“…They range from the more descriptive and often clinically interesting but empirically unconvincing (e.g., Davids & Salvatore, 1976 ;Klinge, Piggott, Knitter, & O'Donnell, 1986 ;Levy, 1969), to a few controlled studies of specific aspects of inpatient treatment (Kazdin, Esveldt-Dawson, French, & Unis, 1987 ;Winsberg, Bialer, Kupietz, Botti, & Balka, 1980). Many of these outcome studies have been reviewed by Maluccio and Marlow (1972), Durkin and Durkin (1975), Blotcky, Dimperio, and Gossett (1984), and Pfeiffer and Strzelecki (1990). Blotcky et al and Pfeiffer (1989) commented critically on the methodological limitations of studies in the field.…”