Group formation refers to the process through which individuals come together to form a collective unit that interacts regularly to achieve common goals or satisfy shared needs. In the context of programme planning and evaluation, understanding group formation is essential because many development, welfare, educational, and community-based programmes rely on groups as the primary medium for participation, implementation, and assessment. Groups provide a structured environment where individuals can share resources, experiences, and responsibilities, thereby enhancing both individual growth and collective effectiveness. At its core, the concept of group formation is grounded in the idea that human beings are social by nature and tend to associate with others for security, belongingness, identity, and achievement. A group is not merely a collection of individuals but a social system characterized by interaction, mutual influence, shared norms, and a sense of belonging. Group formation often begins when individuals recognize a common problem, interest, or