Purpose: Physical education (PE) is an important context for promoting health-related cardiorespiratory fitness (CRF) in youth. Within PE, the lesson context and teacher behavior may be relevant for the promotion CRF; however, evidence is scarce. Therefore, the purpose of this study was to assess whether students' CRF improvement in a school year…

The present study complements previous research findings with new data to improve our understanding of the relationship between motivational variables and academic performance in math mediated by self-regulated learning (SRL). A structural equation model with predictor (i.e., grade retention, grade level, and study time), process (i.e., perceived…

The goal of this article was to develop and validate a self-complexity scale for adolescents. Therefore, 4 empirical studies were developed. In Study 1, a content analysis of attributes used in school books was conducted. This analysis was complemented in Study 2 with an exploratory study of adolescent's self-descriptions in an open-ended…

Objective: To consider the short- and medium-term impact of a school-based exhibition of prevention materials designed by adolescents in human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS) knowledge and attitudes and in the school's involvement in health education. Design: Mixed-methodology that combines quantitative and…