The purpose of this study was to examine the degree to which academic achievement in U.S. schools could be explained by several indicators of belongingness (i.e., close teacher-student relationships, peer acceptance, school liking, low levels of loneliness in school and positive perceptions of peers) and school engagement. For this study, data…

This study examined adult and group influences on youth participation in youth empowerment (YE) Statewide Youth Movement Against Tobacco Use programs. Adults provide individual guidance to youth groups and through existing tobacco control networks affect the social context in which YE programs are implemented. The authors tested hypotheses about…

Two-level data sets are frequently encountered in social and behavioral science research. They arise when observations are drawn from a known hierarchical structure, as when individuals are randomly drawn from groups that are randomly drawn from a target population. When the covariance structures in the group level and the individual level are the…