This key text from the best-selling "Understanding Welfare" series provides an unique understanding of the main theoretical perspectives and concepts used in social policy in a student-friendly format. A central theme is that theory helps us to understand policy, politics and practice. Written by a leading author in UK social policy, the book uses diverse examples from contemporary social policy to help theoretical arguments come alive and uses summaries and additional resources to help students and their teachers in their learning. It will be essential reading for 2nd and 3rd year undergraduates and postgraduates in social policy, social theory and related subjects, as well as their teachers.