Christopher R. Agnew is a Professor in the Department of Psychological Sciences at Purdue University. He received his Ph.D. in Social Psychology from the University of North Carolina at Chapel Hill in 1994. His research focuses primary on close, interpersonal relationships, with particular emphasis on commitment, social influence, and dissolution processes. He has published widely, authoring more than 50 articles and chapters. Donal E. Carlston is a Professor in the Department of Psychological Sciences at Purdue University. He received his Ph.D. from the University of Illinois at Urbana-Champaign in 1977. His primary research interest is in the area of social cognition, with an emphasis on intentional and unintentional mechanisms of impression formation. William G. Graziano is a Professor in the Department of Psychological Sciences at Purdue University. He received his Ph.D. in Psychology from the University of Minnesota in 1977. His research focuses primary on personality and interpersonal processes, with particular emphasis most recently on prosocial behavior. Janice R. Kelly is a Professor in the Department of Psychological Sciences at Purdue University. She received her Ph.D. in Social Psychology from the University of Illinois at Urbana-Champaign in 1987. Her primary research interest is in group performance and interaction, with an emphasis on how time pressure and affective influences affect group performance and interaction.`