Interspecific aggression among female ungulates

Interspecific aggression among captive female ungulates was investigated. Asymmetries in fighting abilities proved to be good predictors of relative levels of aggression between different pairs of species. The resource under dispute also influenced the nature of aggressive encounters. The results of this study were discussed in the light of game theory.     

Footballs Versus Barbies: Childhood Play Activities as Predictors of Sport Participation by Women

The present study examined the extent to which childhood play activities predict future sport participation by women. Eighty-four college women (40 Division III varsity athletes and 44 nonathletes) at a predominantly White liberal arts school in the Southwest completed a questionnaire that measured their adult experiences with sports as well as their childhood play activities. The results revealed that playing with masculine (rather than feminine) toys and games, playing in predominantly male or mixed-gender groups, and being considered a tomboy distinguished between women who later became college athletes and those who did not. These findings suggest that childhood play activities should be considered, along with other agents of socialization (i.e., family, peers, coaches), as important factors in predicting future sport participation by females.     

Modeling homophily over time with an actor-partner interdependence model

Selection and socialization have been implicated in friendship homophily, but the relative contributions of each are difficult to measure simultaneously because of the nonindependent nature of the data. To address this problem, the authors applied a multiple-groups longitudinal actor-partner interdependence model (D. A. Kashy & D. A. Kenny, 2000) for distinguishable dyads to 3 consecutive years of intoxication frequency data from a large community-based sample of Swedish youth. Participants, ranging from 12 to 18 years old (M = 14.35, SD = 1.56) at the start of the study, included 902 adolescents (426 girls and 476 boys) with at least one reciprocated friend during at least one time point and 212 adolescents (84 girls and 128 boys) without reciprocated friends at any time. Similarity estimates indicated strong effects for selection and socialization in friends' intoxication frequency. Over time, younger members of these dyads had less stable patterns of intoxication than older members, largely because younger partners changed their drinking behavior to resemble that of older partners.     

Mexican‐Origin Parents’ Stress and Satisfaction: The Role of Emotional Support

Guided by a process model of parenting and the integrative model, this study examined sources of emotional support (i.e., partner, maternal, paternal) as related to stress and satisfaction resulting from the parenting role in a sample of Mexican‐origin young adult parents who participated in the National Longitudinal Study of Adolescent to Adult Health (Add Health) during Wave IV. Participants were male and female parents (26–35 years of age; 59% female; N = 737) who had children and a partner. Results from structural equation modeling revealed support from mothers as salient; high levels of maternal support were associated with high levels of parenting satisfaction. Tests of indirect effects suggested that parenting satisfaction played an intervening role in the link between maternal support and parenting stress. The pattern of results held across levels of linguistic acculturation but varied by gender. Understanding the mechanisms that predict parenting stress and satisfaction within the Mexican‐origin population may help in the identification of culturally sensitive intervention strategies.     

Differential susceptibility and the early development of aggression: interactive effects of respiratory sinus arrhythmia and environmental quality

The purpose of the current study was to predict the development of aggressive behavior from young children's respiratory sinus arrhythmia (RSA) and environmental quality. In a longitudinal sample of 213 children, baseline RSA, RSA suppression in response to a film of crying babies, and a composite measure of environmental quality (incorporating socioeconomic status and marital adjustment) were measured, and parent-reported aggression was assessed from 18 to 54 months of age. Predictions based on biological sensitivity-to-context/differential susceptibility and diathesis-stress models, as well as potential moderation by child sex, were examined. The interaction of baseline RSA with environmental quality predicted the development (slope) and 54-month intercept of mothers' reports of aggression. For girls only, the interaction between baseline RSA and environmental quality predicted the 18-month intercept of fathers' reports. In general, significant negative relations between RSA and aggression were found primarily at high levels of environmental quality. In addition, we found a significant Sex × RSA interaction predicting the slope and 54-month intercept of fathers' reports of aggression, such that RSA was negatively related to aggression for boys but not for girls. Contrary to predictions, no significant main effects or interactions were found for RSA suppression. The results provide mixed but not full support for differential susceptibility theory and provide little support for the diathesis-stress model.     

Linking sight and sound: fMRI evidence of primary auditory cortex activation during visual word recognition

We describe two studies that used repetition priming paradigms to investigate brain activity during the reading of single words. Functional magnetic resonance images were collected during a visual lexical decision task in which nonword stimuli were manipulated with regard to phonological properties and compared to genuine English words. We observed a region in left-hemisphere primary auditory cortex linked to a repetition priming effect. The priming effect activity was observed only for stimuli that sound like known words; moreover, this region was sensitive to strategic task differences. Thus, a brain region involved in the most basic aspects of auditory processing appears to be engaged in reading even when there is no environmental oral or auditory component.     

Interpersonal Violence Victimization and Sexual Harassment: A Prospective Study of Revictimization

This study examined associations between past interpersonal victimization (including both child and adult victimization) and sexual harassment (SH); and it examined intervening and moderating variables of the association of past victimization with SH, including posttraumatic stress symptoms (PTSS) and job-gender context. In addition, we examined an alternative hypothesis for revictimization that abuse survivors are hyper-sensitive to perceptions of sexual harassment. Employed women residing in Kentucky (U.S.) who had received an order of protection from a male partner and who were followed-up 12 months later (n?=?445, 78 % White, mean age?=?31.98, SD?=?8.60) were selected for this analysis. SH experienced between baseline and follow-up interviews was associated with baseline assessments of child nonsexual assault experiences (r?=?0.24, p?<?0.001) and intimate partner violence victimization (r?=?0.20, p?<?0.000), demonstrating a revictimization effect. PTSS mediated the relationship between child sexual assault, child nonsexual assault and subsequent SH. Further, working in a job with a male supervisor or in a male-dominated workgroup increased associations between child nonsexual abuse and subsequent SH. No support was found for the hyper-sensitivity hypothesis. Findings are consistent with prior research that identifies sexual harassment as a form of interpersonal violence that mental health and victim service providers and researchers should include in their assessment and treatment strategies. Employers should also understand that working in male-dominated work environments compound the risk of sexual harassment for those with prior abuse histories and should be vigilant to reducing these risks.