There is currently a lack of research evaluating the efficacyof negative reinforcement by means of terminating mealtimeand exiting the meal location. In this study, the contingencywas developed so that after a required number of bites had beenmet, the participant would exit not only the meal but also themealtime area. A changing criterion design was chosen due tothe ease at which the number of acceptable bites can be modified and increased over the course of the intervention.