“…Numerous studies have found that persons with mental disorders are overrepresented in prisons and jails, with prevalence estimates ranging from 1.8% to 22.0%, depending on how mental disorder is defined and which demographic groups are studied (Bureau of Justice Statistics, 1999;Lamb and Grant, 1982;Lamb and Weinberger, 1998;Palermo et al, 1991;Steury, 1991;Teplin, 1990;Wachholz and Mullaly, 1993;Whitmer, 1980). Further, Palermo et al (1991:103) reported statistically significant overlap between mental hospital and jail populations over a 15-year period, leading them to conclude that "there may be a two-way flow of people from prison to the mental health system and back again, which indicates that many of the jail/ prison inmates may be inappropriately sentenced or held because they have incapacitating mental illnesses" (but see Steadman et al, 1984).…”