Abstract
The current study evaluated the effectiveness of modeling positive and negative reinforcement contingencies for three children with food selectivity and autism spectrum disorder. A differential reinforcement contingency was first modeled in which participants observed the model access preferred items and edibles upon the model’s consumption of six bites of nonpreferred foods. If participants’ acceptance of nonpreferred food did not increase, a nonremoval of the spoon procedure was modeled. Modeling differential reinforcement resulted in increased food acceptance for one participant and, for two participants, food acceptance increased after the nonremoval of the spoon procedure was modeled.