Fig. 2

Cross-level interaction a) Loneliness in school of students with lower socioeconomic background by schools’ overall share of lower socioeconomic background students. b) Loneliness in school of students with severe bullying experience by schools’ overall share of severely bullied students. Note: the graphs plot marginal effects of being in a school with a certain proportion of lower socioeconomic background students (a) or of bullying incidence (b) for 15-year-olds by own low or high socioeconomic background (a) or high or no bullying experience(b) on the probability to feel lonely