Relation of intimate partner violence to salivary cortisol among couples expecting a first child

Despite advances in understanding the role that several physiological systems play in the occurrence of general violence, little progress has been made toward understanding biological correlates of intimate partner violence (IPV). We explored involvement of one physiological system, the hypothalamic-pituitary-adrenal (HPA) axis. Among 137 heterosexual couples expecting a first child, baseline level of HPA activity-assessed via salivary cortisol collected before a couple conflict discussion-was linked to both men's and women's violence perpetration. HPA reactivity to the conflict bout did not show an independent association with IPV. However, persisting elevation in men's, and down-regulation in women's, HPA activity during a further recovery period was linked to men's violence perpetration.     

A Comparison of Eating Disorder Symptomatology, Role Concerns, Figure Preference and Social Comparison Between Women Who Have Attended Single Sex and Coeducational Schools

This study sought to examine the effect of high school gender composition on eating disorder symptomatology and attitudes of female Australian university students. We compared female students who had previously attended single sex (n?=?52) or coeducational (n?=?43) high schools on measures of eating disorder symptomatology, role concerns, figure preference and social comparison so as to examine the effect of high school gender composition on these measures. Importantly, the groups compared here were not significantly different in age, body mass index, socioeconomic status, or whether they had previously sought advice about their weight. Contrary to predictions based on previous research, there were no significant differences between the groups on eating disorder symptomatology, role concern, or social comparison measures. However, students who had previously attended single sex schools endorsed significantly thinner figure preferences overall, suggesting that school environment was an important cultural factor in the development of aspiration towards a thin idea. Additionally, both groups perceived their current figure to be larger than the figure they perceived as most attractive. Our findings provide mixed support for the notion that high school gender composition impacted on the eating-related behaviour and attitudes of university students. Methodological differences that may account for the discrepancies between the findings of the current study and those of earlier work are discussed. Further research including longitudinal studies that employ larger sample sizes is required to clarify these findings.     

Risk factors of attempted suicide in bipolar disorder

Suicide rates of bipolar patients are among the highest of any psychiatric disorder, and improved identification of risk factors for attempted and completed suicide translates into improved clinical outcome. Factors that may be predictive of suicidality in an exclusively bipolar population are examined. White race, family suicide history, and history of cocaine abuse were predictive of suicidal histories. Gender, nicotine use, medical comorbidity, and history of alcohol and other drug abuse were not, although a trend was noted for a history of benzodiazepine abuse. Attempts, although less common among African Americans, were equally as violent. Likewise, attempts were as violent among females as males, in distinction to general population studies.     

Why Do Parents Seek Help When Their Children’s Behavior Is Within Normative Levels?

The purpose of this study was to address the following question: Why do parents first seek help with parenting when they report their child’s disruptive behaviors are within normative levels? Two groups were selected for study from a sample of 91 parents of 3- to 6-year-olds who sought help with parenting: Parents reporting disruptive behavior problems in the normative range (n?=?22) or above a clinical cutoff (n?=?19). Logistic regression was used to examine two competing hypotheses about family variables which may account for why parents seek help when reporting normative levels of disruptive behaviors: Alternative family stress (i.e., high levels of family stress other than child disruptive behavior) and parent enhancement and validation (i.e., enhance and validate parenting although child behavior is in normal range). No support emerged for the alternative family stress hypothesis whereas multiple indicators (better use of disciplinary strategies, seeking services for a first born child, and being more highly educated) provided support for the parent enhancement and validation hypothesis.     

Cognitive-behavioural health-promotion intervention increases fruit and vegetable consumption and physical activity among South African adolescents: a cluster-randomised controlled trial

Rates of chronic diseases are high among Black South Africans but few studies have tested cognitive-behavioural health-promotion interventions to reduce this problem. We tested the efficacy of such an intervention among adolescents in a cluster-randomised controlled trial. We randomly selected 9 of 17 matched pairs of schools and randomised one school in each pair to the cognitive-behavioural health-promotion intervention designed to encourage health-related behaviours and the other to a human immunodeficiency virus (HIV)/sexually transmitted disease (STD) risk-reduction intervention that served as the control. Interventions were based on social cognitive theory, the theory of planned behaviour and qualitative data from the target population. Data collectors, blind to participants' intervention, administered confidential assessments at baseline and 3, 6 and 12 months post-intervention. Primary outcomes were fruit and vegetable consumption and physical activity. Participants were 1057 grade 6 learners (mean age = 12.4 years), with 96.7% retained at 12-month follow-up. Generalised estimating equations revealed that averaged over the follow-ups, a greater percentage of health-promotion intervention participants than HIV/STD control participants met 5-a-Day fruit and vegetable and physical activity guidelines. The intervention also increased health-promotion knowledge, attitude and intention, but did not decrease substance use or substance-use attitude and intention. The findings suggest that theory based and contextually appropriate interventions may increase health behaviours among young adolescents in sub-Saharan Africa.     

When Do Scientific Explanations Compete? Steps Toward a Heuristic Checklist

It's not uncommon for scientists to give different explanations of the same phenomenon, but we currently lack clear guidelines for deciding whether to treat such accounts as competitors. This article discusses how science studies can help create tools and guidelines for thinking about whether explanations compete. It also specifies how one family of discourse rules enables there to be differing accounts that appear to compete but don't. One hopes that being more aware of the linguistic mechanisms making compatible accounts appear to compete will prevent people from wasting resources trying to show which account is right.     

Phantom Behavioral Assimilation Effects: Systematic Biases in Social Comparison Choice Studies

ABSTRACT Consistent with social comparison theory (SCT), Blanton, Buunk, Gibbons, and Kuyper (1999) and Huguet, Dumas, Monteil, and Genestoux (2001) found that students tended to choose comparison targets who slightly outperformed them (i.e., upward comparison choices), and this had a beneficial effect on subsequent performance—a behavioral assimilation effect (BAE). We show (Studies 1 and 2) that this apparent BAE is due, in part, to uncontrolled measurement error in pretest achievement. However, using simulated data (Study 3), these phantom BAEs were eliminated with latent‐variable models with multiple indicators. In Studies 4 and 5, latent‐variable models were applied to the Blanton et al. and Huguet et al. data, resulting in substantially smaller but still significantly positive BAEs. More generally in personality research based on correlational data, failure to control measurement error in pretest/background variables will positively bias the apparent effects of personality variables of interest, but widely applicable approaches demonstrated here can correct for these biases.