The current study evaluated the effectiveness of a multimedia social skills program, Superheroes Social Skills for Children with Autism, in increasing the social engagement skills of 4 elementary-aged students with an autism spectrum disorder. This program incorporates several evidence-based practices into one comprehensive curriculum, namely video-modeling, peer-mediated instruction, self-management strategies, and usage of social narratives. The intervention was implemented for 11 weeks with training occurring for 30 minutes twice per week in a public elementary school. Results indicated that the Superheroes Social Skills program was successful in enhancing participants' social engagement with peers. Larger effects were demonstrated in the generalization setting (i.e., recess). Effects were maintained over a 2-week follow-up period. The percentage of non-overlapping data points (PND) was a more conservative measure of effectiveness in comparison to effect sizes. There were also positive increases in participants' social skills and competencies as reported by parents and teachers on the Social Responsiveness Scale and Autism Social Skills Profile. The intervention was easy to implement with fidelity and was rated as being socially valid, acceptable, and effective by all consumers. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]