tracking (noninstrumental) behavior. [ABSTRACT FROM AUTHOR]

Rationale: Alongside a pathological, excessive, motivation for substances of abuse, substance use disorder (SUD) patients often show a dramatic loss of interest for naturally rewarding activities, such as positive peer social interaction and food intake. Yet, pre-clinical evidence of the latter SUD features remains scarce and inconsistent. Objectives: In the current study, we investigated the effect of non-rewarding and rewarding doses of morphine upon social behaviour, motivation for and intake of palatable food, in male and female C57BL/6J mice. Methods: First, the rewarding effects of two relatively low morphine doses (1.25 and 2.5 mg/kg) were assessed using a newly established single substance administration/conditioning trial conditioned place preference (CPP) paradigm. Then, morphine (1.25 and 2.5 mg/kg) effects upon social behaviour, motivation for and intake of palatable food were examined by the three-chamber (3-CH), an operant behaviour and a palatable food preference test, respectively. Results: Morphine (2.5 mg/kg) induced CPP in both male and female mice, whereas morphine (1.25 mg/kg) induced CPP only in female mice. Both morphine doses (1.25 and 2.5 mg/kg) reduced sociability, motivation for and intake of palatable food in male and female mice, independently of cognitive function or locomotor activity. Conclusions: Female mice were more sensitive than male mice to the rewarding effects of morphine. Moreover, both a non-rewarding and a rewarding dose of morphine impaired the interest for naturally rewarding activities, indicating that brain reward systems might be more sensitive to the deleterious than to the rewarding effects of substances of abuse. [ABSTRACT FROM AUTHOR]

What are the differences between optimists and pessimists? The aim of this study is to analyze the differences reported by optimists and pessimists in terms of three psychological variables: emotional intelligence (EI), happiness, and life satisfaction. To answer this question, we examined the extent to which a combination of different levels of optimism and pessimism can differently predict EI, happiness, and life satisfaction in two independent samples (891 adults, 494 adolescents). To do that, we introduced a person-centered approach, which offers several advantages in the study of optimism over the extended, predominant variable-centered approach. Then, using a latent profile analysis, we identified three groups of individuals with a similar optimism–pessimism configuration: optimists, ambivalents, and pessimists. The results obtained supported our hypothesis that optimists report higher EI, happiness, and life satisfaction levels than those reported by pessimists. Low levels of optimism, rather than high levels of pessimism, distinguish optimistic from non-optimistic people in the prediction of external outcomes. Our results suggest that optimism and pessimism can be viewed as separate yet correlated traits that can be grouped together to explain individual affective and cognitive differences, which encourage the refinement of strategies and interventions used in psychology practice. [ABSTRACT FROM AUTHOR]

The study aimed to examine the effectiveness of a multicomponent positive psychology program for adolescents with moderate levels of anxiety symptoms in Hong Kong, China. The program combined elements and techniques of gratitude and emotional intelligence intervention delivered in the group format. Adopting a two-armed randomized controlled trial research design, a total of 92 secondary school students who scored 9–11 in the Chinese Hospital Anxiety and Depression scale, were randomly assigned to the intervention and control groups. After the seven-session program, participants of the intervention groups showed a significant decrease in anxiety and significant increase in subjective happiness. Furthermore, the two active components of this program, gratitude and emotional intelligence, mediated the relationship between the intervention and the change in subjective happiness. In addition, emotional intelligence mediated the effect of the intervention on the change in anxiety symptoms. Findings of this study shed light on the applicability and efficacy of multicomponent positive psychology programs in alleviating anxiety and enhancing subjective happiness of adolescents. Future research is called for to advance our understanding of multicomponent positive psychology programs across different types of active components, samples, and conditions. [ABSTRACT FROM AUTHOR]

The concept of metacontingency describes a contingent relation between the coordination of two or more individual's behavior and a selecting consequence. The concept provides several insightful avenues for experimental investigation of social behavior and behavior of people in groups. The present study explores the question of whether operant behavior of individuals and coordinated behavior of multiple individuals can be distinguished as two different conditionable units of analysis. We used rates of individual responding maintained by ratio or interval schedules of reinforcement as a baseline to evaluate the effect of consequences contingent on coordinated behavior of 27 participants in groups of three. Coordination demanded temporal spacing between responses of three participants superimposed on the variable interval or variable ratio individual reinforcement schedules. The results showed that contingency on coordinated behaviors resulted in an increased rate of coordination along with a decreased rate of responding to individual schedules. Interresponse times (IRTs) from all participants were sensitive to the coordination contingency. We discuss the need to distinguish units of analysis that describe individual behavior and units describing coordinated behavior, although these units may occur simultaneously. [ABSTRACT FROM AUTHOR]

Social stress is a widely experienced problem in the contemporary world; it is diverse and is determined by specific living conditions in both humans and animals. Isolation stress and crowding stress are chronic states which are actively and effectively modeled in rodents. The aim of the present work was to study the influences of these types of social stress in rats on the rate of learning to complete an operant food-procuring behavior alone and in cooperation with a conspecific. Blood corticosterone and ACTH levels were measured to assess the state of the stress-mediating hypothalamo-hypophyseal-adrenocortical system (HHACS); neurotrophins and proinflammatory cytokines were also estimated. Isolation stress, in contrast to crowding, decreased learning effectiveness – formation of a new skill – in both individual and cooperative behavior. No increases in HHACS functioning were seen in stressed animals of either group. Furthermore, animals in crowded conditions showed significant reductions in corticosterone and increases in the proinflammatory cytokine IL-1β. These results suggest that the mechanisms of action of chronic isolation and crowding stress are different both at the level of the stress-mediating system of the body and at the level of their influences on integrative brain activity. [ABSTRACT FROM AUTHOR]

Rationale : In human beings and experimental animals, maladaptive impulsivity is manifested by the acute injection of psychostimulants, such as amphetamine. Cannabinoid CB1 receptors have been implicated in the regulation of stimulant-induced impulsive action, but the role of CB1 receptors in timing-related impulsive action by amphetamine remains unknown. Methods: Male rats were used in evaluating the effects of CB1 receptor antagonist and agonist (SR141716A and WIN55,212–2, respectively) systemically administered individually and combined with d-amphetamine on a differential reinforcement of low-rate response (DRL) task, an operant behavioral test of timing and behavioral inhibition characterized as a type of timing impulsive action. Results: A distinct pattern of DRL behavioral changes was produced by acute d-amphetamine (0, 0.5, 1.0, and 1.5 mg/kg) treatment in a dose-dependent fashion, whereas no significant dose effect was detected for acute SR141716A (0, 0.3, 1, and 3 mg/kg) or WIN55,212–2 (0, 0.5, 1, and 2 mg/kg) treatment. Furthermore, DRL behavior altered by 1.5 mg/kg d-amphetamine was reversed by a noneffective dose of SR141716A (3 mg/kg) pretreatment. The minimally influenced DRL behavior by 0.5 mg/kg d-amphetamine was affected by pretreatment with a noneffective dose of WIN55,212–2 (1 mg/kg). Conclusion: These findings reveal that the activation and blockade of CB1 receptors can differentially modulate the timing impulsive action of DRL behavior induced by acute amphetamine treatment. Characterizing how CB1 receptors modulate impulsive behavior will deepen our understanding of the cannabinoid psychopharmacology of impulsivity and may be helpful in developing an optimal pharmacotherapy for reducing maladaptive impulsivity in patients with some psychiatric disorders. [ABSTRACT FROM AUTHOR]

This study is a metrological investigation of eight superconducting gravimeters that have operated in the Strasbourg gravimetric Observatory. These superconducting gravimeters include an older compact C026 model, a new observatory type iOSG23 and six iGravs (6, 15, 29, 30, 31, 32). We first compare the amplitude calibration of the meters using measurements from FG5 #206 absolute gravimeter (AG). In a next step we compute the amplitude calibration of all the meters by time regression with respect to iOSG23 itself carefully calibrated by numerous AG experiments. The relative calibration values are much more precise than absolute calibration for each instrument and strongly reduce any tidal residual signal. We also compare the time lags of the various instruments with respect to iOSG23, either by time cross-correlation or tidal analysis for the longest records (about 1 year). The instrumental drift behavior of the iGravs and iOSG23 is then investigated and we examine the relationships observed between gravity and body temperature measurements. Finally, we compare the noise levels of all the instruments. A three-channel correlation analysis is used to separate the incoherent (instrumental) noise from the coherent (ambient) noise. The self-noise is then compared to a model of thermal noise (Brownian motion) using the known instrumental parameters of the damped harmonic oscillator. The self-noise of iGrav instruments is well-explained by the thermal noise model at seismic frequencies (between 10–3 and 10–2 Hz). As expected, the self-noise of iOSG23 with a heavier sphere is also lower than that of iGravs at such frequencies. [ABSTRACT FROM AUTHOR]

Recovery-from-extinction effects in which a conditioned response returns after extinction have been shown in mammals, birds and fish. Thus, these effects appear to be conserved among vertebrates; however, they have yet to be investigated in amphibians. Using prey catching conditioning in the fire-bellied toad (Bombina orientalis), we tested if renewal and reinstatement occurred after extinction when subjects were respectively re-exposed to the context or reinforcer used during conditioning. For renewal, a different context was used during extinction and thus renewal tests assessed if external contextual cues associated during conditioning stimulated prey catching performance. For reinstatement, the reinforcer withheld during extinction was simply delivered again prior to a test assessing if internal cues associated with recent prey consumption stimulated prey catching performance. Conditioning followed a fixed ratio 5 schedule of reinforcement, where five attempts to capture a cricket stimulus displayed on a computer screen were reinforced by delivery of a single live cricket. Performance was measured as the time to reach five prey catching attempts. A significant improvement in prey catching performance during conditioning followed by deterioration with extinction was seen in the experiments. Upon return to the context used for conditioning after extinction, toads showed a renewal effect whereby they displayed faster performance during testing compared to the end of extinction. Conversely, toads showed no reinstatement effect because pre-feeding of a cricket did not influence performance during the test that followed extinction. Reinstatement could have been lost in amphibian phylogeny due to secondary simplification of the nervous system. [ABSTRACT FROM AUTHOR]

Improving mental wellbeing has a range of benefits for society, including increased productivity, longevity, and resiliency. However, interventions designed to improve mental wellbeing are often only compared to waitlist controls, leaving uncertainty regarding the mechanisms of their effectiveness. The current study in 326 participants assessed a six-week positive psychology intervention against an active control (n = 163) in an online randomized control trial. Outcome measures included life satisfaction, wellbeing (subjective and psychological wellbeing), stress, depression and anxiety symptoms, and self-compassion. The potential moderating effect of participating during the ongoing COVID-19 pandemic was also explored. The intervention group showed greater improvements in life satisfaction by week six (β = 0.18, p =.014) and were maintained through to 7 weeks post-baseline (β = 0.23, t = 3.07, p =.002) and remained significant when accounting for COVID-19 restrictions. An improvement in composite wellbeing from baseline to 7 weeks post-baseline was detected when accounting for COVID-19 restrictions. Composite wellbeing and total depression and anxiety symptoms improved significantly more in the intervention group for participants with low baseline resiliency resources. These findings support the efficacy of using online multi-component positive psychology interventions in boosting wellbeing and reducing distress symptoms particularly in individuals with fewer resiliency resources who may need added support. [ABSTRACT FROM AUTHOR]