| Todd Risley | |
| Birth Name: | Todd Robert Risley |
| Birth Date: | 8 September 1937 |
| Birth Place: | Alaska, United States of America |
| Death Place: | Alaska |
| Fields: | Psychology |
| Workplaces: | University of Kansas University of Alaska, Anchorage |
| Education: | San Diego State College University of Washington |
| Thesis Title: | The establishment of verbal behavior in deviant children |
| Thesis1 Url: | and |
| Thesis2 Url: | )--> |
| Thesis Year: | 1966 |
| Doctoral Advisors: | )--> |
| Academic Advisors: | Montrose Wolf |
| Known For: | Applied behavior analysis |
| Spouses: | )--> |
| Partners: | )--> |
Todd Robert Risley (September 8, 1937 – November 2, 2007) was an American psychologist. He is credited with helping to create the field of applied behavior analysis, and has been described as a "pioneer" in this field.[1] [2] He is known for the study he conducted with Betty Hart, who was his graduate student at the University of Kansas at the time, on the word gap between rich and poor children.[3] [4] He was also a co-founder and editor-in-chief of the Journal of Applied Behavior Analysis.[5]