Kristin T Rowe 
Social Isolation, Participation and Impact on Mental Health [PDF ebook] 

Classic and contemporary theories, based on evolutionary, social, and developmental perspectives, argue that humans are motivated from the very earliest days of life to seek, establish and maintain social interactions and close relationships with others. For any species with a social nature, isolation from other con-specific members is an environmental deprivation of a basic need. This book examines participation in society and the impact social isolation has on mental health.