Findings

Temperament

Kevin Lewis

January 21, 2012

Does power corrupt or enable? When and why power facilitates self-interested behavior

Katherine DeCelles et al.
Journal of Applied Psychology, forthcoming

Abstract:
Does power corrupt a moral identity, or does it enable a moral identity to emerge? Drawing from the power literature, we propose that the psychological experience of power, although often associated with promoting self-interest, is associated with greater self-interest only in the presence of a weak moral identity. Furthermore, we propose that the psychological experience of power is associated with less self-interest in the presence of a strong moral identity. Across a field survey of working adults and in a lab experiment, individuals with a strong moral identity were less likely to act in self-interest, yet individuals with a weak moral identity were more likely to act in self-interest, when subjectively experiencing power. Finally, we predict and demonstrate an explanatory mechanism behind this effect: The psychological experience of power enhances moral awareness among those with a strong moral identity, yet decreases the moral awareness among those with a weak moral identity. In turn, individuals' moral awareness affects how they behave in relation to their self-interest.

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The Eyes and Ears of Status: How Status Colors Perceptual Judgment

Nathan Pettit & Niro Sivanathan
Personality and Social Psychology Bulletin, forthcoming

Abstract:
To those with high status, abundance is granted. Moving beyond the multitude of objective benefits, the authors explore how status, once conferred, colors the perceptual world people inhabit. In four experiments, participants' status state influenced their judgments of status-relevant features in their environment. Participants in a state of high status reported hearing applause (Experiment 1) and seeing facial expressions (Experiment 2), in reaction to their performance, as louder and more favorable. In addition, expectations of how others will respond - expectations stemming from one's current status state - accounted for this effect (Experiment 3). Finally, differences in judgments between participants experiencing high versus low status were observed only when the target of the evaluation was the self (Experiment 4). These results advance scholars' understanding of the psychological experience of status and contribute to the growing literature on the dominant influence psychological states have on people's judgments of their social world.

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Differentiating the effects of status and power: A justice perspective

Steven Blader & Ya-Ru Chen
Journal of Personality and Social Psychology, forthcoming

Abstract:
Few empirical efforts have been devoted to differentiating status and power, and thus significant questions remain about differences in how status and power impact social encounters. We conducted 5 studies to address this gap. In particular, these studies tested the prediction that status and power would have opposing effects on justice enacted toward others. In the first 3 studies, we directly compared the effects of status and power on people's enactment of distributive (Study 1) and procedural (Studies 2 and 3) justice. In the last 2 studies, we orthogonally manipulated status and power and examined their main and interactive effects on people's enactment of distributive (Study 4) and procedural (Study 5) justice. As predicted, all 5 studies showed consistent evidence that status is positively associated with justice toward others, while power is negatively associated with justice toward others. The effects of power are moderated, however, by an individual's other orientation (Studies 2, 3, 4, and 5), and the effects of status are moderated by an individual's dispositional concern about status (Study 5). Furthermore, Studies 4 and 5 also demonstrated that status and power interact, such that the positive effect of status on justice emerges when power is low and not when power is high, providing further evidence for differential effects between power and status. Theoretical implications for the literatures on status, power, and distributive/procedural justice are discussed.

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The powerful select, the powerless reject: Power's influence in decision strategies

Mehdi Mourali & Anish Nagpal
Journal of Business Research, forthcoming

Abstract:
This research examines the influence of power on consumer decision strategies. It proposes that high power directs consumers' attention to options' positive features, making choosing a more preferred strategy than rejecting, whereas low power shifts consumers' focus to negative features, making rejecting a more preferred strategy than choosing. Two studies using different manipulations of power provide consistent support for this effect. The results also indicate that consumers in a state of high power are more satisfied with their choices when they adopt a choosing strategy than when they adopt a rejecting strategy, whereas the opposite is true for consumers in a state of low power. In addition, study 2 shows that the previous effects are reduced when consumers' sense of responsibility is made salient.

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Correlation not Causation: The Relationship between Personality Traits and Political Ideologies

Brad Verhulst, Lindon Eaves & Peter Hatemi
American Journal of Political Science, January 2012, Pages 34-51

Abstract:
The assumption in the personality and politics literature is that a person's personality motivates them to develop certain political attitudes later in life. This assumption is founded on the simple correlation between the two constructs and the observation that personality traits are genetically influenced and develop in infancy, whereas political preferences develop later in life. Work in psychology, behavioral genetics, and recently political science, however, has demonstrated that political preferences also develop in childhood and are equally influenced by genetic factors. These findings cast doubt on the assumed causal relationship between personality and politics. Here we test the causal relationship between personality traits and political attitudes using a direction of causation structural model on a genetically informative sample. The results suggest that personality traits do not cause people to develop political attitudes; rather, the correlation between the two is a function of an innate common underlying genetic factor.

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Reversing the question: Does happiness affect consumption and savings behavior?

Cahit Guven
Journal of Economic Psychology, forthcoming

Abstract:
This paper attempts to answer an interesting but empirically challenging question: Do changes in well-being (life satisfaction or happiness) lead to changes in consumption and savings behavior? The paper uses regional sunshine as an instrument for personal happiness using the Dutch Household Survey from the Netherlands. Sunshine improves happiness significantly. Instrumenting happiness with sunshine, happier people are found to save more, spend less, and have a lower marginal propensity to consume. Happier people take more time for making decisions and have more control over expenditures; they expect a longer life and (accordingly) seem more concerned about the future than the present; they also expect less inflation in the future.

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An examination of the impact of harsh parenting contexts on children's adaptation within an evolutionary framework

Melissa Sturge-Apple et al.
Developmental Psychology, forthcoming

Abstract:
The current study tests whether propositions set forth in an evolutionary model of temperament (Korte, Koolhaas, Wingfield, & McEwen, 2005) may enhance our understanding of children's differential susceptibility to unsupportive and harsh caregiving practices. Guided by this model, we examined whether children's behavioral strategies for coping with threat and challenge cohered into 2 broad, phenotypic dimensions - hawk and dove - that have been maintained by frequency-dependent selection throughout our ancestral history: Hawk-like strategies are characterized by approach, dominant-negative affect, and activity, whereas dove-like strategies are evidenced by avoidance, inhibition, and vulnerable affect. In turn, we examined the moderating effect of hawk or dove profile membership on children's physiological and psychological adaptation to harsh rearing environments. Participants included 201 2-year-old toddlers and their mothers. Consistent with the Korte model, latent profile analyses extracted 2 profiles that cohered into hawk and dove strategies. Children were classified within hawk or dove profiles and separately examined in a process model of harsh caregiving. As predicted, associations between harsh caregiving practices and children's basal cortisol, parasympathetic nervous system, and sympathetic nervous system activity were moderated by profile membership. In turn, basal physiological levels were differentially predictive of children's psychological adaptation over time. Collectively, findings highlight the potential value of translating the study of evolutionary models to understanding developmental outcomes associated with harsh caregiving.

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A life history approach to understanding the Dark Triad

Melissa McDonald, Brent Donnellan & Carlos David Navarrete
Personality and Individual Differences, forthcoming

Abstract:
Researchers adopting an evolutionary perspective have conceptualized the Dark Triad as an exploitative interpersonal style reflective of a fast life history strategy. However, not all research has supported this claim. We posit that different elements of the constructs associated with the Dark Triad may reflect different life history strategies. Our results indicate that the measures of the Dark Triad and other indicators of life history strategies form two distinct factors: (1) a fast life strategy factor that includes the impulsive antisociality facet of psychopathy, the entitlement/exploitativeness facet of narcissism, Machiavellianism, unrestricted sociosexuality, and aggression, and (2) a slow life strategy factor that includes the fearless dominance facet of psychopathy and both the leadership/authority and grandiose exhibitionism facets of narcissism. These factors differentially correlate with established measures of life history strategy. These findings add to the literature by clarifying how the Dark Triad fits into a life history framework.

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Can an old dog learn (and want to experience) new tricks? Cognitive training increases openness to experience in older adults

Joshua Jackson et al.
Psychology and Aging, forthcoming

Abstract:
The present study investigated whether an intervention aimed to increase cognitive ability in older adults also changes the personality trait of openness to experience. Older adults completed a 16-week program in inductive reasoning training supplemented by weekly crossword and Sudoku puzzles. Changes in openness to experience were modeled across four assessments over 30 weeks using latent growth curve models. Results indicate that participants in the intervention condition increased in the trait of openness compared with a waitlist control group. The study is one of the first to demonstrate that personality traits can change through nonpsychopharmocological interventions.

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Organizing Effects of Testosterone and Economic Behavior: Not Just Risk Taking

Pablo Brañas-Garza & Aldo Rustichini
PLoS ONE, December 2011, e29842

Abstract:
Recent literature emphasizes the role that testosterone, as well as markers indicating early exposure to T and its organizing effect on the brain (such as the ratio of second to fourth finger, 2D:4D), have on performance in financial markets. These results may suggest that the main effect of T, either circulating or in fetal exposure, on economic behavior occurs through the increased willingness to take risks. However, these findings indicate that traders with a low digit ratio are not only more profitable, but more able to survive in the long run, thus the effect might consist of more than just lower risk aversion. In addition, recent literature suggests a positive correlation between abstract reasoning ability and higher willingness to take risks. To test the two hypotheses of testosterone on performance in financial activities (effect on risk attitude versus a complex effect involving risk attitude and reasoning ability), we gather data on the three variables in a sample of 188 ethnically homogeneous college students (Caucasians). We measure a 2D:4D digit ratio, abstract reasoning ability with the Raven Progressive Matrices task, and risk attitude with choice among lotteries. Low digit ratio in men is associated with higher risk taking and higher scores in abstract reasoning ability when a combined measure of risk aversion over different tasks is used. This explains both the higher performance and higher survival rate observed in traders, as well as the observed correlation between abstract reasoning ability and risk taking. We also analyze how much of the total effect of digit ratio on risk attitude is direct, and how much is mediated. Mediation analysis shows that a substantial part of the effect of T on attitude to risk is mediated by abstract reasoning ability.

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Brighten Up: Smiles Facilitate Perceptual Judgment of Facial Lightness

Hyunjin Song et al.
Journal of Experimental Social Psychology, January 2012, Pages 450-452

Abstract:
The metaphoric expression ‘bright smile' may reflect the actual judgment of facial lightness under varying emotional expressions. The present research examined whether people in fact judge smiling faces as perceptually brighter than frowning faces. Four studies demonstrated that participants believed smiling faces were brighter compared to frowning faces in a two-choice task and in an absolute judgment task. The results suggest that emotional expressions (i.e., smiles and frowns) can bias judgments of facial brightness in ways consistent with metaphor. Among other implications, such results suggest that stereotypes about darker-skinned individuals may be attenuated by smiles.

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More Than a Feeling: Discrete Emotions Mediate the Relationship Between Relative Deprivation and Reactions to Workplace Furloughs

Danny Osborne, Heather Smith & Yuen Huo
Personality and Social Psychology Bulletin, forthcoming

Abstract:
A key insight from investigations of individual relative deprivation (IRD) is that people can experience objective disadvantages differently. In this study, university faculty (N = 953) who reported greater IRD in response to a mandatory furlough (i.e., involuntary pay reductions) were more likely to (a) voice options designed to improve the university (voice), (b) consider leaving their job (exit), and (c) neglect their work responsibilities (neglect), but were (d) less likely to express loyalty to the university (loyalty). Consistent with the emotions literature, (a) anger mediated the relationship between IRD and voice, (b) fear between IRD and exit, (c) sadness between IRD and neglect, and (d) gratitude between IRD and loyalty. IRD was inversely associated with self-reported physical and mental health via these different emotional pathways. These results show how discrete emotions can explain responses to IRD and, in turn, contribute to organizational viability and the health of its members.

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How does the social environment ‘get into the mind'? Epigenetics at the intersection of social and psychiatric epidemiology

Satoshi Toyokawa et al.
Social Science & Medicine, January 2012, Pages 67-74

Abstract:
The social environment plays a considerable role in determining major psychiatric disorders. Emerging evidence suggests that features of the social environment modify gene expression independently of the primary DNA sequence through epigenetic processes. Accordingly, dysfunction of epigenetic mechanisms offers a plausible mechanism by which an adverse social environment gets "into the mind" and results in poor mental health. The purpose of this review is to provide an overview of the studies suggesting that epigenetic changes introduced by the social environment then manifest as psychological consequences. Our goal is to build a platform to discuss the ways in which future epidemiologic studies may benefit from including epigenetic measures. We focus on schizophrenia, major depressive disorder, post-traumatic stress disorder, anorexia nervosa, and substance dependence as examples that highlight the ways in which social environmental exposures, mediated through epigenetic processes, affect mental health.

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Extraversion Is Linked to Volume of the Orbitofrontal Cortex and Amygdala

Henk Cremers et al.
PLoS ONE, December 2011, e28421

Abstract:
Neuroticism and extraversion are personality factors associated with the vulnerability for developing depression and anxiety disorders, and are possibly differentially related to brain structures implicated in the processing of emotional information and the generation of mood states. To date, studies on brain morphology mainly focused on neuroticism, a dimension primarily related to negative affect, yielding conflicting findings concerning the association with personality, partially due to methodological issues and variable population samples under study. Recently, extraversion, a dimension primarily related to positive affect, has been repeatedly inversely related to with symptoms of depression and anxiety disorders. In the present study, high resolution structural T1-weighted MR images of 65 healthy adults were processed using an optimized Voxel Based Morphometry (VBM) approach. Multiple regression analyses were performed to test for associations of neuroticism and extraversion with prefrontal and subcortical volumes. Orbitofrontal and right amygdala volume were both positively related to extraversion. Extraversion was differentially related to volume of the anterior cingulate cortex in males (positive) and females (negative). Neuroticism scores did not significantly correlate with these brain regions. As extraversion is regarded a protective factor for developing anxiety disorders and depression and has been related to the generation of positive affect, the present results indicate that the reduced likelihood of developing affective disorders in individuals high on extraversion is related to modulation of emotion processing through the orbitofrontal cortex and the amygdala.

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Humble persons are more helpful than less humble persons: Evidence from three studies

Jordan Paul LaBouff et al.
Journal of Positive Psychology, January/February 2012, Pages 16-29

Abstract:
Connections between humility and other prosocial qualities led us to develop a humility-helpfulness hypothesis. In three studies, humble persons were more helpful than less humble persons. In Study 1, participants (n = 117) completed self-report measures of humility, the Big Five, and helpfulness. In Study 2, participants (n = 90) completed an implicit measure of humility and were presented with an unexpected opportunity to help someone in need. In Study 3, participants (n = 103) completed self-report and implicit measures of humility and were presented a similar helping opportunity. Humility and helpfulness correlated positively when personality and impression management were controlled. Humble participants helped more than did less humble participants even when agreeableness and desirable responding were statistically controlled. Further, implicit humility uniquely predicted helping behavior in an altruistic motivation condition.

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Facial expressions as honest signals of cooperative intent in a one-shot anonymous Prisoner's Dilemma game

Lawrence Ian Reed, Katharine Zeglen & Karen Schmidt
Evolution and Human Behavior, forthcoming

Abstract:
Previous research has posited that facial expressions of emotion may serve as honest signals of cooperation. Although findings from several empirical studies support this position, prior studies have not used comprehensive and dynamic measures of facial expression as potential predictors of behaviorally defined cooperation. The authors investigated (a) specific positive and negative facial actions displayed among strangers immediately following verbal promises of commitment within an unrestricted acquaintance period and (b) anonymous, behaviorally defined decisions of cooperation or defection in a one-shot, two-person Prisoner's Dilemma game occurring directly following the acquaintance period. The Facial Action Coding System [Ekman P. & Friesen W.V. (1978). Facial Action Coding System. Palo Alto, CA: Consulting Psychology Press] was used to measure affect-related facial actions. It was found that facial actions related to enjoyment were predictive of cooperative decisions within dyads; additionally, facial actions related to contempt were predictive of noncooperative decisions within dyads. Furthermore, and consistent with previous works, participants were able to accurately predict their partner's decisions following the acquaintance period. These results suggest that facial actions may function as honest signals of cooperative intent. These findings also provide a possible explanation for the association between subjective affective experience and facial expression that advances understanding of cooperative behavior.

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Hanging in the Balance: The Role of Self-Construal Abstractness in Navigating Self-Relevant Uncertainty

Arezou Ghane Cavanaugh & Kate Sweeny
Personality and Social Psychology Bulletin, forthcoming

Abstract:
People inevitably face moments of uncertainty as they await feedback regarding self-relevant life outcomes, but they react to this uncertainty with varying amounts of anxiety. Self-construal abstractness (SCA) may be one key predictor of anxiety in the face of uncertain outcomes. SCA refers to a broad self-concept based on generalizations rather than a detailed, low-level self-concept that is based on specific behaviors or events. The current studies examined SCA and anxiety over self-relevant uncertainty. Studies 1 and 2 measured naturally occurring levels of SCA and found that reflecting on an abstract self-construal buffered people from anxiety when upcoming evaluative feedback was highly self-relevant (Study 1) and immediate (Study 2). Study 3 revealed that SCA is equally effective as a buffer against anxiety when manipulated with a subtle prime. The potential for SCA to serve as the target for anxiety-reduction interventions in uncertain situations is discussed.

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Eyes as windows to the soul: Gazing behavior is related to personality

John Rauthmann et al.
Journal of Research in Personality, forthcoming

Abstract:
Gazing is a fundamental human behavior with important cognitive, affective, motivational, and social underpinnings that is likely to have produced individual differences linking it to major personality traits. If traits play a substantial role in gazing, they should predict eye movement parameters above and beyond stimuli without meaningful and topical information. The current eye-tracking study (N = 242) demonstrated with linear mixed models that personality (Big Five, Behavioral Inhibition System / Behavioral Activation System) predicts number of fixations, mean fixation duration, and dwelling time in two different abstract animations. Specifically, Neuroticism, Extraversion, Openness, and the Behavioral Activation System were related to eye movement parameters. Prospective research in studying links between dispositions and gazing is discussed.

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Postnatal Testosterone Levels and Temperament in Early Infancy

Gerianne Alexander & Janet Saenz
Archives of Sexual Behavior, December 2011, Pages 1287-1292

Abstract:
Recent research showing associations between behavior and postnatal testosterone levels in male infants has suggested that the transient activation of the hypothalamic-pituitary-gonadal axis in early infancy may influence the expression of gender phenotypes in later development (i.e., the postnatal hormone hypothesis). As a further test of the relationship between postnatal hormones and behavior in infancy, we measured digit ratios and salivary testosterone in 76 male and female infants (3-4 months of age) and parents completed the Infant Behavior Questionnaire-Revised, a well-established measure of temperament in the first year of life. Consistent with our earlier findings, there were no significant sex differences in salivary testosterone levels and testosterone levels were unrelated to measures of behavior in female infants. However, in male infants, higher androgen levels predicted greater Negative Affectivity. Further examination of the four scales contributing to the measure of Negative Affectivity showed testosterone levels were a significant predictor of scores on the Distress to Limitations scale, but not of scores on Fear, Sadness, or Reactivity scales. This sex-specific association between salivary testosterone and behavior in infants is consistent with animal research showing higher prenatal androgens associated with typical male development lower the threshold of sensitivity to endogenous testosterone in postnatal life. In sum, these data provide additional support for the postnatal hormone hypothesis and suggest postnatal testosterone levels may influence the development of emotional regulation in male infants.

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Lies, truths, and attachment orientations in late adolescence

Eitan Elaad et al.
Personality and Individual Differences, forthcoming

Abstract:
In this paper we examine the association between adolescents' attachment orientations and their perceived abilities to tell and detect lies and truths. The 121 adolescents who participated in this study (a) self-assessed their abilities to tell and detect lies and truths and (b) completed a measure of attachment orientations (ECR). Results indicated that participants overestimated their truth-related abilities (i.e., truth telling and truth detecting) and their lie detection abilities, but not their lie-telling abilities. Attachment anxiety predicted poor subjective abilities related to lies (i.e., telling and detecting lies) and poor subjective abilities related to delivering messages (i.e., telling lies and truths). Attachment avoidance predicted low self-ratings of truth-telling abilities. This is the first study to link insecure attachment orientations with perceived abilities to tell and detect lies and truths, and the first to link avoidance to lack of self-confidence in delivering truthful messages. The implications of these findings for interpersonal relationships, criminal interrogation, and court litigations are discussed. Suggestions for future studies examining broader implications of the results are offered.

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Genetic Influences on Life Span and Its Relationship to Personality: A 16-Year Follow-Up Study of a Sample of Aging Twins

Miriam Mosing et al.
Psychosomatic Medicine, January 2012, Pages 16-22

Objective: The relationship between personality and life span is not well understood, and no study to date has examined genetic influences underlying this relationship. The present study aimed to explore the phenotypic and genetic relationship between personality and life span, as well as genetic influences on all-cause mortality.

Methods: Prospective community-based study including 3752 twin individuals older than 50 years. Neuroticism, psychoticism, extraversion, and social desirability and pessimism/optimism were measured at baseline using the Revised Eysenck Personality Questionnaire and the Revised Life Orientation Test, respectively. Information on age at death was obtained 16 years after the initial assessment of personality.

Results: Extraversion was inversely related to mortality with the risk of death decreasing 3% per unit increase of the extraversion score. Psychoticism and pessimism were positively related to mortality with a 36% and 39% increase in risk of death per unit increase in the respective personality score. Heritability of life span was 7%. Cross-twin cross-trait hazard ratios (HRs) were only significant for optimism/pessimism in monozygotic (MZ) twins with no significant differences in HRs between MZ and dizygotic twins in all traits; however, there was a trend for slightly higher HRs in MZ compared with dizygotic twins in psychoticism and optimism/pessimism.

Conclusions: Extraversion, psychoticism, and optimism/pessimism are significant predictors of longevity; extraversion is associated with a reduction, and pessimism and psychoticism are associated with an increase in mortality risk. Genetic influences on longevity in Australian twins are very low (7%). Our data also suggest a small, albeit nonsignificant, genetic influence on the relationship of pessimism and psychoticism with life span.

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Life Events as Environmental States and Genetic Traits and the Role of Personality: A Longitudinal Twin Study

Christian Kandler et al.
Behavior Genetics, January 2012, Pages 57-72

Abstract:
The occurrence of many life events is not entirely random but genetically influenced. The current study examined the sources underlying the stability or recurrence of life events and the developmental interplay between personality traits and life events. In a longitudinal study of 338 adult twin pairs we estimated (1) the genetic and environmental sources of continuity in aggregates of life events, (2) the sources through which personality influences the experience of life events, and (3) the sources through which life events influence personality. Unlike personality which showed both genetic and environmental influences on substantial continuity over time, stability of life events was moderate and mainly influenced by genetic factors. Significant associations between personality and life events were specific to certain personality traits and qualitative aspects of life events (controllable positive, controllable negative, and less controllable negative), primarily directional from personality to life events, and basically genetically mediated. Controlled for these genetic associations, we also found some small and basically environmentally mediated effects of life events on personality traits. The results support the concept of genotype-environment correlation as a propulsive mechanism of development.


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