This now classic text remains a cornerstone of continued efforts to develop inclusive peer play programs for children on the A01tism spectrum. This second edition has been thoroughly revised to reflect the significant new developments that have transpired in the field of A01tism. Notable additions to the text include an updated description of the Integrated Play Groups (IPG) model and related research; an examination of the nature of A01tism and play from past to present, with major updates on incidence, diagnosis, and characteristics; and a comprehensive review of play interventions.