Introduction

Groups are not just collections of people standing together. They are the basic units of social life, and your daily experience is woven through them. From the family at breakfast to the classmates you debate with, to the friends you call in the evening — each of these is a group that gives you support, comfort, and a sense of belonging.

If you have ever been away from your family, school, and friends — in a new city or a strange place — you may have felt that something vital was missing. That feeling reveals how deeply our lives are shaped by the groups we belong to. It is therefore important to choose groups that influence us positively and help us grow into good citizens.

This chapter explores what groups really are, how they form, and how they change the behaviour of individuals within them. But the influence is not one-way. Just as others shape us, we too have the power to change others and the society around us.

Nature and Formation of Groups

A group is more than a random crowd. It has a structure, shared goals, and a sense of belonging among its members. Groups form because human beings are social — we need others for survival, support, and identity. The process of group formation involves interaction, acceptance of common norms, and the development of roles and relationships.

Types of Groups

Groups can be classified in several ways. Primary groups (like family) are small, intimate, and long-lasting. Secondary groups (like a school class or a workplace team) are larger, more formal, and goal-oriented. There are also in-groups (the groups we belong to) and out-groups (groups we do not belong to), which influence our attitudes and behaviour.

Influence of Group on Individual Behaviour

Groups affect individuals in powerful ways. Three key phenomena are discussed in this chapter:

• Social Loafing – When individuals put in less effort while working in a group than when working alone, often because they feel their contribution is less noticeable.
• Group Polarisation – When group discussion strengthens the initial attitudes of members, making them more extreme in the direction they already favoured.
• Groupthink – A mode of thinking in which the desire for harmony and conformity in a group leads to irrational or poor decision-making. This is explored in Box 7.1.

The Minimal Group Paradigm Experiments (Box 7.2)

These experiments show that even the most trivial, arbitrary classification of people into groups (e.g., based on a coin toss or preference for a painting) is enough to create in-group favouritism. This reveals how easily group identity forms and how powerfully it shapes behaviour.

Key Terms and Summary

The chapter ends with a list of key terms, a summary of the main ideas, review questions, project ideas, weblinks, and pedagogical hints — all designed to help you consolidate your understanding of how groups work and how they influence you.