“…Sustained improvement of 60-90% of patients has been reported in reviews of the literature and clinical reports, and about a dozen single-and double-blind studies of single patients also report positive results for haloperidol (Abuzzahab and Anderson, 1973;Bruun et al, 1976;Golden, 1977;Nee et al, 1980;Nomura and Segawa, 1979;Shapiro et al, 1978;Wassman et al, 1977). Well-controlled, comparative, crossover and double-blind studies (Abuzzahab and Anderson, 1973;Shapiro, , 1978Shapiro and Morris, 1978;Shapiro et al, 1978) have not been done, and some clinicians describe less favorable results (Cohen et al, 1980;Tibbetts, 1981).…”