Longitudinal data from a large sample of twins participating in the Netherlands Twin Register (n = 42,827, age range 3-16) were analyzed to investigate the genetic and environmental contributions to childhood aggression. Genetic auto-regressive (simplex) models were used to assess whether the same genes are involved or whether new genes come into…

Family history events have been shown to be reliable predictors of eating and body image concerns; however, little is known regarding how family history events compare in a clinical sample, or if these events differ by gender. The current study addresses this paucity, focusing on 3,129 university students seeking clinical services. Having a family…

We examine the joint effects of gender and experience on statistical reasoning. Participants with various levels of experience in statistics completed the Statistical Reasoning Assessment (Garfield, 2003), along with individual difference measures assessing cognitive ability and thinking dispositions. Although the performance of both genders…

Preschool children could be helped to make early adjustment to a school environment before normal schooling begins. Transition from home to school represents one of the biggest changes that children undergo in the first eight years of life. This change may be likened to that which a seedling undergoes when transplanted from one place to another.…

Background: Students with disability show an increasing incidence of school failure. Quality teaching and appropriate support may foster high self-efficacy, a predictive factor for successful school outcomes. Physical Education (PE) can provide students with a context in which self-efficacy and participation are promoted leading to improved…

This study aims at identifying the teacher's roles in light of knowledge economy from the perspective of the educational supervisors in Palestine. To achieve the study's objective, a questionnaire consisted of 35 items was developed and applied on 50 male and female supervisors in the Directorate of Education in governorate of Ramallah, al-Bireh…

Although spending time in criminogenic settings is increasingly recognized as an explanation for adolescent delinquency, little is known about its determinants. The current study aims to examine the extent to which (change in) self-control and (change in) delinquent attitudes relate to (change in) time spent in criminogenic settings, and the…

This study examined dispositional and situational correlates of donating behavior in a sample of 221 eight-year-old children. Children were shown a promotional clip for a charity, including a donation call. For a random half of the children, the video fragment ended with a probe of a same-sex peer donating money to the charity. Seeing a peer…

High quality teaching, student learning, and students achievement is dependent on the skills teachers use and the existence of professional expertise such as teachers reflectivity. The purpose of this study was to see whether there was any relationship between Iranian EFL teachers reflectivity and their students' language achievement and whether…

This study examined the mean duration of child attention across three teaching conditions (child choice, adult choice, or adult presentation) of 63 preschool-age children. A repeated-measures ANOVA was used to compare the means across the three teaching conditions, indicating a statistically significant difference between the teaching conditions.…

Children's physical activity (PA) is increasingly restricted by the fast pace of modern life. Schools are the opportune setting in which to increase PA during daily recess. The purpose of this study was to record the degree of PA of 6th grade primary school students during recess and determine whether the playground size and available equipment…

Based on former research, it can be assumed that attachment relationships provide a context in which children develop both the effortful control (EC) capacity and the repertoire of responses to regulate distress. Both are important to understand children's (mal)adjustment. While the latter assumption has been supported in several studies, less is…

No comprehensive studies have examined the utility of family drawings within the context of international adoption. We examined the relationship of Kinetic Family Drawings by 54 internationally adopted children in the USA (65% female; M age = 8.57 years, SD = 2.1) to demographics, child competencies (Child Behavior Checklist: CBCL/6-18) and…

Many Iraqi refugee students in the United States suffer from posttraumatic stress disorder (PTSD) as well as acculturation stresses. These stresses often create challenges for their integration into U.S. schools. The project explored risk factors such as the length of educational gaps in transit, PTSD, and separation and marginalization…

We examined the prediction that the interaction between Glucocorticoid Receptor Gene ("NR3C1") methylation, stress, and experienced maternal support predicts anxious and avoidant attachment development. This was tested in a general population sample of 487 children and adolescents (44% boys, M[subscript age] = 11.84, SD[subscript age] =…