Children with an autism spectrum disorder (ASD) may play with limited objects or toys, making it difficult for teachers to identify reinforcers to use in teaching new skills. The goal of this study was to alter children's preferences from highly preferred toys to toys that were originally less preferred using an observational pairing procedure.…

Co-workers of three job trainees with mental retardation used coincidental training procedures while completing their own jobs. Coincidental training resulted in improved accuracy of salad-making skills, but skill acquisition was very slow; subsequently, a model and a quality-control check were added, resulting in higher performance levels. (JDD)