“…This massive increase in the prison population led to a proliferation of research into explanations of this greater than fivefold increase in the last quarter century, after a hundred years of near stability. Some of this research focused on such factors as changes in crime and arrest rates (Cohen & Canela-Cacho, 1994;Greenfeld, Beck, & Gilliard, 1996;Langan, 1991), some on demographic factors (Langan, 1991;MacKenzie, Tracy, & Williams, 1988), the war on drugs (Chambliss & Chambliss, 1994;Langan, 1991;Mauer, 2002), or prosecutorial policies (Bureau of Justice Assistance, 1996). A substantial amount of research also focused on the impact of sentencing reforms (Austin, Jones, & John, 1995;Blumstein, 1998;Furniss, 1996;Mauer, 2002;Sabol & Lynch, 1997;Wicharaya, 1995;Zimring & Hawkins, 1991).…”