Modeling certainty equivalents for imprecise gambles

We present results from two experiments on the relative importance of, and subjects' differential sensitivity to, vagueness on both probabilities and outcomes. Subjects in these studies made certainty equivalent (CE) judgments for precise and vague gambles. In the first study subjects responded to gain gambles only; in the second they judged both gain and loss gambles. Model-free analyses of the results indicate (a) a higher concern for the precision of the outcomes than that of the probabilities, (b) vagueness seeking for positive outcomes and (c) vagueness avoidance for negative outcomes and (d) no strong modal attitude toward vagueness on the probability dimension. The greater salience of the outcomes can be explained by the nature of the response mode (CEs). The reflection of attitudes towards outcome vagueness in the two domains can be explained by the distinct goals of the DMs in the two cases, which cause them to focus on the highest (most desirable) possible gain or the largest (most dreaded) conceivable loss. We propose and fit a new model of decision making with vaguely specified attributes that generalize the Prospect Theory model for the precise case. The new generalized model combines the two submodels (preference among precise lotteries and effects of vagueness) and allows estimation of the vagueness parameters. These estimated parameters are consistent with, and confirm, the patterns uncovered by the qualitative analysis.     

Bulimic symptoms and body image dissatisfaction in college women: more affected by climate or race?

The authors examined bulimic symptoms and body image dissatisfaction (BID) in a sample of college women. No differences were found in comparisons of bulimic symptoms or BID between Southern and Northern White women, and both groups reported similar levels of awareness and internalization of sociocultural aesthetic standards of appearance. Southeastern Black women reported (a) significantly lower levels of bulimic symptoms in comparison with White women from the North and (b) lower levels of BID in comparison with White women from both Southern and Northern regions. Further, Southeastern Black women were significantly less likely to be aware of and endorse mainstream standards of appearance in comparison with both groups of White women. Findings support the hypothesis that having a positive body image and less susceptibility to mainstream aesthetic standards of appearance may reduce the risk of eating disorder pathology in Black women.     

What Makes A Hero? The Impact of Integrity on Admiration and Interpersonal Judgment

Principled and expedient ideologies affect self-regulation and guide people along divergent ethical paths. A more principled ideology, indicative of higher claimed integrity, involves a greater personal commitment to ethical beliefs, standards, and self-schemas that facilitate positive social activities and help resist the temptation of illicit activities. Two studies showed that differences in reported integrity are related to people's preferences for and judgments of others. Those higher in integrity spontaneously described their heroes as more principled, honest, spiritual, and benevolently oriented toward others (Study 1). In addition, integrity was related to people's evaluations of characters who made ethical or unethical career decisions (Study 2). The judgments of those higher in integrity were greatly influenced by whether or not the decision was ethical but were largely unaffected by the consequences (career success or failure), whereas those lower in integrity were less influenced by whether the decision was ethical and more influenced by the career consequences.     

Cells,circuits, and choices: Social influences on perceptual decision making

Making decisions is an integral part of everyday life. Social psychologists have demonstrated in many studies that humans’ decisions are frequently and strongly influenced by the opinions of others—even in simple perceptual decisions, where, for example, participants have to judge what an image looks like. However, because the effect of other people’s opinions on decision making has remained largely unaddressed by the neuroimaging and neurophysiology literature, we are only beginning to understand how social influence is integrated into the decision-making process. We put forward the thesis that by probing the neurophysiology of social influence with perceptual decisionmaking tasks similar to those used in the seminal work of Asch (1952, 1956), this gap could be remedied. Perceptual paradigms are already widely used to probe neuronal mechanisms of decision making in nonhuman primates. There is also increasing evidence about how nonhuman primates’ behavior is influenced by observing conspecifics. The high spatial and temporal resolution of neurophysiological recordings in awake monkeys could provide insight into where and how social influence modulates decision making, and thus should enable us to develop detailed functional models of the neural mechanisms that support the integration of social influence into the decision-making process.     

Conceptual representations in goal-directed decision making

Emerging evidence suggests that the long-established distinction between habit-based and goal-directed decision-making mechanisms can also be sustained in humans. Although the habit-based system has been extensively studied in humans, the goal-directed system is less well characterized. This review brings to that task the distinction between conceptual and nonconceptual representational mechanisms. Conceptual representations are structured out of semantic constituents (concepts)—the use of which requires an ability to perform some language-like syntactic processing. Decision making—as investigated by neuroscience and psychology—is normally studied in isolation from questions about concepts as studied in philosophy and cognitive psychology. We ask what role concepts play in the “goal-directed” decision-making system. We argue that one fruitful way of studying this system in humans is to investigate the extent to which it deploys conceptual representations.     

Coping with Rejection: Derogating Those Who Choose Us Last

Interpersonal rejection poses a threat to people's identities as competent, desirable individuals. This study examined the possibility that people buffer themselves against the implications of rejection by derogating those who reject them and by concluding that the rejector did not know them well. Participants were led to believe that a team captain had selected them either first or last for a laboratory team, then rated the captain and indicated how well he or she knew them. Results showed that, compared to those who were selected first for the team, participants who were selected last rated the team captains less positively, were less interested in having them as friends, and indicated that the captains knew them less well. Mediational analyses suggested that ratings of the captains were mediated by perceived rejection and that derogation helped to maintain participants' positive affect following rejection.     

Reaping the Rewards of Diversity: The Role of Identity Integration

How does diversity affect individuals and the groups in which they are embedded? This article examines this question using recent theory and research on Identity Integration (II). II refers to an individual's perceptions about whether two distinct social identities, or social groups to which individuals belong, are viewed as compatible (high II) or not (low II). A review of extant research suggests that individuals with high II are better at simultaneously accessing multiple identities and identity‐related knowledge and have improved well‐being and social outcomes. Expanding on this work, we argue that individuals who have higher II, and social collectives that foster II within their members, are more likely to reap the benefits of diversity.     

Predictors of changes in child behaviour following parent management training: Child,context, and therapy factors

This non‐randomised study examined a set of predictive factors of changes in child behaviour following parent management training (PMTO). Families of 331 Norwegian girls (26%) and boys with clinic‐level conduct problems participated. The children ranged in age from 3 to 12 years (M_age = 8.69). Retention rate was 72.2% at post‐assessment. Child‐, parent‐ and therapy‐level variables were entered as predictors of multi‐informant reported change in externalising behaviour and social skills. Behavioural improvements following PMTO amounted to 1 standard deviation on parent rated and ½ standard deviation on teacher rated externalising behaviour, while social skills improvements were more modest. Results suggested that children with higher symptom scores and lower social skills score at pre‐treatment were more likely to show improvements in these areas. According to both parent‐ and teacher‐ratings, girls tended to show greater improvements in externalising behaviour and social skills following treatment and, according to parents, ADHD symptomology appeared to inhibit improvements in social skills. Finally, observed increases in parental skill encouragement, therapists' satisfaction with treatment and the number of hours spent in therapy by children were also positive and significant predictors of child outcomes.     

Assisted reproduction versus spontaneous conception: a comparison of the developmental outcomes in twins

The use of assisted reproductive technology is increasing rapidly. Research, although sparse, has resulted in inconsistent findings as to the developmental prognosis for infants conceived by assisted reproductive techniques such as in vitro fertilization and the use of fertility drugs. In the present study, the authors compared twins who were spontaneously conceived with those who were conceived through assisted reproductive technology. The authors found differences in birth weight and gestational age. Infants conceived by assisted reproductive technology fared worse than did those who were spontaneously conceived. The authors found no differences between the groups in mental development at 24 months of age, but they found evidence of differences in physical development. Implications of the findings are discussed.     

A validity study of the Positive Psychology Protective Profile

The purpose of this study was to conduct an exploratory factor analysis to provide support for the construct validity of the Positive Psychology Protective Profile, a self-report measure based on positive psychology. 985 undergraduates completed the profile, the Beck Depression Inventory, and the College Life Stress Inventory. Scores on the first two factor scores (Positive Outlook, Negative Symptoms) for the profile correlated significantly with scores on depression and stress, whereas scores on the third profile factor (Problem-solving) correlated significantly only with scores on the Beck Depression Inventory. Scores on the Positive Outlook significantly differentiated participants having either chronic illness or recent major illness from those who did not.