Written by four leading researchers, this book examines prosocial behavior from a new multilevel perspective. The authors expand the breadth of the field, incorporating analyses of biological and genetic factors that predispose individuals to prosocial b "...[it] should be highly appealing to any instructor offering a course in helping and altruism ...[to] scholars...for their own libraries, and...to practitioners." -Mark Snyder, Ph.D. University of Minnesota "The writing style is clear and interesting...I recommend [the book]...with enthusiasm." -William G. Graziano, Ph.D. Purdue University "...A must-have on the bookshelves of students and researchers interested in understanding the complexities of helping behavior...The writing is engaging ..." -Allen Omoto, Ph.D. Claremont Graduate University