“…In the last 10 years there has been renewed focus on individuals with developmental disabilities, including individuals with moderate and severe mental retardation (Johnson & Atkins, 1987;Szymanski & Danek, 1985;Wehman, Kregel, & Seyfarth, 1985). Other types of disabilities that have received increased attention include learning disabilities (Hershenson, 1984;Miller, Mulkey, & Kopp, 1984), head injuries (Leland, Lewis, Hinman, & Carrillo, 1988;Mc-Mahon, Shaw, & Mahaffey, 1988), chronic mental illness (Cykana, 1987;Fishbein, 1988;Rogers, Anthony, & Jansen, 1988), sensory impairments (Danek, 1983;Vander Kolk, 1983), and life-threatening conditions, such as acquired immune deficiency syndrome (AIDS) (Ward-Wimmer, 1988).…”