When do people cooperate? The neuroeconomics of prosocial decision making

Understanding the roots of prosocial behavior is an interdisciplinary research endeavor that has generated an abundance of empirical data across many disciplines. This review integrates research findings from different fields into a novel theoretical framework that can account for when prosocial behavior is likely to occur. Specifically, we propose that the motivation to cooperate (or not), generated by the reward system in the brain (extending from the striatum to the ventromedial prefrontal cortex), is modulated by two neural networks: a cognitive control system (centered on the lateral prefrontal cortex) that processes extrinsic cooperative incentives, and/or a social cognition system (including the temporo-parietal junction, the medial prefrontal cortex and the amygdala) that processes trust and/or threat signals. The independent modulatory influence of incentives and trust on the decision to cooperate is substantiated by a growing body of neuroimaging data and reconciles the apparent paradox between economic versus social rationality in the literature, suggesting that we are in fact wired for both. Furthermore, the theoretical framework can account for substantial behavioral heterogeneity in prosocial behavior. Based on the existing data, we postulate that self-regarding individuals (who are more likely to adopt an economically rational strategy) are more responsive to extrinsic cooperative incentives and therefore rely relatively more on cognitive control to make (un)cooperative decisions, whereas other-regarding individuals (who are more likely to adopt a socially rational strategy) are more sensitive to trust signals to avoid betrayal and recruit relatively more brain activity in the social cognition system. Several additional hypotheses with respect to the neural roots of social preferences are derived from the model and suggested for future research.     

An empirical typology of perfectionism in early-to-mid adolescents and its relation with eating disorder symptoms

Although the association between perfectionism and eating disorder (ED) symptoms is well-established, debate remains about the relative contribution of two central dimensions of perfectionism, that is, Personal Standards (PS) perfectionism and Evaluative Concerns (EC) perfectionism, in the prediction of ED symptoms. This study used cluster analysis to establish naturally occurring combinations of PS and EC perfectionism in early-to-mid adolescents (N = 656; M age = 13.9 years). Evidence was obtained for four perfectionism profiles: (1) maladaptive perfectionism (high PS and high EC), (2) pure evaluative concerns perfectionism (high EC only), (3) adaptive perfectionism (high PS, low EC), and (4) non-perfectionism (low on both PS and EC). A comparison of participants in these four clusters in terms of ED symptoms suggests that a combination of high personal standards and evaluative concerns (rather than the presence of one of these two dimensions alone) is most strongly related to ED symptoms.     

The reluctance to generalize corrective experiences in chronic low back pain patients: a questionnaire study of dysfunctional cognitions

The present study investigated whether pain catastrophizing and pain-related fear is related to a reluctance to generalize an experience of lesser pain than expected to other similar situations. Eighty-five patients with chronic low back pain (40 males; 45 females; age range=21-63 years) completed a series of vignettes assessing catastrophizing, overgeneralization, personalization and selective abstraction related to general life experiences and to low back pain (LBP) experiences. Three vignettes also assessed the lack of generalization of corrective experiences related to LBP. Our results showed that dysfunctional cognitions related to general life experiences were the strongest predictor of the self-denigration subscale of the Beck Depression Inventory (BDI), whereas only dysfunctional cognitions related to LBP had a unique contribution in the prediction of the somatic and physical function subscale of the BDI. Furthermore, dysfunctional cognitions related to LBP were significantly correlated with interference with daily life due to pain. As predicted, pain catastrophizing and pain-related fear had a unique contribution in predicting the lack of generalization of corrective experiences, over and above sociodemogaphic variables, pain severity and pain duration.     

Effects of varied-stimulus exposure on overpredictions of pain and behavioural performance in low back pain patients

The main objective of the present study was to investigate the benefits of exposure to a variety of movements versus exposure to the same movements on overprediction of pain and behavioural performance on a final behavioural test in a sample of chronic low back pain (CLBP) patients. Eighty-four CLBP patients were requested to perform four behavioural tests. Patients were assigned to two experimental conditions. The final behavioural test was the same for all patients. The first three behavioural tests consisted of three different movements in condition 1 and of three times the same movement in condition 2. During each behavioural test, baseline pain, expected pain and experienced pain were recorded. Furthermore, the peak torque and the variability of the produced muscle strength during the final behavioural test were assessed. Replicating and extending previous research, we found that patients overpredicted pain during a threatening behavioural test. Furthermore, pain-related fear and pain catastrophizing showed to be unique predictors of the peak torque of the final behavioural test. No support was found for our hypothesis that varied exposure facilitates generalization of exposure effects. Possible reasons for the failure to find an advantageous effect of varied-stimulus exposure and ideas for future research are discussed.     

Ego Integrity in the Lives of Older Women: A Follow-Up of Mothers From the Sears,Maccoby, and Levin (1951) Patterns of Child Rearing Study

Ego integrity, Erik Erikson's (E. H. Erikson, 1963) concept of psychological maturity in later life and the pinnacle of 8 stages, has been one of the least studied of all his stage constructs. This paper explores the meaning of ego integrity (as assessed by C. D. Ryff & S. G. Heincke, 1983) in the lives of a sample of older women, by examining the predictors and concomitants of ego integrity (EI), using data from interviews conducted with the same women in 1951 and 1996 and a questionnaire administered in 1996. A 3-step regression model revealed that “identity” assessed in 1951 predicted generativity in 1996; the level of educational attainment and marital status were also significant predictors. In step 2, generativity alone predicted ego integrity, which in turn predicted depression. Ego integrity was associated with higher marital satisfaction in the mothers' lives, both in the past and in the present; it was implicated in better relationships with their adult children, in the mothers' willingness to both give and receive help, and in several dimensions of psychological well-being.     

High self-control predicts good adjustment, less pathology, better grades, and interpersonal success

What good is self‐control? We incorporated a new measure of individual differences in self‐control into two large investigations of a broad spectrum of behaviors. The new scale showed good internal consistency and retest reliability. Higher scores on self‐control correlated with a higher grade point average, better adjustment (fewer reports of psychopathology, higher self‐esteem), less binge eating and alcohol abuse, better relationships and interpersonal skills, secure attachment, and more optimal emotional responses. Tests for curvilinearity failed to indicate any drawbacks of so‐called overcontrol, and the positive effects remained after controlling for social desirability. Low self‐control is thus a significant risk factor for a broad range of personal and interpersonal problems.     

Gender and Truthfulness in Daily Life Situations

To determine the extent to which perceivedgender enters into judgments of credibility indaily-life situations, 46 raters (23 males and 23females matched for age and education) read a set ofaccusations and rated synthetic speakers' audiotapedresponses to the accusations on how believable the maleand female synthetic speakers were. The results suggestthat on the daily-life scenarios posed, both male and female speakers are equally likely to judgefemale speakers to be more credible than male speakers,whether the accusation is deemed to reflect anintentional or negligent act.