ABA International Fellows
R. Douglas Greer
Dr. R. Douglas Greer has maintained an active research career for nearly four decades. Dr. Greer’s research has been closely linked to his application of learning principles to the education of disadvantaged children. That same research exemplifies the reciprocal relation between the science of learning and the practice of teaching. Dr. Greer’s published work includes over 100 articles in more than 20 different journals as well as seven books. His research topics have included verbal behavior, conditioned reinforcement, conjugate reinforcement, and systems management, to name a few. Perhaps the most original of Dr. Greer’s research contributions is the specification and use of a metric (the learn unit) for measuring teaching effectiveness. Worldwide appreciation of Dr. Greer’s contributions is evidenced by his appearances as Keynote Speaker at a long succession of conferences on several continents and many honors and awards, including those from the Association for Behavior Analysis International and the American Psychological Association.