What is a key difference between formal and informal social groups in the context of social identity and social change?

A key difference between formal and informal social groups is how they are organized and the roles they play in shaping social identity and driving social change. Formal social groups, like clubs or organizations, have clear rules, structures, and goals, which help members identify themselves with specific missions, such as a charity group working to help the homeless. In contrast, informal social groups, such as friends hanging out or online communities, are more relaxed and focus on personal connections, allowing for spontaneous ideas and changes in social identity. For example, a group of friends might start a campaign on social media to promote environmental awareness, showing how informal groups can also influence social change. Overall, while formal groups often have set objectives that guide their actions, informal groups can adapt quickly and inspire change through personal relationships and shared experiences.