This study evaluated the effectiveness of a 7-month cognitive behavioral intervention for the facilitation of the social-emotional understanding and social interaction of 15 high-functioning children (8 to 17 years old) with autism. Intervention focused on teaching interpersonal problem solving, affective knowledge, and social interaction. Preintervention and postintervention measures included observations of social interaction, measures of problem solving and of emotion understanding, and teacher-rated social skills. Results demonstrated progress in three areas of intervention. Children were more likely to initiate positive social interaction with peers after treatment; in particular, they improved eye contact and their ability to share experiences with peers and to show interest in peers. In problem solving after treatment, children provided more relevant solutions and fewer nonsocial solutions to different social situations. In emotional knowledge, after treatment, children provided more examples of complex emotions, supplied more specific rather then general examples, and included an audience more often in the different emotions. Children also obtained higher teacher-rated social skills scores in assertion and cooperation after treatment. The implications of these findings are discussed in terms of the effectiveness of the current model of intervention for high-functioning children with autism.