Social participation in everyday life -- Theoretical basis of social participation : an overview -- Social participation basics -- Social capital : a systems perspective -- Social participation in professional education -- Social development in infancy and childhood -- Adolescent social development and participation -- Adult social development : theories, roles, and contexts -- Social development in older adulthood : theories, transitions, roles, and contexts -- Social participation and disability research -- Social participation tools in activity settings -- Interventions for children to develop social participation roles, skills, and networks -- Adult interventions for adolescents to develop social participation roles, skills, and networks -- Adult interventions to promote social participation -- Older adult interventions to facilitate social participation.