Michael L. Commons is Lecturer and Research Associate in the Department of Psychiatry at Harvard Medical School, Massachusetts Mental Health Center, and he is also Director of the Dare Institute. He did his undergraduate work at the University of California at Berkeley, and then at Los Angeles, where in 1965 he obtained a BA in mathematics and in psychology. In 1967, he received his MA, and in 1973, his PhD in psychology from Columbia University. Before coming to Harvard University in 1977 as a Postdoctoral Fellow, and then becoming Research Associate in psychology, he was an Assistant Professor at Northern Michigan University. He has co-edited Quantitative Analyses of Behavior, Vols. 1-10, and Beyond Formal Operations: Late Adolescent and Adult Cognitive Development. His area of research interest is the quantitative analysis of the construction and understanding of reality as it develops across the life span, especially as these elements affect decision processes, life-span attachment and alliance formation, and ethical, social, cross-cultural, educational, legal, and private sectors.
John A. Nevin, Professor of Psychology at the University of New Hampshire since 1972, received his PhD from Columbia University in 1963 and served on the faculty at Swarthmore College and Columbia University. He has served as Editor of the Journal of the Experimental Analysis of Behavior and co-editor of previous volumes in this series. His research interests include schedules of reinforcement, choice behavior, stimulus control, and psychophysics.