Effects of participation in a martial arts–based antibullying program in elementary schools

This study evaluated the Gentle Warrior Program, a traditional martial arts–based intervention to reduce aggression in children, as it was implemented in three elementary schools. The sample consisted of 254 children in grades 3, 4, and 5 who participated in the Gentle Warrior Program as part of a larger school violence intervention. Results indicated that boys who participated in more Gentle Warrior sessions reported a lower frequency of aggression and greater frequency of helpful bystanding (i.e., helpful behavior toward victims of bullying) over time, relative to boys with less frequent participation. The effect of participation on aggression was partially mediated by empathy. The effect of participation on helpful bystanding was fully mediated by changes in student empathy. No significant results were found for girls. Results of the study provide preliminary support for the use of martial arts–based interventions to address bullying in schools for boys, by teaching empathy, self‐control, and peaceful strategies to resolve conflicts. © 2008 Wiley Periodicals, Inc.     

Exploring Top Hat’s Impact on Undergraduate Students’ Belongingness,Engagement, and Self-Confidence: A Mixed Methods Study

Abstract

Evidence suggests that the use of educational technologies may promote positive learning environments and contribute to students’ success. The following mixed methods study examined the impact of Top Hat in a blended learning environment on undergraduate students’ sense of belongingness, engagement, and self-confidence in a Canadian post-secondary institution. A survey study measured students’ sense of belongingness, engagement, and self-confidence before and after the course, which used Top Hat. The results show a significant increase in belongingness and self-confidence, but a decrease in engagement. Contrarily, focus groups revealed that using Top Hat may improve the overall learning experience. Limitations and future recommendations are discussed.     

Gender Effects in Children’s Development and Education

This paper attempts to clarify several lines of research on gender in development and education, inter‐relating findings from studies on intuitive/informal knowledge with those from research on achievements and attitudes in science. It acknowledges the declining proportions of male teachers world‐wide and examination successes which indicate a reversal of educational disadvantage from female to male; as well as the recent evidence on the effects of the gender of teachers upon student success. An empirical contribution to the literature is offered, drawing from the gender‐related findings from research on children’s cosmologies in China and New Zealand with 346 boys and 340 girls (of whom 119 boys and 121 girls participated in the current study). The investigation focused on children’s concepts of the motion and shape of the Earth through observational astronomy and gave children opportunities to express their ideas in several modalities. The in‐depth interviews allowed children to share their meanings with gender differences becoming apparent (e.g. girls’ superior ability to visually represent their cosmologies and boys’ greater awareness of gravity). However, these differences were not universal across genders or cultures and marked similarities were apparent both in the content of children’s responses and in their reasoning processes. By comparing boy/girl cosmological concept categories and by tracking their developmental trends by age, statistical evidence revealed the extent of the similarities within and across these diverse cultures. The findings reinforce those from the authors’ knowledge restructuring and cultural mediation studies and provide support for the view that boys and girls have similar, holistic‐rather‐than‐fragmented, cosmologies which have features in common across cultures and ethnic groups.     

Predicting Suicide Risks Among Outpatient Adolescents Using the Family Environment Scale: Implications for Practice and Research

This study was designed to identify characteristics of family functioning that relate to suicide potential in an outpatient adolescent population. Participants included 51 adolescents between the ages of 14 and 18 who were involved in outpatient counselling. The Family Environment Scale and the Suicide Probability Scale were used to assess adolescents’ perception of family social climate and degree of suicide risk respectively. Results revealed significant correlations between suicide risk and family systems characterized by heightened conflict and lower levels of cohesion, independence, and organization. A stepwise multiple regression analysis suggested that organization (related to clarity and structure in family activities and responsibilities) was the strongest predictor of suicide risk. Implications for research and practice are considered.     

Motorische Leistungsfähigkeit von Kindern und Jugendlichen in Deutschland

Motor performance is an important health resource. Review articles revealed a decline of motor performance of approximately 10?% between 1975 and 2006. In the past most of the data available for such comparisons came from ad hoc studies with non-standardized methods. Within the framework of the ”Motorik-Modul“ (MoMo) study as part of the German Health Interview and Examination Survey for Children and Adolescents (KiGGS), it is possible for the first time to directly compare two cohorts in the ages of 4–17 years in a nationally representative database for Germany. The aim of this article is to report changes in motor performance of children and adolescents in the time period 2003–2006 (cohort baseline n = 4528) compared to 2009–2012 (cohort wave 1, n = 2820). Overall, it is clearly shown that the motor performance of children and adolescents in Germany did not decrease within the observational period of 6 years. The comparison of mean values of the baseline cohort compared to those of wave 1 showed that 28 out of 52 mean values of the two cohorts with a high probability did not differ based on 95?% confidence intervals (CI). In 24 out of the 52 mean values positive changes could be noted based on the individual 95?% CI values. There were more positive changes in primary school aged children than in other age groups. Within these positive changes, most effect sizes were small to medium. The results indicate that recent activities aiming at elevating motor performance levels may have started to make an impact and should be expanded, also in secondary schools. The comparative cohort study presented in this article is currently being checked by the ongoing MoMo wave 2 survey of 2014–2017.     

Personality Traits Are Associated With Cortical Development Across Adolescence: A Longitudinal Structural MRI Study

How personality traits relate to structural brain changes in development is an important but understudied question. In this study, cortical thickness (CT) and surface area (SA), estimated using magnetic resonance imaging (MRI), were investigated in 99 participants aged 8–19 years. Follow‐up MRI data were collected after on average 2.6 years for 74 individuals. The Big Five personality traits were related to longitudinal regional CT or SA development, but limited cross‐sectional relations were observed. Conscientiousness, emotional stability, and imagination were associated with more age‐expected cortical thinning over time. The results suggest that the substantial individual variability observed in personality traits may partly be explained by cortical maturation across adolescence, implying a developmental origin for personality–brain relations observed in adults.     

Effect of seasonality on the dynamical behavior of an ecological system with impulsive control strategy

In this paper, on the basis of the theories and methods of ecology and ordinary differential equation, an ecological model consisting of two preys and one predator with impulsive control strategy and seasonal effects is established. Conditions which guarantee the global asymptotical stability of the prey-eradication periodic solution are obtained using the theory of impulsive equations, small amplitude perturbation skills, and comparison techniques. Further, the influences of the impulsive perturbation and seasonal effects on the inherent oscillation are studied numerically. These show to be consistent with the theoretical analysis and rich complex population dynamics, such as species extinction and permanence. Moreover, the population dynamical behavior of the model is demonstrated by the computed largest Lyapunov exponent. By investigating the strange attractors through their computed Fourier spectra, we know that seasonality has a profound effect on the population dynamical behavior. All these results are expected to be of use in the study of dynamic complexity of ecosystems.