1. DAVID W. JOHNSON is a professor in the Department of Educational Psychology, University of Minnesota, 60 Peik Hall, 159 Pillsbury Drive SE, Minneapolis, MN 55455; . His research focuses on cooperation and competition, conflict resolution, and diversity.
2. ROGER T. JOHNSON is a professor in the Department of Curriculum and Instruction, University of Minnesota, 60 Peik Hall, 159 Pillsbury Drive SE, Minneapolis, MN 55455; . His research focuses on inquiry learning, cooperation and competition, and conflict resolution.