Prosocial cascades: Understanding and nurturing the potential for positive developmental trajectories.

Understanding the developmental cycles and mechanisms that nurture prosocial behavior can support our potential to build a kinder and more peaceful society. The current chapter explores positive developmental cascades, with a focus on the chain reactions that explain how prosocial behaviors manifest and evolve throughout childhood and adolescence. Specifically, we review the main issues, theories, and findings related to the study of children's prosocial trajectories. We focus on various socialization environments that span typical and adverse (e.g., trauma, poverty, maltreatment, exposure to violence) contexts. Furthermore, we highlight the evidence behind efforts and initiatives that aim to nurture prosociality in children and families. We conclude with future directions for how research on positive cascades can inform research-practice alliances work that aims to break harmful cycles and promote prosocial mechanisms of change.