Reactions to Media Violence: It’s in the Brain of the Beholder

Abstract:

Media portraying violence is part of daily exposures. The extent to which violent media exposure impacts brain and behavior has been debated. Yet there is not enough experimental data to inform this debate. We hypothesize that reaction to violent media is critically dependent on personality/trait differences between viewers, where those with the propensity for physical assault will respond to the media differently than controls. The source of the variability, we further hypothesize, is reflected in autonomic response and brain functioning that differentiate those with aggression tendencies from others. To test this hypothesis we pre-selected a group of aggressive individuals and non-aggressive controls from the normal healthy population; we documented brain, blood-pressure, and behavioral responses during resting baseline and while the groups were watching media violence and emotional media that did not portray violence. Positron Emission Tomography was used with [18F]fluoro-deoxyglucose (FDG) to image brain metabolic activity, a marker of brain function, during rest and during film viewing while blood-pressure and mood ratings were intermittently collected. Results pointed to robust resting baseline differences between groups. Aggressive individuals had lower relative glucose metabolism in the medial orbitofrontal cortex correlating with poor self-control and greater glucose metabolism in other regions of the default-mode network (DMN) where precuneus correlated with negative emotionality. These brain results were similar while watching the violent media, during which aggressive viewers reported being more Inspired and Determined and less Upset and Nervous, and also showed a progressive decline in systolic blood-pressure compared to controls. Furthermore, the blood-pressure and brain activation in orbitofrontal cortex and precuneus were differentially coupled between the groups. These results demonstrate that individual differences in trait aggression strongly couple with brain, behavioral, and autonomic reactivity to media violence which should factor into debates about the impact of media violence on the public.

Source: PLOS One

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Is happiness good for your personality? Concurrent and prospective relations of the Big Five with subjective well-being

Abstract:

OBJECTIVE: The present research examined longitudinal relations of the Big Five personality traits with three core aspects of subjective well-being: life satisfaction, positive affect, and negative affect.

METHOD: Latent growth models and autoregressive models were used to analyze data from a large, nationally representative sample of 16,367 Australian residents. RESULTS: Concurrent and change correlations indicated that higher levels of subjective well-being were associated with higher levels of Extraversion, Agreeableness, and Conscientiousness, and with lower levels of Neuroticism. Moreover, personality traits prospectively predicted change in well-being, and well-being levels prospectively predicted personality change. Specifically, prospective trait effects indicated that individuals who were initially extraverted, agreeable, conscientious, and emotionally stable subsequently increased in well-being. Prospective well-being effects indicated that individuals with high initial levels of well-being subsequently became more agreeable, conscientious, emotionally stable, and introverted.

CONCLUSIONS: These findings challenge the common assumption that associations of personality traits with subjective well-being are entirely, or almost entirely, due to trait influences on well-being. They support the alternative hypothesis that personality traits and well-being aspects reciprocally influence each other over time.

Source: Journal of Personality [via Colby Personality Lab]

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Big Five Personality Traits Reflected in Job Applicants' Social Media Postings

Abstract:

Job applicants and incumbents often use social media for personal communications allowing for direct observation of their social communications “unfiltered” for employer consumption. As such, these data offer a glimpse of employees in settings free from the impression management pressures present during evaluations conducted for applicant screening and research purposes. This study investigated whether job applicants' (N=175) personality characteristics are reflected in the content of their social media postings. Participant self-reported social media content related to (a) photos and text-based references to alcohol and drug use and (b) criticisms of superiors and peers (so-called “badmouthing” behavior) were compared to traditional personality assessments. Results indicated that extraverted candidates were prone to postings related to alcohol and drugs. Those low in agreeableness were particularly likely to engage in online badmouthing behaviors. Evidence concerning the relationships between conscientiousness and the outcomes of interest was mixed.

Source: Cyberpsychology, Behavior, and Social Networking.

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Narcissistic CEOs and Executive Compensation

Abstract:

Narcissism is characterized by traits such as dominance, self-confidence, a sense of entitlement, grandiosity, and low empathy. There is growing evidence that individuals with these characteristics often emerge as leaders, and that narcissistic CEOs may make more impulsive and risky decisions. We suggest that these tendencies may also affect how compensation is allocated among top management teams. Using employee ratings of personality for the CEOs of 32 prominent high-technology firms, we investigate whether more narcissistic CEOs have compensation packages that are systematically different from their less narcissistic peers, and specifically whether these differences increase the longer the CEO stays with the firm. As predicted, we find that more narcissistic CEOs who have been with their firm longer receive more total direct compensation (salary, bonus, and stock options), have more money in their total shareholdings, and have larger discrepancies between their own (higher) compensation and the other members of their team.

 Source: Working Paper Series, Institute for Research on Labor and Employment, UC Berkeley [via eScholarship Repository]

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Personality, Gender, and Age in the Language of Social Media: The Open-Vocabulary Approach

Abstract:

We analyzed 700 million words, phrases, and topic instances collected from the Facebook messages of 75,000 volunteers, who also took standard personality tests, and found striking variations in language with personality, gender, and age. In our open-vocabulary technique, the data itself drives a comprehensive exploration of language that distinguishes people, finding connections that are not captured with traditional closed-vocabulary word-category analyses. Our analyses shed new light on psychosocial processes yielding results that are face valid (e.g., subjects living in high elevations talk about the mountains), tie in with other research (e.g., neurotic people disproportionately use the phrase ‘sick of’ and the word ‘depressed’), suggest new hypotheses (e.g., an active life implies emotional stability), and give detailed insights (males use the possessive ‘my’ when mentioning their ‘wife’ or ‘girlfriend’ more often than females use ‘my’ with ‘husband’ or 'boyfriend’). To date, this represents the largest study, by an order of magnitude, of language and personality.

Source: PLoS ONE 8(9): e73791. doi:10.1371/journal.pone.0073791
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Big Five Personality Traits Reflected in Job Applicants' Social Media Postings

Abstract:

Job applicants and incumbents often use social media for personal communications allowing for direct observation of their social communications “unfiltered” for employer consumption. As such, these data offer a glimpse of employees in settings free from the impression management pressures present during evaluations conducted for applicant screening and research purposes. This study investigated whether job applicants' (N=175) personality characteristics are reflected in the content of their social media postings. Participant self-reported social media content related to (a) photos and text-based references to alcohol and drug use and (b) criticisms of superiors and peers (so-called “badmouthing” behavior) were compared to traditional personality assessments. Results indicated that extraverted candidates were prone to postings related to alcohol and drugs. Those low in agreeableness were particularly likely to engage in online badmouthing behaviors. Evidence concerning the relationships between conscientiousness and the outcomes of interest was mixed.

Source: Cyberpsychology, Behavior, and Social Networking.

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