Warren and Donaldson provide an up-to-date snapshot of recent scientific developments in this ten-chapter, edited book. . . . Most intriguing is emerging research concerning social class, disability, race, ethnicity, gender, and sexual orientation, which means that positive psychology is maturing and becoming more multicultural, just as the questions asked are becoming more subtle and nuanced. Summing Up: Recommended. Upper-division undergraduates and above; faculty and professionals.