This paper presents findings from the final two years of a four-year study investigating a manualized social treatment program for high-functioning children with autism spectrum disorders. The study sought to (1) replicate and expand findings from years one and two; (2) compare outcomes of participants who received response-cost feedback versus non-categorical feedback; and (3) provide further evidence of program feasibility. Results indicated significant improvements in social skills and problem behaviors, however no significant differences for face emotion recognition. Measures of several socially-related behaviors yielded mixed results based on rater. While parent ratings did not appear to favor one feedback format, staff ratings appeared to favor the response-cost format on some measures. Results also provided support for program feasibility.