“…The current study seeks to address this gap in knowledge and advance our understanding of the use of administrative segregation in U.S. prisons. Rather than examine the number of inmates held in this setting (Beck, 2015;Mears & Bales, 2010;Resnik et al, 2018) or the characteristics that its inhabitants possess (Butler & Steiner, 2016;Cochran et al, 2018;Labrecque, 2018;Logan et al, 2017), this investigation proceeds by systematically reviewing the administrative segregation policy regulations obtained from state and federal prison systems. Most of the documents reviewed apply the term administrative segregation to refer to this type of confinement, although some refer to this practice as administrative confinement, administrative control, administrative detention, administrative housing, close management, intensive control, local control, maximum control, and maximum custody.…”