The Social World of Children Learning to Talk

Betty Hart, Ph.D., began her career in the early 1960s at the Institute for Child Development at the University of Washington, where she participated in the original demonstrations of the power of learning principles in influencing young children. With Montrose Wolf and Todd Risley, she introduced the basic procedures of adult attention and time-out now routinely taught and used in teaching and parenting. She also helped introduce the procedures for shaping speech and language widely used in special education. In 1965, she and Todd Risley began more than 35 years of collaborative work at the University of Kansas, when they established preschool intervention programs in poverty neighborhoods in Kansas City. Their study of what children actually do and say in day care and preschool and their publications on incidental teaching from the empirical base for contemporary child-centered teaching practices in preschool and special education. Dr. Hart is now Professor Emeritus of Human Development at The University of Kansas, and Senior Scientist at the Schiefelbusch Institute for Life Span Studies at The University of Kansas. She has remained focused on the language development of preschool children.

Todd R. Risley, Ph.D., began his career in the early 1960s at the Institute for Child Development at the University of Washington, where he participated in the original demonstrations of the power of learning principles in influencing young children. With Montrose Wolf and Betty Hart, he introduced the basic procedures of adult attention and time-out now routinely taught and used in teaching and parenting. He also helped introduce the procedures for shaping speech and language widely used in special education. In 1965, Hart and Risley began more than 35 years of collaborative work at the University of Kansas, when they established preschool intervention programs in poverty neighborhoods in Kansas City. Their study of what children actually do and say in day care and preschool and their publications on incidental teaching from the empirical base for contemporary child-centered teaching practices in preschool and special education. Before his death in 2007, Dr. Risley was Professor Emeritus of Psychology at the University of Alaska and Senior Scientist at the Schiefelbusch Institute for Life Span Studies at The University of Kansas. He served on many national boards and commissions, as Editor of the Journal of Applied Behavior Analysis, as President of the Association for Advancement of Behavior Therapy and of the behavioral division of the American Psychological Association, and as Alaska's Director of Mental Health and Developmental Disabilities.