Parenting and child body mass index: Longitudinal investigation of maternal and paternal influence

The aim of this study was to investigate the cross‐sectional and longitudinal relationships between general parenting and body mass index (BMI) status of children between the ages of 4 and 7 in Australia. A nationally representative sample of 4,423 children (49% female) and their parents was used for the present study. Measures of parental demandingness and responsiveness were completed by parents at child age 4–5 years. Height and weight measurements of children were taken at child age 4–5, and again at 6–7, from which BMI status was calculated. No influence of mothers' parenting on child BMI status was shown, and fathers' responsiveness was found to be predictive of increased risk for overweight/obesity at 6–7 years. While the present study is complicated by measurement issues, findings suggest that increased risk for overweight in young children may be associated with responsiveness in fathers. Obesity prevention programs involving parents should take into account the influence of fathers' parenting on child BMI status.     

Prolonged exposure therapy for combat-related posttraumatic stress disorder: comparing outcomes for veterans of different wars

There is significant support for exposure therapy as an effective treatment for posttraumatic stress disorder (PTSD) across a variety of populations, including veterans; however, there is little empirical information regarding how veterans of different war theaters respond to exposure therapy. Accordingly, questions remain regarding therapy effectiveness for treatment of PTSD for veterans of different eras. Such questions have important implications for the dissemination of evidence based treatments, treatment development, and policy. The current study compared treatment outcomes across 112 veterans of the Vietnam War, the first Persian Gulf War, and the wars in Afghanistan and Iraq. All subjects were diagnosed with PTSD and enrolled in prolonged exposure (PE) treatment. Veterans from all three groups showed significant improvement in PTSD symptoms, with veterans from Vietnam and Afghanistan/Iraq responding similarly to treatment. Persian Gulf veterans did not respond to treatment at the same rate or to the same degree as veterans from the other two eras. Questions and issues regarding the effectiveness of evidence based treatment for veterans from different eras are discussed.     

A systematic meta-review of evaluations of youth violence prevention programs: Common and divergent findings from 25 years of meta-analyses and systematic reviews

Violence among youth is a pervasive public health problem. In order to make progress in reducing the burden of injury and mortality that result from youth violence, it is imperative to identify evidence-based programs and strategies that have a significant impact on violence. There have been many rigorous evaluations of youth violence prevention programs. However, the literature is large, and it is difficult to draw conclusions about what works across evaluations from different disciplines, contexts, and types of programs. The current study reviews the meta-analyses and systematic reviews published prior to 2009 that synthesize evaluations of youth violence prevention programs. This meta-review reports the findings from 37 meta-analyses and 15 systematic reviews; the included reviews were coded on measures of the social ecology, prevention approach, program type, and study design. A majority of the meta-analyses and systematic reviews were found to demonstrate moderate program effects. Meta-analyses yielded marginally smaller effect sizes compared to systematic reviews, and those that included programs targeting family factors showed marginally larger effects than those that did not. In addition, there are a wide range of individual/family, program, and study moderators of program effect sizes. Implications of these findings and suggestions for future research are discussed.     

Infants' ability to categorise on the basis of rhyme

Two experiments are described, which investigated 7 - to 13-month-old infants' abilities to categorise syllables according to their ending sounds, or rhymes. Using the Conditioned Headturn (CHT) Procedure, infants were conditioned to turn their head when one set of rhyming CVCs changed to another set of rhyming CVCs. Even the 7 -month-old infants demonstrated an ability to categorise according to rimes. The infants could be separated into three different groups: those who conditioned but did not succeed in a rhyming task; those who succeeded at one rhyming task but not a second; and those infants who succeeded on two rhyming tasks. The infants in the second group were showing an early sensitivity to rhyme. However, they appeared to be learning a very specific rule, listening only for one category of rhyme. The third group of infants was able to extend the initial rule they learned to include new rhymes. This group learned not only to highlight one particular rhyme, but were also able to abstract the previously learned rule to new rhymes, thereby demonstrating a higher level of sophistication in their categorisation of rhymes. These results are discussed in relation to the ontogeny of language learning, and work demonstrating a relationship between rhyming ability and competence in reading and writing.     

Doing Social Identity Leadership: Exploring the Efficacy of an Identity Leadership Intervention on Perceived Leadership and Mobilization in Elite Disability Soccer

Based on social identity principles we explore the efficacy of a leadership intervention in elite disability sport. A 2-year longitudinal design involved an elite male disability soccer team that prepared for a World Championship in Year 1 and then reformed for Paralympic competition in Year 2. Athlete data indicated marginal to significant increases from baseline to intervention phases in social identification, identity leadership displayed by staff, and hours practice completed away from training camps, but no significant change in mobilization of effort (in Year 1 and 2). We discuss the applied implications, study limitations, and opportunities for future researchers.     

GENDER DIFFERENCES IN LEADER EMERGENCE PERSIST EVEN FOR DOMINANT WOMEN: AN UPDATED CONFIRMATION OF ROLE CONGRUITY THEORY

Role congruity theory predicts that women will be less likely than men to emerge as leaders when expectations for the leader role are incongruent with gender stereotypes. A 2 × 2 × 3 design that crossed the sex of the dominant partner, mixed- and same-sex dyads, and masculine, feminine, and neutral tasks involved 120 dyads of unacquainted college students in which one partner scored higher in dominance. In same-sex partnerships, the dominant member consistently emerged as leader. In mixed-sex dyads, the gender typing of the task did not influence dominant male ascendance but it did affect women's. When the task was masculine-typed or neutral, less dominant men were more likely to emerge as the leader of the dyad, frequently being appointed by the dominant woman herself. Thus, even when women possess the agentic quality of dominance consistent with the leader role, the incongruence between masculinized task demands and gender stereotypes mitigate against women's leadership emergence.     

New-born infants' perception of similarities and differences between two- and three-dimensional stimuli

The new-born baby' ability to detect similarities and differences between three-dimensional stimuli and their two-dimensional representations is investigated in three experiments, using both visual preference and habituation procedures. In Expt 1 new-borns strongly preferred (looked more at) complex objects to their photographs. This preference was found with monocular viewing, and suggests that motion parallax is a salient cue in the detection of the differences between the two- and three-dimensional stimuli. The results from Expt 2 support the view that, for the new-born, the differences between objects and their two-dimensional representations are more detectable or salient than their similarities. These conclusions were further supported by the results from the last experiment, using simpler stimuli, although the preference was for the two- rather than the three-dimensional stimuli. The results suggest that studies which use only two-dimensional stimuli may provide only limited information about the course of perceptual development, at least in the first few months from birth.