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The effectiveness of mutual help groups (MHGs) in promoting addiction recovery has been widely acknowledged. However, the psychological mechanisms underlying the impact of MHGs remain somewhat uncertain. Drawing on a social identity perspective, this study investigated a sequential mediation model in which social support is posited as a driving factor that enhances abstinence maintenance through group identification, recovery identity, and self-efficacy. A sample of 820 smokers, participating in a 6-month collective smoking cessation programme which included access to an online help group, completed measures of social support, group identification, smoker/ex-smoker identity, and self-efficacy at the programme's outset. Smoking abstinence was assessed 6 and 9 months later. The findings supported the proposed model, indicating that social support was positively associated with MHG identification, which, in turn, was related to a stronger recovery identity. Subsequently, recovery identity was associated with increased self-efficacy, and indirectly, with smoking abstinence at both measurement times. Additional analyses testing alternative mediation models further supported the validity of the proposed model. These findings suggest that social identity factors play significant roles in accounting for the effectiveness of MHGs for addiction recovery., (© 2024 The Author(s). British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Although there have been numerous studies on the relations between group identification and ethnic prejudice, it is less clear whether their associations reflect stable individual tendencies or rather situational or temporal fluctuations. This longitudinal multilevel study aimed to fill this gap by examining the between- and within-person associations of identification with the national and superordinate human groups and levels of prejudice against multiple ethnic minorities. A total of 883 Italian majority adolescents (M age  = 15.66, SD = 1.15 at T1, 49.7% females) completed questionnaires at four time points over the course of 1 year. Results showed that national identification was related to more prejudice at the between-person level but to decreases in prejudice at the within-person level. Additionally, human identification contributed to lower levels of and steeper decreases in prejudice at both the between- and within-person levels. Common and unique associations also emerged across different ethnic minority targets, but only for between-person effects. Overall, this study highlights the importance of distinguishing stable individual levels and momentary fluctuations of both ingroup identifications and ethnic prejudice in order to orient future interventions aimed at improving the quality of intergroup relationships., (© 2024 The Author(s). British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

This paper discusses the importance of a social identity approach to crisis leadership in the context of global crises such as the Covid-19 pandemic and emphasizes the interconnected relationships between leaders and followers. I highlight the role of leaders in fostering unity and shaping citizens' responses especially during crises. I discuss the nature of crises and the significant role of political leaders in guiding societal responses and suggest that crisis leadership extends beyond individual competencies and behaviours and involves a shift from individual to collective responses. With this, I introduce the social identity approach to leadership that views leadership as a social influence process and emphasizes the importance of creating a sense of 'we-ness' among followers. Following from that, crisis leadership involves leaders constructing defining features of collective identity and efficacy to address crises appropriately. However, the value of this approach depends on the careful definition of shared identity boundaries, consideration of diverse experiences within society, the evolving nature of crisis leadership over time and potential consequences of crisis leadership. The sustainability of identity leadership, the dynamics of intergroup and subgroup processes, and the complexities of various crises are identified as areas requiring further research., (© 2024 The Author(s). British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Leptin (LEP) is a cytokine-like hormone proven to be involved in diverse biological processes. In livestock, it regulates feed intake, BW homeostasis, and energy balance, among other traits. Natural nonsynonymous genetic polymorphisms in the ovine leptin (oLEP) alter the biochemical and physiological characteristics of its gene products. Here we studied in vitro and in vivo the biochemical and physiological characteristics of recombinant hormones representing the oLEP and bovine leptin (bLEP) reference sequences of wild-type (WT) leptins (GenBank accession No. U84247 and U50365, respectively), oLEP and bLEP recombinant muteins carrying the R4C mutation, and oLEP recombinant hormones carrying the A59V and Q62R mutations, which were detected in bLEP. All proteins were purified to homogeneity as monomers and formed 1:1 molar ratio complexes with the chicken leptin-binding domain (LBD). Surface plasmon resonance experiments revealed that all protein variants exhibit reduced (P < 0.05) affinity to chicken (ch) and human (h) LBD compared with the WT oLEP and bLEP recombinant proteins. The ovine and bovine R4C muteins exhibited significantly (P < 0.05) greater induction of cell proliferation in a Baf/3 cell line bioassay, despite lower affinity toward both hLBD and chLBD. Intra-third cerebral ventricle infusion of oLEP and its 3 muteins in sheep resulted in reduced feed intake. However, the 3 tested muteins had a decreased (P < 0.05) inhibitory effect than the WT LEP. It was concluded that natural genetic polymorphisms in the bLEP are associated with variation in the biochemical and physiological properties of the protein. [ABSTRACT FROM AUTHOR]

Exposure to low levels of lead in children can cause cognitive deficits (reduced IQ) and behavioral changes such as reduced attention span and increased antisocial behavior. There are no mandatory limits on lead in paint in Israel, with the exception of paints used on toys and children's furniture. However, paints in playgrounds and public areas may be a source of exposure to lead in young children. In this study, we quantified lead concentrations in painted surfaces in public playgrounds and public areas, and in spray paints in Israel, using X-ray fluorescence (XRF). Lead was detected in 43/48 (90%) of surfaces; concentrations exceeded the US regulatory limit for lead in paint (90 ppm) in 4/5 (80%) of tested surfaces on wooden picnic tables and benches, and 22/25 (88%) of surfaces in playgrounds. In 15 surfaces, lead concentrations were 10-700 times higher than the US limit. Out of 11 spray paints sampled, three (27%) had concentrations above the US standard for residential paints. In order to prevent exposure of the general public to lead in playgrounds and public areas and in spray paints, we recommend an integrated approach, including regulatory restrictions (mandatory lead limit of 90 ppm in all paints except labeled industrial paints); awareness raising in the public and in national agencies and local authorities responsible for maintenance in playgrounds, schools and public areas; and encouragement of voluntary measures by industry to prevent sale of industrial paints for use in areas accessible to the public., (Copyright © 2018 Elsevier B.V. All rights reserved.)

Toys and children's products may contain trace metals and organic compounds that are potentially harmful to the health and development of infants and young children. Intergovernmental organizations and individual countries regulate chemicals in consumer products, but a coordinated international approach is lacking. This paper examines the implications of chemical regulation in children's products in large markets for a smaller market, namely Israel. We compared chemical regulations in children's products in the U.S., EU and Israel, and conducted in-depth interviews with diverse stakeholders in the Israeli product standardization process. Israel adopted EU chemical standards for certain chemicals (e.g., trace metals, phthalates) but not others (e.g., bisphenol A, flame retardants, trace metals in children's jewelry). Israeli regulation of chemicals in consumer products relies on regulations in large markets such as the U.S. and EU, which therefore have impacts beyond their territories. However, Israel adopts only product-specific standards and has regulatory gaps due to the lack of an overarching regulatory approach that exists in the U.S. and the EU. Furthermore, Israeli policy is to adopt parallel standards from large markets in order to remove trade barriers, despite their different approaches to chemical regulation, an approach which prioritizes trade considerations over health considerations. We conclude with policy recommendations for Israel, which have relevance for other small markets., (Copyright © 2017 Elsevier B.V. All rights reserved.)

Brokerage in intra-organizational networks is critical to performance, but women exhibit less brokerage in their social networks and receive lower performance returns to the brokerage they exhibit than men do. We uncover a condition under which the gender gaps in network advantage are entirely negated: mobility. When women move between units of the organization, they increase their brokerage more than mobile men do. Further, such mobility eliminates the gender gap in returns to brokerage. Using a rich dataset including the personnel records, monthly performance, and email communications of thousands of employees in a large financial institution, we find support for our arguments by comparing the networks and objective performance of those who changed jobs with matched non-movers prior to and following each job change. In probing why this might be the case, we find that women movers are more likely to maintain communication ties to colleagues from their previous roles and that these persistent ties give them a discernible and gender-role-congruent explanation for connecting otherwise disconnected units and benefiting from network brokerage. Our results illuminate important mechanisms by which social network dynamics and mobility affect gender inequality and performance in organizations. [ABSTRACT FROM AUTHOR]

Experimental and survey research shows that a common group membership can result in increased levels of social support. Here we complement such research with qualitative data concerning the forms and function of such support. Specifically, we explore the mutual support reported by pilgrims undertaking the Hajj. This requires participants enact a series of identity-related beliefs and values (including specific rituals) in conditions that are practically and psychologically challenging. Using data obtained through semi-structured interviews (N = 33), we investigate how participants' shared identity facilitated their behavioural enactment of these identity-defining beliefs and values. We focus on how their shared understanding of their beliefs and values as Hajj pilgrims allowed various forms of support (psychological, material, informational, and behavioural) which helped participants translate their identity-related ideals into behaviour. Our analysis implies that a shared identity provides a frame of reference with which group members can recognize each other's identity-related concerns and what they need in order to enact their identity. In turn, it implies that in situations where there are practical and psychological constraints on behaviour, action in terms of one's social identity can be conceptualized as a joint accomplishment in which the mutual support of group members is key., (© 2024 The Author(s). British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Building on the seminal studies of Solomon Asch and Muzafer Sherif, recent research has advanced our understanding of the mechanisms underlying social influence by applying a diffusion model analysis. Here, we combined the social identity approach to social influence with a diffusion model analysis to unravel the mechanisms underlying social influence. In particular, we aimed to disentangle whether the difference between in-group and out-group influence on perceptual decision-making is driven by a judgmental bias (i.e., changes in decision criteria) or a perceptual bias (i.e., changes in the uptake of sensory information). Preregistered analyses indicated that in-groups exerted stronger social influence than out-groups because in-groups induced a stronger perceptual bias than out-groups. This finding is in line with the single process assumption of the social identity approach because it implicates that the single process driving social influence (i.e., self-categorisation) translates into a change in a single subprocess of decision-making (i.e., biased information uptake). In conclusion, our results highlight that our theoretical understanding of social influence can be expanded by integrating the social identity approach with a diffusion model analysis., (© 2024 The Authors. British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Identity fusion is a visceral feeling of oneness with a group, known to strongly motivate extreme pro-group behaviour. However, the evidence on its causes is currently limited, primarily due to the prevalence of cross-sectional research. To address this gap, this study analysed the evolution of fusion in response to a massive collective ritual, Korrika-a race in support of the Basque language-, over three time periods: before (n = 748) and immediately following participation (n = 402), and 7 weeks thereafter (n = 273). Furthermore, we explored the potential mediating roles of two key factors: perceived emotional synchrony, a sense of emotional unity among participants that emerges during collective rituals, and kama muta (moved by love), an unexplored emotion in relation to fusion, which arises from feelings of shared essence. The proportion of fused participants increased significantly after participation and remained stable for at least 7 weeks. Perceived emotional synchrony and kama muta apparently explained the effect of participants' behavioural involvement in the ritual on subsequent fusion, but only among those who were not previously fused with Korrika participants. We conclude that emotional processes during collective rituals play a fundamental role in the construction of identity fusion., (© 2024 The Authors. British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

This paper critically examines the normative versus non-normative distinction commonly used in collective action research. To explore the similarities and differences between antecedents of normative versus non-normative actions, we conducted a systematic review on diverse predictors of non-normative, radical and violent collective actions. We examined 37 social and political psychology studies published after 2010 and identified five recurring themes: identity, efficacy, injustice, emotions and norms. Findings exhibited significant overlaps with those predictors associated with normative collective action. Thus, a reconceptualization is needed to undermine the rigid boundaries between these action types, highlighting the intricate interplay of factors that transcend the conventional binary. Aiming to avoid conceptual ambiguity and challenge the perspective that associating particular collective actions with unwarranted violence using social norms as fixed and a priori, we propose the term 'confrontational collective action' to separate out form of action from societal approval. Through this reconceptualization, we discussed the main limitations in the literature, focusing on how studies approach normativity and efficacy and addressing the issue of decontextualization in the literature. This paper calls for a contextually informed understanding of confrontational collective action that recognizes what is seen as 'normative' can change over time through intra- and intergroup interactions., (© 2024 The Authors. British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Awe is a profound, self-transcendent emotion. To illuminate its origin, four preregistered studies examined how U.S. 4- to 9-year-old children perceive awe-inspiring stimuli (N = 444, 55% female, 58% White, tested in 2020-2023). Awe-inspiring expansive nature (Study 1) and natural disaster scenes (Study 2) evoked perceived vastness, motivation to explore, and awareness of the unknown more than everyday scenes did (d ranging 0.32-1.76). Compared to expansive social stimuli, expansive nature stimuli more positively affected children's sense of self (Study 3). Diverse awe-inspiring scenes (vast nature, natural disasters, and slow-motion objects) all elicited awe and higher learning motivation than everyday scenes did (Study 4). These findings suggest that children appreciate awe-inspiring visual experiences, illuminating the origins and nature of awe as a self-transcendent experience., (© 2024 The Authors. Child Development published by Wiley Periodicals LLC on behalf of Society for Research in Child Development.)

Trace metals and synthetic chemicals including phthalates, bisphenol A and flame retardants, are widely used in toys and childcare products, and may pose acute or chronic adverse health effects in children. In Israel, certain chemicals are regulated in childcare products, but there are still regulatory gaps. We tested regulated and unregulated contaminants in 174 item parts from 70 childcare items with potentially high oral or dermal exposure, including 22 children's jewelry items, 14 toys, 7 diaper-changing mats, 6 baby mattresses, 7 baby textiles and 14 feeding and bathing items. In children's jewelry, an unregulated product in Israel, 23% of samples exceeded the US standard for lead. In toys, a regulated product, we did not detect trace metals above the Israeli standard. In textiles, baby mattresses and diaper-changing mats, phthalates exceeded the European Union standard in 14-45% of tests with a mean of 6.74% by mass for diisononyl phthalate, and 1.32% by mass for di(2-ethylhexyl) phthalate. BPA migration exceeded the EU standard in 14-45% of tests with a mean of 1.03 ppm. The flame retardants polybrominated biphenyls, pentabromodiphenyl, octabromodiphenyl ether, tris(2,3-dibromopropyl) phosphate and tris-(aziridinyl)-phosphine oxide were not detected. For products regulated in Israel, our findings suggest general compliance with mandatory standards. However, a lack of comprehensive chemical regulation means that there are regulatory gaps, and products not regulated in Israel may contain high levels of chemical contamination, exceeding US or EU regulations. The results of this study have prompted the development of an Israeli safety standard for children's jewelry., (Copyright © 2017 Elsevier Ltd. All rights reserved.)

Objectives: Acute pancreatitis has a highly variable course. Currently there is no widely accepted method to measure disease activity in patients hospitalized for acute pancreatitis. We aimed to develop a clinical activity index that incorporates routine clinical parameters to assist in the measurement, study, and management of acute pancreatitis., Methods: We used the UCLA/RAND appropriateness method to identify items for inclusion in the disease activity instrument. We conducted a systematic literature review followed by two sets of iterative modified Delphi meetings including a panel of international experts between November 2014 and November 2015. The final instrument was then applied to patient data obtained from five separate study cohorts across Southern California to assess profiles of disease activity., Results: From a list of 35 items comprising 6 domains, we identified 5 parameters for inclusion in the final weighted clinical activity scoring system: organ failure, systemic inflammatory response syndrome, abdominal pain, requirement for opiates and ability to tolerate oral intake. We applied the weighted scoring system across the 5 study cohorts comprising 3,123 patients. We identified several distinct patterns of disease activity: (i) overall there was an elevated score at baseline relative to discharge across all study cohorts, (ii) there were distinct patterns of disease activity related to duration of illness as well as (iii) early and persistent elevation of disease activity among patients with severe acute pancreatitis defined as persistent organ failure., Conclusions: We present the development and initial validation of a clinical activity score for real-time assessment of disease activity in patients with acute pancreatitis.

This article presents comments made by criminal justice personnel on the field experiment "Police Intervention Riots: The Role of Accountability and Group Norms. A Field Experiment." by Marceline B. R. Kroon. It notes that practitioners involved in this very difficult area of riot policing, tend not to have much contact with the academic community in helping to evaluate their training. The significance of this study may lie, not so much in what was done, but that it was done at all. The other personnel, on the other hand, found much of this research somewhat confusing and is difficult to read.

The studies reported in this paper address the predictions of the social identity model of deindividuation phenomena, or SIDE (Reicher, Spears & Postmes, 1995), concerning the strategic effects of visibility to the in-group: increasing the visibility of in-group members to each other increases their ability to support each other against the out-group and hence increases the expression of those aspects of in-group identity which would attract sanctions from this out-group. In a first study, where anti-fox hunting participants were rendered accountable to pro-fox hunters, the results were the opposite of those expected: participants actually decreased their endorsement of anti-hunt disruption (which had been defined as normative for the in-group but unacceptable to the out-group) when made more visible to the in-group. These results were explained by arguing that participants perceived the intergroup relationship as participants versus experimenters rather than as anti-versus pro-fox hunters and that in-group visibility was being used to resist an experimentally imposed definition of themselves as favouring disruptive activity. This interpretation was supported in a second study where participants' accountability to the pro-fox hunters was removed, leaving them solely accountable to the experimenters, and similar results were obtained. In the final study, the relationship between student participants and staff experimenters was made the explicit topic of study. As expected students increased their endorsement of activities that are normative to students but unacceptable to staff when visible to fellow in-group members. Together these results provide further support for the SIDE model. [ABSTRACT FROM AUTHOR]

A central theme in both medical sociology and health psychology is how people make sense of their symptoms. Both literatures, despite their stress on different aspects of the health evaluation process, see illness in terms of matching present symptoms to an underlying understanding of illness. In this paper we argue that such accounts have difficulty in explaining the impact of contextual factors on how symptoms are evaluated. We therefore propose a model based on self-categorization theory (Turner, Hogg, Oakes, Reicher & Wetherell, 1987). It is proposed that symptoms are evaluated, not against pre-existing illness representations, but by reference to their impact on situationally salient identities. In support of this an experiment is described which involves students who are training to be physical education (PE) teachers. They are defined either in terms of a 'PE student' identity or in terms of a 'gender' identity and asked to evaluate a number of scenarios which describe different illnesses and injuries. Overall, the results provide clear evidence that the significance ascribed to scenarios depends on which identity is salient and hence indicate the viability of a self-categorization theory approach to symptom evaluation. [ABSTRACT FROM AUTHOR]

This paper builds upon Reicher's (1984 a) model of deindividuation by arguing that manipulations of identifiability do not only affect the salience of social identity but also have strategic consequences for the expression of in-group stereotypes. Increasing the visibility of group members to a powerful out-group should decrease the ability of those members to express any aspects of their identity which would meet resistance from the out-group. A preliminary study found that making supporters of the Campaign for Nuclear Disarmament individually identifiable to a powerful out-group only affects the incidence of stereotypic behaviours which would be punishable by that out-group. In the main study, science students taking a psychology course are either defined as 'scientists' or as 'students'. They are then asked to complete a questionnaire about the psychology course consisting of items where difference from a staff norm would either be unpunishable or punishable. On the punishable items, the 'science' stereotype is compatible with the staff position, while the 'student' stereotype is incompatible. As expected, increased visibility of subjects to academic staff decreases conformity to the in-group stereotype for those defined as students but does not affect the behaviour of those defined as scientists. What is more, this pattern of results only holds for the punishable items. However, contrary to expectations, on the unpunishable items, increased visibility increases conformity to the in-group stereotype for both groups. Taken together, the two experiments confirm that immersing individuals in a group where they are anonymous to outsiders not only predisposes them to act in terms of social identity but also blunts out-group power in such a way as to allow full expression of that identity. [ABSTRACT FROM AUTHOR]

The study described here uses the social identity framework suggested by Tajfel and Turner to argue that de-individuation works by altering the salience of personal vs. social identity. Seventy students from science and 38 students from social science faculties were shown a film presenting arguments for and against vivisection, at the end of which they were told that science students had a pro- and social science students an anti-vivisection norm. Subjects were then told that they were being examined either as members of their faculty group or as individual students. They were either de-individuated or individuated. They were required to fill in an attitude questionnaire and to complete three quasi-behavioural measures. It was predicted that the group condition should increase salience of social identity and adherence to the group norm. It was also predicted that de-individuation in the group condition would further increase salience and hence normative behaviour, while in the individual condition de-individuation would decrease salience and hence normative behaviour. The first prediction was upheld on all the measures, and the second was partially confirmed. [ABSTRACT FROM AUTHOR]

This paper aims to extend the social identity approach to crowd behaviour (Reicher, 1984, 1987) in order to understand how crowd events, and crowd conflict in particular, develop over time. The analysis derives from a detailed account of a violent confrontation between students and police during a demonstration held in November 1988- the so-called `Bank of Westminster'. It focuses on how students came to be involved in the conflict, how the conflict spread and upon the psychological consequences of involvement. This analysis is used to develop general hypotheses concerning the initiation and development of collective conflict, it is concluded that, while the social identity model is of use in understanding these phenomena, it is necessary to recognize how social categories are constructed and reconstructed in the dynamics its of intergroup interaction. [ABSTRACT FROM AUTHOR]

According to traditional models of deindividuation, lowered personal identifiability leads to a loss of identity and a loss of internalized control over behaviour. This account has been challenged by arguing that manipulations of identifiability affect the relative salience of personal or social identity and hence she choice of standards to control behaviour. The present study contributes to an extension of this argument according to which identifiability manipulations do not only affect the salience of social identity but also the strategic communication of social identity. Reicher and Levine (1993) have shown that subjects who are more identifiable to a powerful outgroup will moderate the expression of those aspects of ingroup identity which differ from the outgroup position and which would be punished by the outgroup. Here we seek to show that, in addition, subjects who are more identifiable to a powerful outgroup will accentuate the expression of those aspects of ingroup identity which differ from the outgroup position but which would not be punished by the outgroup. This is because, when identifiable, subjects may use such responses as a means of publicly presenting their adherence to group norms and hence as a means of establishing their right to group membership. A study is reported in which 102 physical education students are either identifiable (I) or not identifiable (NI) to their academic tutors. They are asked to respond on a number of dimensions where pilot interviews show the ingroup stereotype to differ from outgroup norms. Expressions of difference from the outgroup position would lead to punishment on some of these dimensions (P items) but would no, lead to punishment for others (NP items). The predicted interaction between identifiability and item type is highly significant. [ABSTRACT FROM AUTHOR]

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Mass gatherings are a public health challenge because of crowdedness and associated health risks. 'Schoolies' is the largest youth leisure mass gathering in Australia. We examine a coordinated service response called 'Safer Schoolies', which aims to manage risks and optimise health and wellbeing for Schoolies attendees and the surrounding community. We examine 'Safer Schoolies' in a leisure context from a social identity theory-informed perspective; describe the coordinated service response; demonstrate a practical model of data collection, measurement and baselining; and report trends from a survey-based research programme with five annual cohorts of young people who attended Schoolies (N = 1,588). Findings show attendees have strong levels of trust in, and feel highly identified with, their friends at Schoolies, with low psychological distress on average. Service perceptions and help-seeking intentions improved over time, with cohorts increasingly considering service providers to be safe and viable sources of support. As societies continue to open up following COVID-19 restrictions, these insights can inform targeted surveillance and coordinated management of leisure pursuits in youth mass gathering settings. [ABSTRACT FROM AUTHOR]

Social networking sites serve as major platforms for public discourse. However, such sites are also grounds for online abuse, and such abuse is more common in relation to topics that traverse the moral and political sphere. This research examines moral grandstanding, an antecedent of online abuse. Through two studies that employ experimental design, this research provides evidence for the conditions under which online moral grandstanding is most likely to occur, the relationship between moral grandstanding and online conflict, the role of status-seeking in mediating this relationship, and the potential of a self-regulation intervention for moderating these relationships. The theoretical and managerial implications of these findings, along with the limitations of the current work and suggestions for future research, are also provided. [ABSTRACT FROM AUTHOR]

Given their increasing number, corporate brand crises are a subject of growing academic interest. Today's managers face a hostile and often uncontrollable external information environment. Maintaining employee trust during turmoil is key to crisis resolution. However, it is during crises that employee trust can be most threatened. Our study draws on social identity theory to understand the conditions under which trust is destroyed and possibly repaired after a corporate brand crisis. The results from two experimental studies suggest that corporate brand crises decrease employee trust due to the threat to their social image. However, appropriate mitigation strategies that restore employees' social status can effectively repair their trust. This decline and repair dynamic is amplified among highly identified employees, suggesting that organisational identification has a bounce-back effect on this mechanism. [ABSTRACT FROM AUTHOR]

Background and aims: Post-ERCP complications increase with repeated attempts at cannulation. We evaluated several advanced biliary cannulation techniques applied when the standard approach fails. Methods: In total, 1873 consecutive patients underwent ERCP at our institution during the period 2010 - 2014. Guidewire-assisted (GA) cannulation with no contrast injection until deep biliary cannulation was considered the standard technique. Advanced techniques used were double wire-guided (DWG) cannulation, transpancreatic papillary septotomy (TPS), and needle-knife sphincterotomy (NKS). When GA cannulation failed, DWG cannulation was usually attempted first if the pancreatic duct (PD) wire was in place; if that failed, TPS or NKS was performed. Alternatively, TPS or NKS were performed alone. A prophylactic pancreatic stent was placed with repeated PD cannulation or PD contrast injection. During the last 2 years of review, indomethacin suppositories were given post-procedure to all patients who underwent advanced techniques. Results: The overall biliary cannulation success rate was 97 % (1823/1873). Advanced techniques were used in 12 % of ERCPs (230/1873), with 87 % (200/230) success rate. DWG was used alone or in combination with other techniques in 58 % (134/230) of advanced cases, with 68 % (91/134) success rate. Biliary cannulation was achieved in 96 % (91/95) of procedures when DWG was used alone, 76 % (26/34) with TPS alone, 80 % (37/46) for NKS alone, and 84 % (46/55) with multiple techniques. The overall rate of post-ERCP pancreatitis was 0.4 %, with all patients treated conservatively. Conclusion: In our experience at an urban tertiary care center, use of advanced techniques in difficult ERCP improved the overall success rate of biliary cannulation after standard technique failure without a significant increase in complication rate.

Mass gatherings bring large numbers of people into physical proximity. Typically, this physical proximity has been assumed to contribute to ill health (e.g., through being stressful, facilitating infection transmission, etc.). In this paper, we add a new dimension to the emerging field of mass gatherings medicine. Drawing on psychological research concerning group processes, we consider the psychological transformations that occur when people become part of a crowd. We then consider how these transformations may have various consequences for health and well-being. Some of these consequences may be positive. For example, a sense of shared identity amongst participants may encourage participants to view others as a source of social support which in turn contributes to a sense of health and well-being. However, some consequences may be negative. Thus, this same sense of shared identity may result in a loss of disgust at the prospect of sharing resources (e.g., drinking utensils) which could, in turn, facilitate infection transmission. These, and related issues, are illustrated with research conducted at the Magh Mela (North India). We conclude with an agenda for future research concerning health practices at mass gatherings., (Copyright © 2015 Ministry of Health, Saudi Arabia. Published by Elsevier Ltd. All rights reserved.)

Mass gatherings pose distinctive challenges for medicine. One neglected aspect of this is that the behaviour of people participating in such events is different from the behaviour they exhibit in their everyday lives. This paper seeks to describe a social psychological perspective on the processes shaping people's behaviour at mass gatherings and to explore how these are relevant for an understanding of the processes impacting on the transmission of infection. It is inadequate to conceptualize mass gatherings as simply an aggregate of a large number of individuals. Rather, those present may conceptualize themselves in terms of a collective with a shared group identity. Thinking of oneself and others as members of a collective changes one's behaviour. First, one behaves in terms of one's understanding of the norms associated with the group. Second, the relationships between group members become more trusting and supportive. Understanding these two behavioural changes is key to understanding how and why mass gathering participants may behave in ways that make them more or less vulnerable to infection transmission. Implications for health education interventions are discussed., (Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Background and Objectives: The timing of the endoscopic procedures has been recently proposed to be a factor in the quality of colonoscopic polyp detection. We aimed to investigate whether the time-of-day has an effect on the diagnostic yield and specimen adequacy of endoscopic ultrasound fine needle aspiration (EUS-FNA)., Materials and Methods: The retrospective study was set in a safety net community hospital. The 212 EUS-FNAs performed at our institution between July 2011 and January 2014 were retrospectively analyzed. Pancreatic masses, pancreatic cysts, and lymphadenopathy were most common indications for EUS-FNAs. Data were collected with regard to the timing of the procedure, presence of on-site cytopathologic evaluation, the number of needle passes, diagnosis, and specimen adequacy for cytopathologic evaluation. Statistical analysis was performed using unpaired two-tailed Student's t-test., Results: There was no difference in the diagnostic yield for malignancy across all indications between the AM and PM groups. In the morning group 31/87 (36%) procedures and in the afternoon group 50/125 (40%) procedures were diagnostic for malignancy (P = 0.522). There was no difference in the specimen adequacy for cytopathologic evaluation across all indications between the AM and PM groups. In the morning group, 58/87 (67%) procedures and in the afternoon group 90/125 (72%) procedures were adequate for cytopathologic evaluation (P = 0.408). On-site cytopathologist was more available for AM than PM procedures; however, the lack of AM vs. PM difference in the yield and specimen adequacy persisted regardless of on-site cytopathologist presence., Conclusions: Time-of-day of the procedure (morning vs. afternoon) does not affect EUS-FNA diagnostic yield for malignancy or specimen adequacy for cytopathologic evaluation.

In this response, I welcome Pratto's wide ranging and innovative contribution on the social psychology of power. It fulfils an important role in opening up debate around an issue of key importance for our discipline. At the same time (and to further that debate), I take issue with both of her core arguments: First, that power should not be seen as relational but rather about one's ability to reach one's desired ends and, second, that these ends are ultimately about survival. More fundamentally, though, I argue that Pratto's analysis is limited by the fact that she takes the subject of power for granted. This ignores a wealth of research which shows, on the one hand, how power constitutes the nature of subjects and, on the other, how subjects (especially collective subjects - groups) constitute power. It is through exploring these dynamics that we can understand power and its relevance to social life., (© 2015 The British Psychological Society.)

Positive experiences of groups (e.g., the extent to which groups are important and supportive) tend to be associated with better retirement adjustment outcomes. However, group experiences are not always positive, and we know little about their varied contribution to adjustment outcomes. We addressed this gap by exploring the nature of social group memberships - in terms of varying positive and negative experiences of groups - to better understand how social group memberships shape retirement adjustment, life satisfaction and mental health. A latent profile analysis (using data from 489 retirees and their membership of 1887 groups) identified four profiles of social group memberships: optimal (63%), slightly straining (13%), low-supportive (18%) and ambivalent (6%). Subsequent regression analysis showed that these different profiles of group membership were differentially associated with retirement adjustment outcomes: belonging to more optimal groups was associated with better perceived adjustment, higher life satisfaction and better mental health, while belonging to slightly straining and ambivalent groups contributed to poorer adjustment, lower life satisfaction and greater depression. These findings have implications for theory and practice, not least because they advance our understanding of the diversity of people's group memberships and their contribution to retirement and health outcomes., (© 2023 The Authors. British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)