The roles of aggressive and affiliative behaviors in resource control: A behavioral ecological perspective

Extant literature in developmental psychology has documented the co-occurrence of aggressive and affiliative behaviors with various measures of social dominance. While these findings have been taken as evidence for the functional value of aggression, they have not been integrated into a more general theoretical frame accounting for contextual variation. In this paper the literature on aggression, agonism, affiliation, and social dominance is reviewed in light of behavioral ecological theory suggesting that different forms of competition (scramble and contest) determine, respectively, the use of affiliative and aggressive strategies. Results generally support the hypotheses advanced by this theory. In order to further integrate these findings suggestions for the study sequences of behavior, where reconciliations follow aggression, are made.     

Sympathetic arousal to a vestibular stressor in high and low hostile men

The aim of the present experiment was to extend the literature on hostility and a cerebral systems based model of sympathetic arousal to a vestibular-based stress. Several authors have concluded that autonomic stress reactivity in high hostile individuals must be interpersonally based, whereas healthy vestibular system functioning does not depend on interpersonal features. Utilizing a vestibular activation paradigm, skin conductance levels of 15 high hostile and 15 low hostile men were recorded after brief passive rotation about the vertical neuroaxis. It was expected that hostile individuals would exhibit higher skin conductance levels after rotation compared with low hostile individuals. The results confirmed expectations of heightened sympathetic tone among high hostiles subsequent to vestibular stress. Overall, the findings are interpreted to support a cerebral model of frontal region capacity limitation for regulation of vestibular stress that is independent of psychosocial mechanisms.     

Object-based selection in the Baylis and Driver (1993) paradigm is subject to space-based attentional modulation

Three experiments re-examined Baylis and Driver's (1993) strong evidence for object-based selection, that making relative apex location judgments is harder between two objects than within a single object, with object (figure-ground) segmentation determined solely by color-based perceptual set. Using variations of the Baylis and Driver paradigm, the experiments replicated a two-object cost. However, they also showed a large part of the two-object cost to be attributable to space-based factors, though there remained an irreducible cost consistent with 'true' object-based selection.     

Children’s Gender–Emotion Stereotypes in the Relationship of Anger to Sadness and Fear

Children’s perceptions of the emotional reactions of same- and different-sex characters in stories containing ambiguous and unambiguous emotional contexts were examined. According to the Parallel-Constraint-Satisfaction Theory (Kunda and Thagard. Psychological Review, 103, 284–308, 1996), stereotypes are more likely to be utilized in ambiguous contexts, defined here as those likely to elicit multiple emotional responses. Seventy suburban U.S. preschoolers were read vignettes describing boys or girls in ambiguous or unambiguous emotion-inducing events and reported how the vignette characters were feeling. Results suggest that the perceptions of participants were more likely to reflect gender–emotion stereotypes (e.g. perceiving males as angry and females as sad) in ambiguous contexts than in unambiguous contexts. Results are discussed in terms of children’s emerging understanding of gender–emotion stereotypes.     

Prevalence of Rape Myths in Headlines and Their Effects on Attitudes Toward Rape

The present research investigated the prevalence and effects of rape myths in newspaper headlines. In study 1, a content analysis of online news headlines from US media (N?=?555) surrounding the 2003–2004 Kobe Bryant sexual assault case showed that 10% endorsed a rape myth. In study 2, students at a mid-sized university in the mid-western USA (N?=?154) read headlines endorsing or not endorsing rape myths. Male participants exposed to myth-endorsing headlines were (a) less likely to think Bryant was guilty than those exposed to non-myth headlines, (b) more likely to hold rape-supportive attitudes than those exposed to non-myth headlines, and (c) more likely to hold rape-supportive attitudes than were female participants exposed to myth-endorsing headlines.     

A Longitudinal Analysis of Psychiatric Severity upon Outcomes Among Substance Abusers Residing in Self-Help Settings

A longitudinal analysis of psychiatric severity was conducted with a national sample of recovering substance abusers living in Oxford Houses, which are self-run, self-help settings. Outcomes related to residents' psychiatric severity were examined at three follow-up intervals over one year. Over time, Oxford House residents with high versus low baseline psychiatric severity reported significantly more days using psychiatric medication, decreased outpatient psychiatric treatment, yet no significant differences for number of days abstinent and time living in an Oxford House. These findings suggest that a high level of psychiatric severity is not an impediment to residing in self-run, self-help settings such as Oxford House among persons with psychiatric comorbid substance use disorders.     

Distressed Mothers and Their Infants Use a Less Efficient Timing Mechanism in Creating Expectancies of Each Other’s Looking Patterns

The prediction of events and the creation of expectancies about their time course is a crucial aspect of an infant's mental life, but temporal mechanisms underlying these predictions are obscure. Scalar timing, in which the ratio of mean durations to their standard deviations is held constant, enables a person to use an estimate of the mean for its standard deviation. It is one efficient mechanism that may facilitate predictability and the creation of expectancies in mother-infant interaction. We illustrate this mechanism with the dyadic gaze rhythm of mother and infant looking at and looking away from each other's faces. Two groups of Hi- and Lo-Distress mothers were created using self-reported depression, anxiety, self-criticism and childhood experiences. Lo-Distress infants (controls) used scalar timing 100% of the time, about double that of Hi-Distress infants. Lo-Distress mothers used scalar timing about nine times as much as Hi-Distress mothers. The diminished use of scalar timing patterns in Hi-Distress mothers and infants may make the anticipation of each other's gaze patterns more difficult for both partners.     

Executive Functions in Preschool Children with Aggressive Behavior: Impairments in Inhibitory Control

The question whether executive function (EF) deficits in children are associated with conduct problems remains controversial. Although the origins of aggressive behavior are to be found in early childhood, findings from EF studies in preschool children with aggressive behavior are inconsistent. The current study aimed to investigate whether preschool children with aggressive behavior show impairments in EF. From a population-based sample, 82 preschool children who were showing aggressive behavior as indicated by scores at or above the 93rd percentile on the Aggressive Behavior Scale of the CBCL 1 1/2-5 were selected. These children with aggressive behavior were matched on IQ to a group of typically developing control children (N = 99). Six neuropsychological tasks were administered to assess set shifting, inhibition, working memory and verbal fluency. A factor analysis was conducted which yielded one clear factor: inhibition. Aggressive preschool children showed poorer performance on this inhibition factor than control children and boys performed worse on this factor than girls. This association between aggressive behavior and inhibition deficits was maintained after controlling for attention problems. In addition, gender differences in all EFs measured were found with boys exhibiting more impairment in EF than girls. These findings demonstrate that preschool children with aggressive behavior show impairments in inhibition, irrespective of attention problems.     

Is Parental Knowledge of their Adolescent Offspring’s Whereabouts and Peer Associations Spuriously Associated with Offspring Delinquency?

Recent studies suggest that most of what parents know about their adolescent offspring's whereabouts and companions is the result of youth disclosure, rather than information gained through active parental monitoring. This raises the possibility that parental knowledge is spuriously correlated with youth delinquency solely because the most delinquent youth disclose the least information to parents (because they have the most to hide). We tested this spurious association hypothesis using prospective data on offspring of a nationally representative sample of US women, controlling demographic and contextual covariates. In separate analyses, greater parental knowledge of their offspring's peer associations at both 12-13 years and at 14-15 years was associated with lower odds of being in the top 1 standard deviation of youth-reported delinquency at 16-17 years, controlling for delinquency at the earlier ages. The extent to which parents set limits on activities with peers at 14-15 years did not mediate or moderate the association between parental knowledge and delinquency, but it did independently predict future delinquency among adolescents living in high-risk neighborhoods. This suggests that the association between parental knowledge and future delinquency is not solely spurious; rather parental knowledge and limit setting are both meaningful predictors of future delinquency.     

Survey and behavioral measurements of interpersonal trust

Although many studies treat trust as a situational construct, individual differences can be used to study and predict trusting behavior. We report two studies, the first showing the psychometric properties of a new trust inventory (the Propensity to Trust Survey or PTS), the second study validating this inventory using the standard economic task, the Investment Game. The first study utilized online survey data (N > 8000) to show that the PTS scales were reliable and measured broad constructs related to Big Five personality domains. Trust was related to extraversion and negative neuroticism, and trustworthiness was related to agreeableness and conscientiousness. The second study (N = 90) validated the PTS trust scale as a predictor of behavior in the Investment Game. These findings are evidence that trust and trustworthiness are compound personality traits, and that PTS scales are preferable to general Big Five measures for predicting trusting behavior.