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Lee, Joey A.; Velthoff, Jessica; Welk, Greg J. – Measurement in Physical Education and Exercise Science, 2022
The study examined the sensitivity to change of field assessments of handgrip strength and vertical jump following programmatic interventions in physical education settings. Using a naturalistic experimental design, classes of 6th grade students (N = 158) were randomized to receive either an 8-week musculoskeletal strength or plyometric power…
Descriptors: Physical Activities, Physical Education, Muscular Strength, Physical Fitness
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Mak, Hio Wa; Russell, Michael A.; Lanza, Stephanie T.; Feinberg, Mark E.; Fosco, Gregory M. – Developmental Psychology, 2020
Antisocial peer behavior and low parental knowledge of adolescents' activities are key interpersonal risk factors for adolescent substance use. However, how the magnitude of associations between these risk factors and substance use may vary across adolescence remains less well understood. The present study examined the age-varying associations of…
Descriptors: Adolescents, Antisocial Behavior, Age Differences, Knowledge Level
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Gentile, Douglas A.; Berch, Olivia N.; Choo, Hyekyung; Khoo, Angeline; Walsh, David A. – Developmental Psychology, 2017
Mass media have numerous effects on children, ranging from influencing school performance to increased or reduced aggression. What we do not know, however, is how media availability in the bedroom moderates these effects. Although several researchers have suggested that bedroom media may influence outcomes by displacing other activities (the…
Descriptors: Mass Media Effects, Family Environment, Hypothesis Testing, Age Differences
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Spoth, Richard; Randall, G. Kevin; Shin, Chungyeol – School Psychology Quarterly, 2008
An expanding body of research suggests an important role for parent or family competency training in children's social-emotional learning and related school success. This article summarizes a test of a longitudinal model examining partnership-based family competency training effects on academic success in a general population. Specifically, it…
Descriptors: Rural Schools, Intervention, Structural Equation Models, Academic Achievement