The Dopamine D4 Receptor (DRD4) Exon 3 VNTR Contributes to Adaptive Personality Differences in an Italian Small Island Population

The search for evolutionary forces shaping the diversity of human personality traits encouraged studies that have found that islanders are relatively closed and introverted, with little interest in the external world. The ‘personality gene flow’ hypothesis was proposed to explain the mechanism underlying this difference, suggesting that the frequency of alleles that influence islander personality traits might progressively increase in the gene pools on islands because of selective emigration of individuals not displaying these alleles. We genotyped 96 individuals from the Italian mainland and 117 from Giglio Island, whose residents were previously assessed regarding their personality traits. We genotyped three polymorphisms: the dopamine D4 receptor (DRD4) exon 3 repeat region, the serotonin‐transporter SLC6A4 5‐HTTLPR indel and the dopamine transporter SLC6A3 DAT1 3′UTR repeat region. Only the DRD4 exon 3 repeat was hypothesised to show varying allele frequencies because this polymorphism could be associated with human migration and personality traits such as extraversion, openness and novelty seeking. As predicted, no differences in allele frequencies were found for the SLC6A4 and SLC6A3 polymorphisms, whereas significant differences were observed in the frequency of the DRD4 exon 3 alleles. The DRD4.2 repeat was more common in mainlanders, as expected, whereas the DRD4.7 allele was over‐represented among islanders who never emigrated. This last result contradicts the suggested association of this allele with long‐distance migrations. We suggest that emigration might have caused gene flow out the island that resulted in somewhat unpredictable changes in the frequencies of specific alleles, thus influencing islander personality traits. Copyright © 2013 European Association of Personality Psychology     

Emotional Stability and Affective Self‐regulatory Efficacy Beliefs: Proofs of Integration between Trait Theory and Social Cognitive Theory

The present study aimed to investigate the development and interplay of emotional stability and affective self‐regulatory efficacy beliefs through adolescence to young adulthood. A latent growth curve approach was used to investigate level and stability of emotional stability and self‐efficacy in managing negative emotions and in expressing positive emotions. We found that initial levels of emotional stability and self‐efficacy beliefs are highly correlated. In accordance with the posited hypothesis, the growth rate of perceived self‐efficacy in managing negative emotions predicted the growth rate of emotional stability, whereas the opposite path was not significant. The growth rates of perceived self‐efficacy in expressing positive emotions and emotional stability were not related to each other. Taken together, these findings point to self‐efficacy beliefs as instrumental to the change of traits. Practical implications of results are discussed, highlighting the role of social cognitive theory in supplying the proper strategies to design effective interventions to enable people to make the best use of their potentials. Copyright © 2012 John Wiley & Sons, Ltd.     

The Core of Darkness: Uncovering the Heart of the Dark Triad

The Dark Triad consists of three overlapping but distinct personality variables: narcissism, Machiavellianism and psychopathy. To date, however, no research has empirically identified what leads these three variables to overlap or whether other variables share the same core. The present research addresses why and how dark personalities overlap. Drawing from classic work in psychopathy, Hare's Factor 1 or manipulation and callousness were found to be the common antagonistic core. A series of latent variable procedures, including Multisample Structural Equation Models, revealed that for both samples, manipulation and callousness, completely accounted for the associations among the facet scores of the psychopathy, narcissism and Machiavellianism scales. Sample 2 also included Social Dominance Orientation, and results further confirmed that Social Dominance Orientation has the same common core as the Dark Triad. In sum, Hare's Factor 1—manipulation–callousness—emerged as common dark core that accounts for the overlap among antagonistic traits. Copyright © 2012 European Association of Personality Psychology     

Anchoring Bullying and Victimization in Children Within a Five‐Factor Model‐Based Person‐Centred Framework

Although researchers have begun to explore bullying and victimization problems from a personality perspective, more work is needed on the particular personality constellations of children and adolescents who are vulnerable to victimization or prone to bullying. The principal research goal of the present study was to anchor the robust four‐group classification of bullying and victimization (i.e. bullies, victims, bully/victims and uninvolved children) within the Five‐Factor Model‐based person‐centred framework in primary school children (N = 660), controlling for gender. We found four distinct personality types in middle childhood: a mixed type, an undercontrolled type, a moderate type and a resilient type. In line with expectations, we found that a resilient personality profile protected children and adolescents against victimization and that children and adolescents with an undercontrolled or mixed personality profile were at increased risk to be bully/victims, rather than uninvolved in bully problems or victimization, compared with children with a moderate personality profile. Implications for theory and practice are discussed. Copyright © 2013 John Wiley & Sons, Ltd.     

Military Leaders’ Adaptability in Unexpected Situations

This paper investigates adaptability among lower-level military leaders in unexpected threatening situations. Two studies were performed. In the first, a grounded theory approach was used, and 16 Swedish officers and soldiers with experience from international peacekeeping operations were interviewed. A model was developed based on the results. In Study 2, the model concepts from Study 1 were operationalized into a questionnaire and data was obtained from 102 respondents from the Swedish Armed Forces who had recently served in Afghanistan. Based on Study 1, the model suggests that the key aspects of adaptive leadership in such circumstances are 2 balancing acts. One is how subordinates handle structure/following rules versus their own initiatives/freedom of action. The other concerns the balance between individual decision making versus group input. Both are affected by availability of time, resulting in a favorable/unfavorable outcome. The hypotheses from Study 1 were partly confirmed in Study 2.     

On the prediction of academic performance with personality traits: A replication study

We describe a large sample study (N = 652) that had two purposes. The first was to replicate a previous study (Paunonen & Ashton, 2001a, Journal of Research in Personality) in which we showed that lower-level personality trait measures related to achievement motivation predict the academic success of university students. The second purpose was to test our earlier conclusion that such lower-level traits are frequently superior to broader personality factors for accuracy in prediction. Both purposes were met in this study, providing more evidence for our general claim that aggregating narrow personality trait measures into broad factor measures can sometimes have negative consequences regarding the prediction and understanding of important outcomes, including academic performance.     

Personality Traits and Political Participation: Evidence from South Korea

Using a nationally representative survey fielded in 2009, we analyze the relationships between personality traits and various modes of political participation in South Korea. We find statistically significant relationships between personality (measured by the Five‐Factor Model) and several nonelectoral modes of participation. Openness correlates positively with protest participation, rally attendance, financial contributions to political causes, news media contacts, and political activities via the Internet. Agreeableness correlates negatively with these five participation modes as well as petition signing. Conscientiousness is positively associated with individual political acts (e.g., contacting news media and elected officials and donation), while it is negatively associated with collective actions such as participation in rally. However, we do not find any significant relationship between personality and voter turnout. Reflecting an unusually conflictual political climate of South Korea in 2008, we discuss these findings' implications focusing on the personality‐situation interactions.     

Schizotypal and dependent personality characteristics and managerial performance

The study of negatively connotated personality characteristics as predictors of work‐related performance is gaining momentum. While findings have generally suggested such characteristics to be negatively or curvilinearly related to performance, the current study was concerned with investigating any positive relationships that may exist between negatively connotated personality characteristics (as measured by the Hogan Development Survey) and work‐related performance in a sample of 103 Australasian financial services managers. The most notable findings from the study were that: (a) schizotypal personality characteristics positively predicted performance on a creativity competency; and (b) dependent personality characteristics positively predicted performance on a customer focus competency. Findings and limitations are discussed.