The Dark Triad of Personality in the Context of Health Behaviors: Ally or Enemy?

Machiavellianism and psychopathy affect sleep quality in people with affective disorders and mentally healthy individuals

Introduction

Deteriorated sleep quality is a predisposing factor and symptom of affective disorders (AD). It is important to investigate factors driving the relationship between sleep and AD, such as personality traits. Previous research has shown that personality traits such as the Dark Triad personality traits (DT) narcissism, Machiavellianism, and psychopathy are associated with sleep problems and AD. The current study examined the moderating influence of the DT in the relationship between AD [versus healthy controls (HC)] and sleep quality.

Methods

Data of 657 individuals (267 HC, 390 AD; 483 female, 166 male, eight diverse; Mage = 34.87, SDage = 13.86) were collected in an online survey, which administered the Pittsburgh Sleep Quality Index and the Short Dark Triad questionnaire.

Results

Moderation analyses controlling for age and gender revealed that Machiavellianism (b = -0.76, p < 0.05, R2 = 0.35) and psychopathy (b = -1.15, p < 0.05, R2 = 0.35), but not narcissism (b = -0.20, p = 0.620, R2 = 0.35), had a negative effect on sleep quality. Specifically, this effect is more pronounced in the HC group, but sleep quality is generally worse in AD.

Conclusion

Our findings indicate that Machiavellianism and psychopathy should be considered in the prevention and treatment of AD-associated sleep problems. Particularly, monitoring these traits could help to implement timely measures for the prevention of sleep problems, such as psychoeducation and sleep hygiene. The results highlight the role of personality in the aetiopathogenesis of AD and require further differentiation to examine the underlying pathways between the DT, sleep, and AD.

Metabolic Syndrome in Affective Disorders: Associations with Dark Triad Personality Traits

Previous research has focused on the relationship between affective disorders (AD) and metabolic syndrome (MetS). Aside from biological and lifestyle factors, personality traits were identified as influencing aspects. In particular, the Dark Triad personality traits (DT; Machiavellianism, narcissism, psychopathy) were connected to both AD and worse somatic health, thus possibly resulting in MetS. This observational study aimed to investigate the associations between DT and anthropometric parameters and differences in the DT traits concerning the presence of MetS in individuals with AD. A total of 112 individuals (females = 59, males = 51, diverse = 2, Mage = 47.5, SDage = 11.5) with AD filled out the Short Dark Triad questionnaire. Body Mass Index (BMI) and MetS criteria, including blood pressure, waist circumference, lipid, and glucose levels, were assessed. For Machiavellianism, a positive association with BMI (r = 0.29, p < 0.05) and a negative association with systolic blood pressure (r = -0.23, p < 0.05) were found. No relationship between the overall MetS and DT score (r = 0.08, p = 0.409) was observed. The results were limited by the lack of a control group and the cross-sectional study design, which does not allow for the determination of causality. Machiavellianism was associated with a higher BMI and lower systolic blood pressure, indicating a deteriorating health effect of this trait. Possibly, the higher prevalence of MetS in AD stems from aspects such as lifestyle or medication intake, which might also be influenced by DT. Further research is needed to disentangle underlying mechanisms.

Dispositional employability and self-regulation in antisocial and prosocial personalities: different contributions to employability

The manuscript is based on the dispositional approach of employability, dispositional personality trait theories (dark triad, light triad, HEXACO honesty-humility), and reinforcement sensitivity theory. The facet-focused analysis allowed a more targeted interpretation of the results about the contribution of dark/light personalities and self-regulation for employability and a deeper understanding of practical implications. We analyzed the mediating effect of the behavioral activating system (BAS drive) on antisocial and prosocial traits in predicting employability. The convenient research sample consisted of 343 students. Participants completed: The short dark triad, light triad, honesty-humility, dispositional employability, and BIS/BAS. Dark traits explained 17.5% of work/career resilience, 12% of work identity, 6.4% of career motivation, and 6.6% of openness to changes at work. Narcissism explained 20% of work/career resilience. Prosocial traits explained 19.7% of work/career resilience, 16.8% of work identity, 11.8% of career motivation, and 5.3% of openness to changes at work. Modesty explained 10% of career motivation variance. BAS drive mediates predictions of employability by prosocial and antisocial traits. Demanding attention from others and focusing on making a good impression are effective tools for employability. Prosocial traits significant for BAS drive-activated participants (believing in the goodness of people and avoiding fraud and corruption) can be supported in organizations by providing career growth opportunities.

You Are What You Eat and So Is Our Planet: Identifying Dietary Groups Based on Personality and Environmentalism

Behavioral change interventions promoting the reduction of animal product consumption are valuable tools to improve ecological sustainability as well as public health and help the mitigation of climate change. Recent findings revealed improved efficacy of interventions targeted at barriers (e.g., self-efficacy) of three different types of meat consumers over non-targeted interventions (e.g., completion of unrelated surveys). However, such interventions have yet to factor in the role of individual differences in personality. Therefore, in a first step, we performed segmentation analysis on barriers and benefits of reducing animal product consumption (e.g., meat attachment, environmentalism) with the inclusion of personality. In an online sample of N=1135 participants, latent profile analysis revealed five distinct dietary groups: “plant-based eaters”, “meat-reducers”, “medium-hindrance meat eaters”, “medium strong-hindrance meat eaters, and “strong-hindrance meat eaters”, based on inhibitors and facilitators of meat reduction. Groups differed in terms of consumption of different animal products (η2=0.08 to η2=0.80) as well as the Big Five (η2=0.08 to η2=0.80) and Dark Triad (η2=0.08 to η2=0.80). Strong-hindrance meat eaters were characterized by low Conscientiousness, Agreeableness, and Openness as well as high dark trait expression, implying new targets for future intervention design.

Moral Identity Predicts Adherence to COVID-19 Mitigation Procedures Depending on Political Ideology: A Comparison Between the USA and New Zealand

Reducing the spread of infectious viruses (e.g., COVID-19) can depend on societal compliance with effective mitigations. Identifying factors that influence adherence can inform public policy. In many cases, public health messaging has become highly moralized, focusing on the need to act for the greater good. In such contexts, a person's moral identity may influence behavior and serve to increase compliance through different mechanisms: if a person sees compliance as the right thing to do (internalization) and/or if a person perceives compliance as something others will notice as the right thing to do (symbolization). We argue that in societies that are more politically polarized, people's political ideology may interact with their moral identity to predict compliance. We hypothesized that where polarization is high (e.g., USA), moral identity should positively predict compliance for liberals to a greater extent than for conservatives. However, this effect would not occur where polarization is low (e.g., New Zealand). Moral identity, political ideology, and support for three different COVID-19 mitigation measures were assessed in both nations (N = 1,980). Results show that while moral identity can influence compliance, the political context of the nation must also be taken into account.

Life Satisfaction and Perceived Stress versus Health Promoting Behavior among Medical Students during the COVID-19 Pandemic

AIM

The aim of this study was to evaluate health-promoting behaviors as a factor supporting life satisfaction and a protective factor against stress in a group of Polish medical students during the third wave of the SARS-CoV-2 pandemic.

MATERIAL

The study was conducted in October-December 2021. There were 306 people, including 203 students in the 1st year of medicine, aged 20.42 ± 1.92 years, and 103 students in the 5th year of medicine, aged 24.88 ± 1.7 years.

METHODS

The following were used: the Satisfaction with Life Scale (SWLS), the Health Behavior Inventory (IZZ), and the Perceived Stress Scale (PSS-10). The survey was conducted online.

RESULTS

In the study group, the average result of 23.66 ± 5.97 was obtained in the life satisfaction questionnaire. In the overall assessment of health behaviors (IZZ), an average score of 80.06 ± 13.81 points was obtained. In the PSS-10 questionnaire, the respondents obtained an average of 21.10 ± 5.89 points. There were significant, negative correlations between the results obtained in the health behavior inventory with the results obtained in the stress scale and positive correlations with the results obtained in the life satisfaction scale. Moreover, in the assessment of the influence of prohealth behavior parameters on perceived stress and life satisfaction, a positive effect of PMA on life satisfaction was demonstrated, as well as a protective effect of Positive Mental Attitude (PMA) and Prohealth Activities (PhA) in relation to stress.

CONCLUSIONS

Life in the period of the third wave of the pandemic was assessed by medical students as moderately satisfactory. Significant intensity of stress negatively correlated with life satisfaction. Health-promoting behaviors, and especially positive mental attitudes, seem to play a protective role in stressful situations and improve life satisfaction.

Dark Triad Psychopathy Outperforms Self-Control in Predicting Antisocial Outcomes: A Structural Equation Modeling Approach

Dark Triad traits and self-control are considered viable causal precursors to antisocial and criminal outcomes in youth. The purpose of the present study is to concurrently compare how Dark Triad traits and self-control differ in terms of predicting self-reported juvenile delinquency, CD symptoms, proactive overt aggression, and crime seriousness. The sample consisted of 567 (M = 15.91 years, SD = 0.99 years, age range = 14–18 years) Southern European youth from Portugal. Structural-equation-modelling procedures revealed that the psychopathy factor of Dark Triad traits presented the strongest significant hypothetical causal associations with the antisocial/criminal outcomes, followed by self-control. Machiavellianism and narcissism presented the lowest causal associations. Our findings indicate that psychopathy, as operationalized in the Dark Triad, concurrently surpasses self-control and the remaining factors of the Dark Triad in terms of predicting antisocial/criminal outcomes in youth. This suggests that behavioral disinhibition, or a core incapacity to regulate one’s conduct, is central for understanding delinquency and externalizing psychopathology. Comparatively, the interpersonal component of dark personality features, such as Machiavellianism and narcissism, are secondary for understanding crime.