This book is a collection of essays covering a range of issues related to socioeconomic inequalities and diversities. The authors, leading social scientists of diverse nationalities, represent varied perspectives. The book has essays on multiculturalism, social inclusion and exclusion of minorities and other marginalized groups such as low castes, linguistic minorities, Adivasis (tribals), persons with disability and unemployed youth. The book focuses on some innovative concepts considered necessary to understand the very process and evolution of aspects of social development such as pro-sociality, authentic responsible self and leadership ideology. The book deals with the challenges for achieving social development and societal harmony. The book will be a very useful resource for social science scholars and particularly for social and cultural psychologists, development professionals and administrators interested in the issues related to social development, social diversity and inter-group relations. The book will also be useful for policy formulation and action.