“…Simulation training procedures, in which controlling stimuli or their approximations are presented outside their normal stimulus context, have been used to teach developmentally disabled individuals a variety of independent living skills, induding pedestrian (Page, Iwata, & Neef, 1976), public transportation (Neef, Iwata, & Page, 1978), clothing selection (Nutter & Reid, 1978), restaurant (van den Pol et al, 1981, telephone (Homer, Williams, & Stevely, 1987), leisure (Giangreco, 1983), and purchasing skills (Haring, Kennedy, Adams, & Pitts-Conway, 1987;Nietupski, Welch, & Wacker, 1983). In other investigations, however, skills acquired through simulation training have failed to generalize to natural community environments (Coon, Vogelsberg, & Williams, 1981;Freagon & Rotatori, 1982;Marchetti, McCartney, Drain, Hooper, & Dix, 1983;McDonnell, Homer, & Williams, 1984;Morrow & Bates, 1987). Such findings have led some authors to argue for in vivo instead of classroom-based instruction (Belmore & Brown, 1978;Brown et al, 1983;Ford & Mirenda, 1984; Hill, Wehman, & Horst, 1982;McDonnell et al, 1984;Vogelsberg, Williams, & Bellamy, 1982).…”