• How do groups function?
• How are people changed or influenced or affected by the groups they belong to?
• What similarities can we find across groups of different types, in different situations?

The new edition develops the existing coverage of topics such as social influence, extreme behaviour in groups, group productivity, social dilemmas, group decision-making and inter-group conflict. It also provides additional chapters examining research and theory regarding social support, and electronic groups. This authoritative text will familiarize the reader with current theory and the latest findings, exploring the significance and application of group research for our everyday lives.