Angela M. O'Donnell is an educational psychologist at Rutgers University who has made substantial contributions to the understanding of collaborative learning (O'Donnell, Hmelo-Silver, & Erkens, 2006), and is the co-author of a widely used introductory textbook (O'Donnell, Reeve, & Smith, 2007). She is a member of the editorial review boards of Contemporary Educational Psychology, Educational Psychologist, Educational Psychology Review, the Journal of Experimental Education, and the Journal of Educational Psychology.