Association for Behavior Analysis International

The Association for Behavior Analysis International® (ABAI) is a nonprofit membership organization with the mission to contribute to the well-being of society by developing, enhancing, and supporting the growth and vitality of the science of behavior analysis through research, education, and practice.

Leonard Green

Green Leo

Washington University in St. Louis


Dr. Leonard Green received his BA from City College of CUNY in l969, and his Ph.D. from SUNY at Stony Brook in 1974. He now is professor of psychology at Washington University in St. Louis. He is best known for his extensive and innovative research in behavioral economics and probability and delay discounting, in which he has published a considerable number of seminal papers in a wide range of journals. He is the author (with John H. Kagel and Raymond C. Battalio) of Economic Choice Theory: An Experimental Analysis of Animal Behavior and has edited three other books. He was editor of the Journal of the Experimental Analysis of Behavior from 2003 to 2007, and has been associate editor of this journal as well as of the Pavlovian Journal of Biological Science. He has served on a number of editorial boards including those of Behavior and Philosophy and Behaviour Analysis Letters. He is on the Society for the Experimental Analysis of Behavior board of directors, the executive board of the Society for the Quantitative Analyses of Behavior, the board of the Cambridge Center for Behavioral Studies, and the board of directors of Missouri Families for Effective Autism Treatment.




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