Plant-based dietary choices can help to mitigate climate change. Yet, most people still consume meat. Social identity influences dietary choices. This study tests whether shared identity, pro-veg*n norms, attitudes, and dietary intentions, can be strengthened via a vegan cooking workshop for children. Pupils (N = 155) cooked in small groups (3-6…

Based on classroom management fostering autonomy support and intrinsic motivation, this study examines effects of reciprocal peer-monitoring of learning behaviours on cognitive and affective outcomes. Within our study, 470 German secondary school students between 13 and 16 years of age participated in a multimodal hands- and minds-on exhibition…

In this study, the effectiveness of a life skills program to impede tobacco use in early adolescence was scrutinized. The focus was on the mediating role of yielding to peer pressure. The universal school-based life skills program IPSY (Information + Psychosocial Competence = Protection) against adolescent substance use was implemented over 3…

The effectiveness of a peer-mediation-program for third grade students (elementary school) was evaluated through a longitudinal study. The sample consisted of 262 students, 141 boys and 121 girls, drawn from thirty classrooms in fifteen elementary schools. There was one intervention and one control-class in each school. The evaluation was carried…

The many sea-changes in German culture have given rise to a growing population of children and youth at risk. This article describes the creation of a Positive Peer Culture in a special school for students with emotional and behavioural problems. The authors review challenges facing youth in modern Germany, the implementation of the PPC program,…