“…Phencyclidine (PCP) is adrug of abuse that has been reported to have detrimental effects during development (Golden, Kuhnert, Sokol, Martier, & Bagby, 1984; Golden, Kuhnert, Sokol, Martier, & Williams, 1987;Strauss, Modaniou, & Bosu, 1981). Prenatal PCP exposure produces agitation, rapid state changes (Chasnoff, Burns, Hatcher, & Burns, 1983), hypertonicity (Strauss et al, 1981), possibly growth retardation (Tabor, Smith-Wallace, & Yonekura, 1990), and temperament and sleep problems (Wachsman, Schuetz, Chan, & Wingert, 1989) in human infants.…”