This fact sheet was written by Béatrice Lamboy based on the CPS Volume 1 guide published by Santé publique France. It focuses on the first general psychosocial competency (CPS) and provides a summary of a specific psychosocial competency: Developing Bonds and Prosocial Behaviors (S1.3). Developing social connections and prosocial behaviors involves knowing how to initiate relationships, interact in a friendly manner by listening and asking questions, showing interest, getting along with others, and being able to form friendships, as well as being able to adopt prosocial behaviors, that is, attitudes and actions that are beneficial to others and provide them with support (cooperation, acts of mutual aid, collaboration, social engagement, etc.). This involves developing three main areas of psychological knowledge and skills: Knowledge and Skill 1: Knowing how to connect with others and develop meaningful relationships; Knowledge 2: Understanding the various types of prosocial behaviors; Skill 3: Demonstrating prosocial behaviors beyond one’s immediate circle and expressing appreciation (or gratitude). This specific skill can be applied during CPS activities. Thus, following a theoretical section, practical examples are presented for adults, youth, and children.