During which developmental stage does a child begin to worry about fitting in with peers?

The two-way fair weather cooperation level is characterized by children starting to develop a deeper understanding of social interactions and relationships. During this stage, which typically occurs around the ages of 7 to 12, children become more aware of their peers’ perspectives and feelings, leading them to care about fitting in and establishing their social identity. At this level, cooperative play and mutual benefit become essential components of interactions.

Children begin to navigate friendships more consciously, valuing their peers' opinions and the dynamics of group inclusion. They also start to experience the social hierarchies and norms within their peer groups, which can heighten concerns about acceptance and belonging. This focus on peer relationships marks a significant shift from earlier developmental stages, where interactions are more focused on individual needs or cooperation without the nuanced understanding of social dynamics.