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Direct linkZmyj, Norbert; Wehlig, Raphaela – Journal of LGBT Youth, 2019
Bullying against lesbian and gay adolescents continues to be a problem in Western societies. Interventions to reduce homonegative attitudes could help to address bullying. We evaluated the effectiveness of a workshop against homonegativity in adolescents (N = 214) aged between 14 and 16 years in a pretest, posttest, follow-up design with a control…
Descriptors: Homosexuality, Bullying, Adolescents, Followup Studies
Bertram, Christiane; Wagner, Wolfgang; Trautwein, Ulrich – American Educational Research Journal, 2017
The present study examined the effectiveness of the oral history approach with respect to students' historical competence. A total of 35 ninth-grade classes (N = 900) in Germany were randomly assigned to one of four conditions--live, video, text, or a (nontreated) control group--in a pretest, posttest, and follow-up design. Comparing the three…
Descriptors: Randomized Controlled Trials, Oral History, Interviews, Intervention
Weisseno, Georg; Landwehr, Barbara – McGill Journal of Education, 2015
This study investigates the effectiveness of political science classes in Germany. It analyzes whether or not 1,071 students in the 9th and 10th grade showed increases in knowledge after participating in the lesson series. This analysis focuses on the competence dimension "subject-specific content knowledge" as well as on the…
Descriptors: Foreign Countries, Political Science, European History, Knowledge Level
Download full textSriwongchai, Arunee; Jantharajit, Nirat; Chookhampaeng, Sumalee – International Education Studies, 2015
The study purposes were: 1) To study current states and problems of relevant secondary students in developing mathematics learning management model for improving creative thinking, 2) To evaluate the effectiveness of model about: a) efficiency of learning process, b) comparisons of pretest and posttest on creative thinking and achievement of…
Descriptors: Foreign Countries, Creative Thinking, Secondary School Students, Control Groups
Main, Laura F. – ProQuest LLC, 2014
The participants were grade 9-12 students (n = 75) from one suburban high school who were part of the Future Problem Solving Program (FPSPI). The research involved both quasi-experimental and correlational components. First, an ANCOVA was used to compare the mean scores of the Qualifying Problem (QP) for both the treatment and comparison groups…
Descriptors: Problem Solving, Grade 9, Grade 10, Grade 11
Paiva, Andrea L.; Amoyal, Nicole R.; Johnson, Janet L.; Prochaska, James O. – Journal of Early Adolescence, 2014
Using cluster analysis, 717 students who reported that they had never smoked and the nondrinking 292 students who reported that they had never drank alcohol were classified into four profile groups based on their Pros and Cons of not using and temptation to use. Profiles were labeled Most Protected, Least Positive, Most Negative, and Most Tempted.…
Descriptors: Early Adolescents, Substance Abuse, Smoking, Drinking
Buckner, Barbara Renee – ProQuest LLC, 2011
The purpose of this study was to determine the effect of TI-Nspire graphing calculator use on student achievement and on teacher behavior variables of planning, teaching, and assessing. This study investigated the teaching of functions by teachers using the TI-Nspire graphing calculator versus teachers using a non-graphing scientific calculator. …
Descriptors: Video Technology, Control Groups, Teacher Behavior, Lesson Plans
