Includes bibliographical references (p. 223-226) and index. Contents : Pt I An illustrative analysis of a group meeting Introduction -- 1. Analysis of the events in sequence -- 2. A systematic analysis -- Pt II The group as a whole 3. Group structure -- 4. Group dynamics -- 5. Some quantitative considerations -- 6. Growth and history -- 7. The group authority -- 8. The classification of groups -- Pt III The individual in the group 9. Personality structure -- 10. Analysis of transactions -- 11. Analysis of games -- 12. Adjustment of the individual to the group -- Pt IV 13. Group psychotheraphy -- 14. The therapy of ailing groups -- 15. Management of organizations -- appendix A proposed classification for a social aggregations