We examined the effectiveness of Barton and Ascione's (1979) package for training sharing in a dassroom setting with six behaviorally handicapped preschool children, four of whom were also developmentally delayed. Individual responses in sharing and not sharing were examined. Training consisted of initial instructions, modeling, and behavioral rehearsal, followed by teacher prompts and praise regarding sharing directly in a dassroom free play period. Introduction of training in a multiple-baseline design across three pairs of children resulted in substantial increases in sharing for five of the six children. Results for negative interactions were less dear but suggested that concomitant decreases occurred for the same five children. The response analysis indicated that (a) individual components of sharing (offers, requests, and acceptances) all increased with training; (b) most children were more likely to initiate sharing through requests than through offers; (c) the proportion of sharing initiatives accepted by peers increased with training despite a much greater absolute number of initiatives; and (d) of the three negative behaviors (opposing play, taking without asking, and aggression) examined as incompatible with sharing, the most prevalent response was opposing other children's play. Individual differences in initial social repertoires and responsiveness to training were examined with respect to their implications for research and practice. Overall, the findings provide an encouraging indication of an intervention program for children with behavioral, social, and developmental handicaps.DESCRIPTORS: sharing, social behavior, dassroom behavior, preschool children Play in early childhood means spending time with other children, exploring and manipulating objects, pretending, and acting out roles (Asher, 1978;Fein, 1978). One skill that is integral to interactive play is sharing, in which children offer and exchange toys, materials, and play opportunities with one another. Descriptive studies show that sharing occurs naturally in the play of normal preschool children and that sharing is very likely