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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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Lippold, Melissa A.; Hussong, Andrea; Fosco, Gregory; Ram, Nilam – Journal of Early Adolescence, 2021
Few longitudinal studies examine how "changes" in parent-child relationships are associated with changes in youth internalizing problems. In this longitudinal study, we investigated how developmental trends (linear change) and year-to-year lability (within-person fluctuations) in parental warmth and hostility across Grades 6 to 8 predict…
Descriptors: Parent Child Relationship, Behavior Problems, Correlation, Developmental Stages
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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