Valid and reliable teacher ratings serve as the foundation for screening and assessment of youth with behavioral disorders and twin studies offer an opportunity to study those ratings. We conducted a meta-analysis of 15 empirical investigations of aggressive and rule-breaking behavior using teacher ratings in the context of a twin research design.…

Multilevel meta-analysis is an innovative synthesis technique used for the quantitative integration of effect size estimates across participants and across studies. The quantitative summary allows for objective, evidence-based, and informed decisions in research, practice, and policy. Based on previous methodological work, the technique results in…

School-aged youth face a number of academic and behavioral challenges within the educational environment, including bullying involvement. Unfortunately, bullying has been linked to a number of detrimental psychosocial outcomes. Scholars have attempted to establish predictive profiles for youth involved in bullying. These profiles include bully…

Debate is occurring about which result interpretation aides focused on examining the experimental effect should be used in single-subject experimental research. In this study, we examined seven nonoverlap methods and compared results using each method to judgments of two visual analysts. The data sources for the present study were 36 studies…

The educational success of Latino students has never been a more pressing issue. As of July 2001, people of Hispanic origin are the second largest racial/ethnic group in the United States and continue to be the fastest growing group in the United States. Despite this, there is little research on the behavior of Latino students--possibly because…