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Abstract We investigated the putative redundancy of the Dark Tetrad (specifically, Machiavellianism-psychopathy and sadism-psychopathy) through an examination of the differences between correlations with self-reported narrowband personality traits. In addition to measures of the Dark Tetrad, participants in four studies completed measures of various narrowband traits assessing general personality, aggression, impulsivity, Mimicry Deception Theory, and Reinforcement Sensitivity Theory. Results generally supported empirical distinctions between Machiavellianism and psychopathy, and between sadism and psychopathy. Machiavellianism significantly differed from psychopathy across correlations for nine of 10 traits (Study 1), 8 of 25 facets (Study 2), aggression (Study 3), 12 of 25 facets (Study 3), four of five facets (Study 4), impulsivity (Study 4), and five of six facets (Study 4). Sadism significantly differed from psychopathy across correlations with five of 10 traits (Study 1), eight of 25 facets (Study 2), reactive aggression (Study 3), 10 of 25 facets (Study 3), three of six facets (Study 4), impulsivity (Study 4), and three of six facets (Study 4). Our findings challenge the claims that Machiavellianism and psychopathy, as well as sadism and psychopathy, as currently measured, are redundant.

Background This study investigates the relationships between an individual’s self-satisfaction within different life areas, which correspond to Bracken’s self-concept primary domains (competence, family, social, physical, emotional, and academic domains), and Zuckerman’s Alternative Five-Factor Model of Personality (AFFM). It is supposed that the AFFM, as a psychobiological personality model which allows causal explanations, could provide a comprehensive insight into the nature of satisfaction with self. Participants and procedure The study included 489 adults (64% women), between 18 and 60 years old, who completed the short Self-Satisfaction Scale (SC-6) and the Zuckerman-Kuhlman-Aluja Personality Questionnaire (ZKA-PQ). Relations between personality factors and facets from the ZKA-PQ and self-satisfaction measures were analyzed using correlational and multiple regression analysis. The relationship of self-satisfaction with gender and age was also analyzed. Results Based on responses to scales, 11% to 43% of the variance in self-satisfaction responses was predicted by personality, age, and sex. Extraversion had positive predictive weights for each self-satisfaction dimension. Neuroticism had negative predictive weights which were significant except for satisfaction with family. Sensation seeking negatively predicted satisfaction with competencies, family, academic aspects, emotions, and overall satisfaction. Aggression had small negative predictor weights for satisfaction with social and academic aspects. Activity had significant positive predictor weights for competencies, academic aspects, emotions, and overall satisfaction. Conclusions The findings suggest that personality predicts satisfaction with aspects of the self, and that the AFFM provides an adequate theoretical framework, which includes a lower level of personality traits in the explanation of the nature of a person’s satisfaction, in general or related to specific life contexts.

The present study examined how the personality dimensions of the Dark Triad (i.e., Machiavellianism, narcissism, and psychopathy) predict infidelity intentions and jealousy and whether these variables predict conflict tactics used in relationships. Adult women (N = 567, 18–73 years old, Mage = 31.91; SD = 10.29) completed self-report scales assessing the Dark Triad traits, jealousy (i.e., cognitive, emotional, and behavioral), intentions towards infidelity, and conflict tactics, including negotiation, psychological aggression, physical assault, sexual coercion, and injury. Our results demonstrated that the Dark Triad traits had strong links to the intention to commit infidelity and jealousy, and at the correlational level, there were small correlations between jealousy and the intention to commit infidelity. Both jealousy and the intention to commit infidelity predicted conflict tactics. As this is possibly one of the first studies to examine these variables jointly, the present results add to our understanding of the role of personality in romantic relationships.

Narcissism is one of the oldest recognized personality traits in the history of psychological theory and research and has been suggested by some to be associated with purpose-in-life. The present study investigates the relationship between 15 subscales of narcissism and purpose-in-life based on self-report responses from 691 university students. Results revealed significant and positive correlations between purpose-in-life and seven of the narcissism scales. Significant negative correlations were between purpose-in-life with the subscales of shame and admiration. Nonsignificant correlations were found for six of the narcissism subscales and purpose-in-life. A direct-entry regression analysis demonstrated that approximately 38% of the variance in purpose-in-life was predicted by higher need for acclaim seeking and lower need for admiration narcissism scale scores. When the three-factor narcissism model was examined, purpose-in-life was significantly predicted positively by Agentic Extraversion and negatively by Narcissistic Neuroticism, accounting for 25% of the variance. The findings suggest that purpose-in-life may be a motive that delineates different dimensions of narcissism.

Background Findings show that the complex nature of humor and its personality basis can be more comprehensively understood if humor styles are analyzed simultaneously within humor types, rather than separately. Participants and procedure Utilizing two independent samples (N1 = 253, N2 = 353) of self-report responses to the Humor Styles Questionnaire (HSQ) and the Zuckerman-Kuhlman-Aluja Personality Questionnaire-Short Form, this paper outlines how the HSQ responses result in three humor use types following cluster analysis. Cluster differences in humor styles and personality traits were analyzed using ANOVA. Results In both samples, a humor type characteristic of individuals who scored lower in the positive and higher in the negative humor styles was revealed. People within this humor type also scored significantly higher in the personality measures of neuroticism and aggressiveness. A second humor type replicated in the two studies described individuals scoring higher for each of the four humor styles. People within this type also scored significantly higher on extraversion and sensation seeking, suggesting a need for cortical arousal. The third humor type members scored lower in each of the humor styles (apart from the affiliative humor style scores for one of the samples). This humor type requires further investigation. Conclusions In general, humor types provide an additional understanding of humor use as people within the types differ for specific personality dimensions.

Background Although people are familiar with loud automobiles, equipped with modified mufflers to increase the volume, it is unclear who is most attracted to these vehicles. Participants and procedure A sample of 529 (52% men) undergraduate business students were surveyed and were asked if they viewed their car as an extension of themselves, how much they thought loud cars were “cool”, and if they would make their car louder with muffler modifications. Cronbach’s α of the three car items was .76; therefore an aggregate was generated. Also a self-report measure of the dark tetrad was completed. Results Using linear regression, the car aggregate was predicted by being a man and having higher scores on psychopathy and sadism, with the model accounting for approximately 29% of the variance. Conclusions As car modifications are illegal in some countries, these findings may be of interest to those heading campaigns to halt these activities.

There is a well-supported link between experiences of childhood neglect and levels of loneliness in adulthood, with emotional neglect from caregivers being predictive of loneliness. However, current research has yet to explore additional, sex-linked factors that influence this relationship. This study investigates the impact of different neglect types on loneliness, with a focus on the parental figure involved and the child’s sex. It was hypothesized that men who experienced emotional neglect from their fathers would score higher in loneliness compared to other parent–child combinations. The findings showed no significant differences in father–son relationships within the context of emotional neglect. However, there was a significant difference in father–son relationships in the context of supervision neglect and loneliness outcomes, relative to all other parent combinations. Consistent with existing research, emotional neglect emerged as the strongest predictor of loneliness. Additionally, sex differences were observed, with women experiencing greater levels of loneliness stemming from neglect compared to men. These findings help address the knowledge gap present in childhood neglect research, with the goal of understanding the long-term consequences of adverse childhood experiences.

The relationships between self-report loneliness and the four humor styles of affiliative, aggressive, self-defeating, and self-enhancing were investigated in 15 countries (N = 4,701). Because loneliness has been suggested to be both commonly experienced and detrimental, we examine if there are similar patterns between humor styles, gender, and age with loneliness in samples of individuals from diverse backgrounds. Across the country samples, affiliative and self-enhancing humor styles negatively correlated with loneliness, self-defeating was positively correlated, and the aggressive humor style was not significantly related. In predicting loneliness, 40.5% of the variance could be accounted. Younger females with lower affiliative, lower self-enhancing, and higher self-defeating humor style scores had higher loneliness scores. The results suggest that although national mean differences may be present, the pattern of relationships between humor styles and loneliness is consistent across these diverse samples, providing some suggestions for mental health promotion among lonely individuals.

Background The Dark Triad literature examining pro-social behaviours is minimal, with mixed results. Participants and procedure This study investigates the relationships between the Dark Triad and altruistic behaviours based on self-report data from 286 adults. Altruism was assessed using two scales: a general measure as well as a more recent scale measur-ing compassionate altruism towards family, friends, and strangers. Results Machiavellianism negatively correlated with general altruism; however, when controlling for the other dark variables plus age and gender in a regression, narcissism was the only Dark Triad trait that significantly predicted altruism. None of the Dark Triad traits were significantly related to or predictive of compassionate altruism. Conclusions This study demonstrates that the Dark Triad and altruism relationships are not straightforward, and that, surprising-ly, strong negative relationships between the traits and altruism are not found. Limitations and future research direc-tions are discussed.

This paper investigates how horizontal and vertical individualism and collectivism predict self-report loneliness in addition to the variance accounted for by age and sex in 28 countries (N = 8,345). Horizontal and vertical aspects of individualism and collectivism had small but significant contributions to predicting loneliness. Horizontal-collectivism (for 19 country samples) and, to a lesser extent, horizontal-individualism (for seven country samples), significantly predicted lower loneliness scores. Vertical-individualism (for 16 country samples), and to a lesser extent, vertical-collectivism (for six country samples), predicted feeling more loneliness among our participants. Adjusted R2 values suggested that between 0.6% and 27.7% of self-report loneliness was predicted. These results suggest that those who value egalitarian social relations also tend to report being less lonely whereas those who value individuality and competitiveness endorse the loneliness items more. These results are of importance to those investigating and helping lonely individuals by appreciating the influence of perceived culture.

The relationships between loneliness and facets of narcissism were investigated based on responses from 696 (46% women) university students. Bivariate correlations revealed small negative correlations between loneliness and the narcissism scales of arrogance and acclaim seeking. A medium positive correlation was between loneliness and reactive anger and medium negative correlations were with exhibitionism and authoritativeness. Large positive correlations were between loneliness and shame, need for admiration, and distrust and a large negative correlation was with indifference. To further examine how loneliness and narcissism are possibly related, the narcissism facets were examined using latent profile analysis, resulting in three profiles. The profile with high scores for the narcissism facets of shame, need for admiration, authoritativeness, grandiose fantasy, acclaim-seeking, and distrust had significantly higher loneliness scores compared to the two other narcissism profiles. These results add to our understanding of both loneliness and narcissism. Limitations and future directions are discussed.

Two studies were performed to determine whether political orientations were related to loci-of-hope, which are where one acquires or sustains one's hope that one's goals may be achieved. Study 1 employed a nationally representative sample of Canadian English-speaking adults (N = 866), who completed the Locus-of-Hope Scale (Bernardo, 2010) that measures the extent to which trait hope comes from four different sources: from oneself as an individual; from one's family; from peers; and from one's sense of spirituality or religious faith. The results indicate that the peer locus-of-hope was associated with liberalism, while the spiritual and family loci were related to conservatism. The participants in Study 2 were Canadian university students (N = 555) who completed the Locus-of-Hope Scale as well as a related measure that treats hope as an emotional state rather than a trait. In this sample, there were again significant associations between political orientations and loci-of-hope at the peer and family loci such that greater reliance on peers predicted more liberal orientations, and greater dependence on family was associated with more conservative outlooks. The implications of these findings for three established theoretical paradigms that purport to explain the acquisition of political orientations are explored.

Substance abuse can be used as a coping strategy to manage stress related to academic activities and is a risk-taking behavior that is also associated with people with higher levels of the Dark Tetrad personality traits. Our study aimed to investigate the association between substance abuse and the Dark Tetrad in students in health and non-health sciences fields. Our sample was composed of 174 college students between 18 and 58 years old (M = 25.60; SD = 9.14). Students completed self-report psychopathy, narcissism, Machiavellianism, sadism, and substance use scales. Results suggest that men consumed more substances and scored higher on the Dark Tetrad than women. Also, when comparing fields, men from health sciences tended to score higher on dark personality traits. These results emphasize the potential risk factors associated with dark personality traits and the consumption of licit and illicit substances by college students, highlighting the need for further studies with this population and the impact of these behaviors and characteristics on future professional practice.

An important factor in vocational choice is whether to pursue a career in the public sector or the private sector. The perception of each sector impacts career choice, attracting individuals with certain traits. This perception-based attraction is important for public sector managers to understand what the ramifications of their branding are on recruitment, and whether it is impacting their workforce or ability to attract appropriate talent. Despite this importance, existing literature is very limited and presents contradictory findings. The present study investigated the impact of the Big Five personality traits (openness, conscientiousness, extraversion, agreeableness, and neuroticism) on interest in public sector employment generally, as well as separately for all three levels of government (local, provincial, and federal), for men and women enrolled in a first-year management program. Extraversion was negatively related to an interest in the public sector for all three levels of government. Men and women did not differ significantly in their level of attraction to the public sector, and no statistically significant differences in personality-based interest were found between the three levels of government. An exploratory analysis of general interest in each level of government found that interest in the federal government was significantly higher than the municipal and provincial governments, although still low for all three levels of government. These results indicate potential challenges for public sector managers to attract candidates for highly social roles requiring an extraverted character.

The prediction that neuroticism (or emotional instability) will change the definition of an intelligence factor, or g, was tested in a large sample (N = 2,716) of British managers who completed both personality and intelligence measures. Specifically, we examine if the structure of mental abilities changes across levels of personality (with a focus on the neuroticism/adjustment dimension). The results demonstrate that, similar to a recent report, there is some evidence supporting the suggestion that intelligence scales inter-correlate higher for less adjusted individuals, but that the effect is not strong enough to impact intelligence and personality research.

This comprehensive review summarizes and evaluates the present state of the Dark Triad research literature (or more broadly, the dark personality trait literature), and as such serves both a pedagogical purpose, by providing an introduction or primer on the dark personality literature and a scientific purpose by directing future research on key issues that still have not been sufficiently addressed. In this review, we discuss and critique current operational conceptualizations of what it means for a personality trait to be classified as ‘dark’. Also discussed is the Dark Core, as well as quantitative issues such as limitations of commonly used statistical treatments, such as multivariate analyses, bifactor modeling, and composite measures, and proposed solutions to some of these issues. Based on a comprehensive and critical appraisal of the literature, future directions are suggested to drive the dark trait field towards a more organized, parsimonious, and productive future.

Communication and relationships have been dramatically altered among emerging adults thanks to the rapid adoption of the smartphone in just over a decade. Studying the effects of evolving personal technology helps researchers understand both the detriments of widespread adoption and the benefits that accompany the technology. One such area of concern is the relationship of technology with loneliness. Emerging adulthood is described as the period of transition from adolescence to adulthood, taking place from age 18–25. This period is characterized by change, exploration, but also a vulnerability to psychological distress. Young adults are not only at greater risk of loneliness compared to other developmental stages, but report greater distress about being lonely (Rokach, 2000). Previous research has found support for the hypothesis that use of social communication on the Internet has a bidirectional relationship with loneliness (Nowland et al., 2018); use of the Internet can support relationships and decrease loneliness, but if used as a compensation for social skill deficits, the Internet can also displace quality time spent in relationships, and thereby increase loneliness. This study examines loneliness and its relationship with smartphone use, while also accounting for individual differences in facets of neuroticism, communication apprehension, emotional support, and nomophobia for emerging adults. Participants (N = 302; MAGE = 18.85) completed self-report measures of loneliness and the individual differences variables. They also reported average daily smartphone data of screen time, pickups, and application (app) use, which was measured by their personal devices. Correlations indicated loneliness was positively associated with screen time, social media app use, neuroticism, social recognition, communication anxiety, and nomophobia. Loneliness was negatively associated with smartphone pickups, communication application use, need for affiliation, and emotional support. A regression analysis revealed that neuroticism, need for affiliation, social recognition, emotional support, and smartphone pickups were significant predictors of loneliness, when taking into account all the individual difference and smartphone use variables. Neuroticism and loneliness have a strong relationship, but a hierarchical regression showed that over and above neuroticism and its facets, smartphone screen time and pickups predict loneliness. Overall, the results for this sample of emerging adults supported the hypotheses by Nowland et al. (2018) about social use of the Internet, but applied to smartphone use. More time spent on one's smartphone and on social media apps is related to increased loneliness, and is discussed in context of identity development. More frequent use (pickups) and use of communication apps is related to decreased loneliness and is discussed with respect to development of relationship intimacy. These results suggest that loneliness in young adults is related to different types of smartphone use, even when accounting for stable characteristics such as personality. Finally, neuroticism remains a significant variable in understanding loneliness, and further examination of lower-order facets help define a more nuanced profile in individual differences.

Toxic leadership is becoming increasingly common in healthcare organizations and there is strong need for studies focusing on organizational factors that can trigger revenge. Additionally, how psychological well-being functions in shielding against toxicity has not been adequately studied. Hence, this study aims to examine the relationship between toxic leadership and vengeful behaviors of nurses, along with the contingency of psychological well-being on the relationship during the COVID-19 pandemic. In this exploratory cross-sectional study, we attempt to examine the antecedent effect of toxic leadership on vengeful behaviors based on self-reports from 311 nurses. Using partial least squares and moderation analyses, the results show that toxic leadership is an important antecedent of vengeful behaviors among nurses. However, the results provide no statistical evidence to support a moderating role of psychological well-being in the relationship between toxic leadership and vengeful behaviors. This study reveals that nurses exposed to toxic behaviors by their superiors are more likely to engage in vengeance and highlights the fact that nurses are suffering psychologically during the pandemic.

Background: This study investigated the relationships between the Dark Triad of personality (sub-clinical psychopathy, Machiavellianism, and narcissism) and four political variables: socio-religious conservatism, support for greater economic equality, overall liberal–conservative orientation, and interest in politics. A theoretical approach that focused on the influence of the Dark Triad in large groups was provided to interpret those relationships. Methodological issues found in previous research that related to the use of abbreviated scales to measure the dark traits and the use of unidimensional indicators of political orientations were addressed. Methods: A hierarchical regression analysis was conducted to determine whether any of the three dark traits could explain variance in the aforementioned political attributes over and above that accounted for by the Big Five, sex, age, and nationality, using the full personality scales and measures of political orientation that captured both social and economic liberalism–conservatism. Results: Machiavellianism uniquely predicted lower levels of socio-religious conservatism, and both Machiavellianism and narcissism uniquely predicted lower levels of overall conservatism. Conclusions: There were important links between the Dark Triad and politics.

Background: As little research has been devoted to examining associations between the four locus-of-hope dimensions (internal, external—peer, external—family, and external—spiritual) and individual differences, the current study explores the correlations with individual-level individualist and collectivist relational tendencies, self-esteem, insecure attachment, and gender within a culturally diverse sample of university undergraduate students. Methods: questionnaires were completed by a culturally diverse sample of undergraduate students measuring locus-of-hope, individualist and collectivist relational tendencies, self-esteem, insecure attachment, and gender. Results: State and trait locus-of-hope were significantly correlated. Individualism showed positive correlations with internal and external—family locus-of-hope. Collectivism positively correlated with internal locus-of-hope and the three external locus-of-hope dimensions. Internal locus-of-hope was significantly predicted by self-esteem, relational self-esteem, individualism, and collectivism. External—spiritual locus-of-hope was not significantly predicted by the variables. External—family locus-of-hope was significantly predicted by relational self-esteem and collectivism and external—peer locus-of hope was significantly predicted by relational self-esteem, collectivism, and avoidant attachment style. No significant gender differences in locus-of-hope were found. Conclusions: The results provide further understanding about the construct of locus-of-hope and provide a foundation for future research to continue exploring the role of locus-of-hope in the development and expression of self-esteem and attachment profiles.

Loneliness and feeling that one does not matter are closely linked, but further investigation is needed to determine differentiating features. The relationship between not mattering to others (anti-mattering) and loneliness was explored by assessing how the two constructs correlated with an interpersonal dimension, specifically four humor styles (affiliative, self-enhancing, self-defeating, and aggressive). One hundred and fifty-eight women and 96 men completed a three-item loneliness scale, a new measure of anti-mattering, and a humor styles questionnaire. Confirmatory factor analysis results indicated that the new anti-mattering measure is a unidimensional scale. Loneliness and anti-mattering were strongly correlated, and each correlated in the same direction with approximately the same magnitude as the four humor styles. The discussion concludes that anti-mattering and loneliness are strongly linked, a finding which may be important in psychological treatment. Humor styles also play a role in psychological well-being and present a unique pathway to mental health.

The many devastating mental health outcomes associated with chronic loneliness is the motivation behind research into examining personal and demographic characteristics of the lonely. The present study sought to examine the connection of where people live (degree of urbanization) and what people do (leisure activities) with self-report of loneliness in a large sample (N = 8356) of unrelated Dutch adults. Information regarding where people live and what they do in their leisure time was entered into a regression analysis for self-reported loneliness. The overall regression was significant and accounted for 2.8% of the loneliness scale scores. Significant independent predictors for loneliness were living in heavily urbanized areas and engaging in fewer social activities. People who went sightseeing or to amusement parks/zoos or who participated in clubs reported being less lonely. Spending time using a computer predicted higher self-report loneliness scores. Consistent with previous research, after controlling for other variables, gender was not a significant predictor of loneliness but both a younger age and a curvilinear or U-shaped curve of age predicted loneliness (the younger and the much older). The results suggest that meaningful interpersonal interactions may result in lower feelings of loneliness.

The differentiation of personality by intelligence hypothesis suggests that there will be greater individual differences in personality traits for those individuals who are more intelligent. Conversely, less intelligent individuals will be more similar to each other in their personality traits. The hypothesis was tested with a large sample of managerial job candidates who completed an omnibus personality measure with 16 scales and five intelligence measures (used to generate an intelligence g-factor). Based on the g-factor composite, the sample was split using the median to conduct factor analyses within each half. A five-factor model was tested for both the lower and higher intelligence halves and were found to have configural invariance but not metric or scalar invariance. In general, the results provide little support for the differentiation hypothesis as there was no clear and consistent pattern of lower inter-scale correlations for the more intelligent individuals.

Phenotypic, genetic, and environmental correlations between various reaction time measures and intelligence were examined in a sample of six-year-old twin children (N = 530 individuals). Univariate genetic analyses conducted on the same-sex pairs (101 monozygotic (MZ) pairs and 132 same-sex dizygotic (DZ) pairs) demonstrated that the intelligence measure and four of the seven reaction time measures had a genetic component (ranging from 44% to 76%). At the phenotypic level, half of the reaction time measures had significant negative correlations with the intelligence measure. Bivariate genetic analyses revealed that only two of the observed phenotypic correlations could be explained by common genetic factors and that the remaining correlations were better explained by common environmental factors.