Accountability.- Activities.- Beginnings, Middles and Endings.- Cohesion.- Collective.- Community groups.- Confidentiality.- Conflict.- Contexts.- Counselling groups.- .- Co-working.- Democracy.- Development.- Differences and similarities.- Difficulties in groups.- Encounter groups.- Evaluation.- Evidence-base.- Flash groups.- Gender.- Ground-rules.- Group as a whole.- Group dynamics.- .- Group supervision.- Group-think.- Health groups.- History of group-work.- Human development and groups.- Individuals.- Involuntary groups.- Joining and leaving.- Leadership.- Learning groups.- Manualised groups.- Membership.- Methods and Models.- .- Open and closed groups.- Organisations as groups.- Outcomes.- Planning and Preparation.- Populations.- Power.- .- Problem-solving.- Process.- Purpose.- Race.- Recording and documentation.- Recreation groups.- Reflection and group-work.- Research using groups.- Researching groups.- Residential groups.- Resources.- Roles.- Selection.- Self-help groups.- Sessions.- Silence.- Size.- Skills.- Social action.- Structure.- Subgroups.- Supervision of group-work.- Support groups.- Taboos.- Tasks.- Teamwork.- Theories.- Therapy groups.- Time.- Values.- Venue.- Virtual groups.- Work groups