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Michael Thompson, Ph.D. , is a psychologist, lecturer, consultant, and former seventh-grade teacher. He conducts workshops on social cruelty, children's friendships, and boys' development across the United States. He is the author of Speaking of Boys and coauthor of the New York Times bestseller Raising Cain , as well as Best Friends, Worst Enemies , with Catherine O'Neill Grace and Lawrence J. Cohen. The father of a daughter and a son, he and his wife live in Arlington, Massachusetts. Lawrence J. Cohen, Ph.D. , is a psychologist and the author of Playful Parenting . He is also a columnist for The Boston Globe . He lives in Brookline, Massachusetts, with his wife and daughter. Catherine O'Neill Grace is the author of numerous nonfiction books for children and was a former middle school teacher. For fifteen years she wrote a Washington Post column for young readers about health and psychology. She and her husband live in Waltham, Massachusetts.
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