Esther Mertens

Table of Contents Chapter 1 General Introduction Chapter 2 The Effectiveness of Rock and Water in Improving Students’ Socio-Emotional Adjustment and Social Safety: Study Protocol for a Randomized Controlled Trial Chapter 3 Solid as a Rock, Flexible as Water? Effectiveness of a School-Based Intervention Addressing Students’ Intrapersonal and Interpersonal Domains Chapter 4 Personality as a Moderator of Intervention Effects of a School- Based Intervention Chapter 5 The Role of Classmates’ Modeling and Reinforcement in a Universal School-Based Intervention Addressing Positive Peer Relations Chapter 6 What to Do or Not to Do to Stimulate Students’ Intrapersonal and Interpersonal Domains: Meta-Analysis of School-Based Interven- tion Components Chapter 7 General Discussion References Summary Nederlandse Samenvatting (Summary in Dutch) Dankwoord (Acknowledgements) Curriculum Vitae Publication List