Add to ORKGThe present study compares the effects of providing choice between activities or between materials for completion of activities on the on-task behavior of 4 boys with autism spectrum disorders. Results showed that the participants displayed higher levels of on-task behavior during the choice conditions than in the no-choice condition. However, the type of choice opportunity did not seem to have a differential effect. Key words: autism spectrum disorders, choice opportunities, on-task behavior _______________________________________________________________________________ Research with individuals with autism spec-trum disorders (ASDs) indicates that providing choice opportunities may increase on-task behavior (e.g., Moes, 1998; Watanabe &am...