An economic perspective on the Reinforcement Sensitivity Theory of personality

Reinforcement Sensitivity Theory postulates personality factors of ‘reward sensitivity’ and ‘punishment sensitivity’ linked to neural systems that control approach and avoidance, respectively. In contrast, behavioural economics distinguishes gain (‘reward’) and loss (‘punishment’) valuation systems that are orthogonal to approach/avoidance behaviour. We combined gain and loss with both their presentation and omission and found evidence for separate gain valuation, loss valuation, approach, and avoidance systems. This suggests that it is possible to integrate valuation/input and behaviour/output views of ‘reward’ and ‘punishment’ in a way that may be of use to both personality theory and economics and so forge closer links between these two major perspectives on decision-making and behaviour.     

Understanding cooperation in the Prisoner’s Dilemma game

In the standard one-shot Prisoner’s Dilemma game, participants often choose to cooperate, when the optimal strategy is to defect. This puzzling finding has attracted considerable interest both in terms of possible computational frameworks for modeling human judgment, but also regarding the more general debate of human altruism. In this research, we ask how much of human behavior in this task can be explained by a putative bias for cooperative behavior and whether this, in turn, is influenced by personality. We compared performance on the standard task with performance on a matched neutral one; we manipulated the optimal strategy (defect or cooperate); and we manipulated the amount of payoff for responding optimally. Results revealed little evidence for a bias for cooperative behavior, but significant associations with the personality factors of Behavioural Activation System (BAS) Reward Responsivity and Agreeableness were found. These findings are discussed in terms of the attempt to explain judgment in one-shot, Prisoner’s Dilemma tasks with statistical or probabilistic models.     

Personality,creativity and latent inhibition

The current study set out to investigate the relationship between creativity, multi‐dimensional schizotypy and personality more generally. This was achieved by analysing scores on a range of personality scales and measures of creativity, where it was found that the creativity measures were more closely related to asocial‐schizotypy than positive‐schizotypy. The study also sought to test Eysenck's prediction ( 1993 , 1995 ) that, given the putative relationship between creativity and psychosis‐proneness, high psychosis‐prone scoring individuals and high creativity scoring individuals would demonstrate the same cognitive style of ‘overinclusiveness’ on latent inhibition. However, the results failed to demonstrate any evidence of a shared ‘widening of the associative horizon’ between high creativity and high psychosis‐prone scorers. The findings are discussed in relation to multi‐dimensional schizotypy. Copyright © 2006 John Wiley & Sons, Ltd.     

Personality-performance correlations at work: Individual and aggregate levels of analyses

In the occupational community, there is a widespread faith in the utility of personality assessment for selection, development, etc. This faith has been immune to arguments, supported by empirical evidence, regarding the poor correlation between personality and performance in the workplace (these correlations rarely exceed the 0.2–0.3 level). The difference between perception of utility and the actual empirical reality is large. We investigated one possible source of this perceived-actual discrepancy. In two separate samples, we compared the magnitude of validity coefficients from individual and aggregate (i.e. organizational) levels. Our results indicated that strong actual personality-performance correlations exist at the aggregate level of analysis, but not at the individual level of analysis. We suggest that this aggregate-individual correlation discrepancy may, in part at least, account for the perceived-actual discrepancy noted above. We conclude that the continued faith in personality testing in the workplace may be a consequence of test users' sensitivity to actual aggregate level personality-performance correlations. However, we warn of the danger of drawing inferences from aggregate level correlations when making decisions about individuals, and point out the statistical artefacts that may account for some of the magnitude increase in aggregate level correlations. Several foci for further research are indicated.     

Throwing light on the dark side of personality: Reinforcement sensitivity theory and primary/secondary psychopathy in a student population

In a student sample, we examined two major issues in relation to primary/secondary subtypes of psychopathy and the reinforcement sensitivity theory of personality: the roles played by (a) fear (related to the fight-flight-freeze system, FFFS) and anxiety (related to the behavioural inhibition system, BIS), and (b) different aspects of the behavioural approach system (BAS). Largely consistent with Corr’s (2010a) proposal concerning the neuropsychological deficits associated with the psychoticism-psychopathy continuum, results confirmed that low BIS activity was associated with both primary and secondary psychopathy; whereas low FFFS activity was associated with only primary psychopathy. In relation to the BAS, reward sensitivity and drive were positively related to primary psychopathy; whereas Fun Seeking was negatively related to primary psychopathy but positively related to secondary psychopathy. These results represent a more nuanced picture of FFFS/BIS/BAS and dispositional psychopathy in a student sample. Specifically, they challenge the view that low BIS is preferentially associated with primary psychopathy and a high BAS is preferentially associated with secondary psychopathy. Further work is needed to confirm that these findings extend to clinical and forensic psychopathy populations.     

The role of neuroticism in startle reactions to fearful and disgusting stimuli

It has frequently been observed that negative moods potentiate the startle reflex to unexpected, threatening stimuli. However, recent work from our laboratory suggests that this effect relates primarily to the emotion of fear or anxiety, while stimuli which evoke powerful feelings of disgust can in some circumstances inhibit the startle reflex. In this study we reanalyse data from 42 subjects in whom eye-blink amplitudes to an auditory probe were measured whilst viewing emotionally arousing film clips. Classifying the negative film clips into separate categories of “frightening” vs “disgusting” revealed a previously undetected interaction with EPQ Neuroticism. High N subjects showed greater startle reactions than low N subjects under fearful conditions but low N subjects showed greater startle when disgust was evoked. This suggests that Neuroticism may increase vigilance where evasive action is possible but promote emotional blunting when escape is not an option.     

Attention-Deficit/Hyperactivity Disorder symptoms in an adult sample: Associations with Cloninger’s temperament and character dimensions

Relationships between C.R. Cloninger’s temperament and character dimensions and the Attention-Deficit/Hyperactivity Disorder (ADHD) symptoms of inattention (IA) and hyperactivity/impulsivity (HI) were examined in 231 adults from the general population. Regression analyses that predicated overall ADHD, IA and HI by the seven temperament/character dimensions revealed: IA was predicted positively by Harm Avoidance and negatively by Self-Directedness; HI was predicted positively by Persistence; and overall ADHD was predicted negatively by Self-Directedness. These findings are also interpreted in terms of current theories of ADHD, and the related original and revised versions of Gray’s reinforcement sensitivity theory (RST) of personality.     

Families, Gender Relations and Social Change in Brazil: Practices, Discourse, Policy

We discuss three different areas in which policies on gender and the family have been debated and formulated in Brazil, revealing both the forces of change and the many contradictions that are at work within this society today. After a brief look at the historical vicissitudes of families and family life in Brazil, as representations and as forms of social organization, we come to our more immediate context: the re-democratization processes that engulfed Brazilian society as of the 1980s and the social actors generated therein. Issues relating to gender and sexuality become increasingly visible on the broad political agenda that, notwithstanding national specificities, also converges with social, political and cultural trends emerging all over the world in the latter decades of the twentieth century. The three specific issues we discuss here—the Maria da Penha Law on domestic violence, efforts regarding the legalization of abortion and recent debates that have emerged around a bill introduced to give legal status to same-sex relationships—provide testimony of a society characterized by tensions between mechanisms sustaining restrictive definitions of family, linked to male dominance, heterosexism and hierarchical gender roles, and those that push toward more egalitarian, diverse and democratic family relations.