| Abstract: | The response latency of following directions by an 8-yr-old boy from a class for emotionally disturbed children was modified by the contingent application of a token system. To demonstrate reinforcer effectiveness, a multiple baseline approach was used. Measures were obtained for the time elapsed between the presentation of verbal directions and five performances: (1) entering the experimental room, (2) putting toys away, (3) beginning academic work, (4) putting toys away again, and (5) returning to the classroom and completing preparations for leaving school. These five measures were placed on the token system at three different times. The results demonstrated that four of the five performances were clearly affected by the token system as their response latency for following directions decreased substantially. |
