Disentangling between- and within-person associations between empathy and prosocial behaviours during early adolescence

Introduction: Although empathy has been found to be related to prosocial behaviour, little is known about the longitudinal links between these two concepts during early adolescence, a unique window into developmental changes on empathy and prosocial behaviour considering the physical, cognitive, socio-emotional and contextual changes occurring during this period. Even though changes in adolescent empathy have been associated to changes in adolescent prosocial behaviour, studies examining this link on the within-person level are lacking. The present study investigated the within-adolescents longitudinal relations among empathy and prosocial behaviour. Methods: 383 French adolescents (MageT1 = 12.15, 50.4% male) reported on their empathy and prosocial behaviour each year across three years. In order to disentangle between-adolescent differences from within-adolescent processes, Random-Intercept Cross-Lagged Panel Models were applied. Results: At the between-person level, there was a strong positive association between empathy and prosocial behaviour. At the within-person level, adolescents who reported more empathy than usual reported higher than usual prosocial behaviour one year later. Conclusions: Adolescents with higher empathy compared to their peers tended to be those who reported higher prosocial behaviour. Changes in empathy within-adolescents were related to later within-adolescents' change in prosocial behaviour.