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Direct linkHäfner, Isabelle; Flunger, Barbara; Dicke, Anna-Lena; Gaspard, Hanna; Brisson, Brigitte M.; Nagengast, Benjamin; Trautwein, Ulrich – Developmental Psychology, 2017
Using a cluster randomized field trial, the present study tested whether 2 relevance interventions affected students' value beliefs, self-concept, and effort in math differently depending on family background (socioeconomic status, family interest (FI), and parental utility value). Eighty-two classrooms were randomly assigned to either 1 of 2…
Descriptors: Foreign Countries, Intervention, Student Attitudes, Self Concept
Thrul, Johannes; Bühler, Anneke; Herth, Felix J. F. – Drugs: Education, Prevention & Policy, 2014
Aims: The objective of this study was to evaluate the preventive effect of a clinic-based, emotionally arousing, negative information giving intervention on adolescents' protective and risk factors of smoking. Methods: Data of 563 students (18 schools) from a cluster randomized controlled trial conducted in Heidelberg, Germany (2010-2011) were…
Descriptors: Prevention, Adolescents, Smoking, Randomized Controlled Trials
