

He wrote two books about children's friendships and peer relationships with Michael Thompson and Catherine O'Neill Grace: 'Best Friends, Worst Enemies', and 'Mom, They're Teasing Me'. He is also the co-author, with Anthony DeBenedet, of 'The Art of Roughhousing'. Magazine' was the winner of the 2003 'Golden Lamp' award from 'Education Press'. His books have been translated into fourteen languages. He published his first book on his approach in 2001. After an internship at Tulane University, he began a research and private practice career in Madison, Wisconsin. He attended Haverford College and received his PhD in clinical psychology from Duke University.

He developed a playful approach to child raising, in general, and to childhood anxiety, in particular. Cohen was a psychologist and author, specializing in children's play and play therapy.
