Disciplinary segregation is a punishment that prison officials impose in response to inmate violations of prison rules such as assaulting another inmate or disrespecting an officer. Disciplinary segregation is distinct from other types of restrictive housing (e.g., supermax confinement, administrative segregation), but it is the most commonly used form of restrictive housing in most states. Inmates housed in disciplinary segregation typically spend 23 hours a day in a cell, with limited interaction with other inmates or prison staff. Inmates’ access to other privileges such as recreation, programming, and visitation is also restricted during their time in disciplinary segregation.
Prison officials have the discretion to place inmates found guilty of violations of the inmate rules of conduct in disciplinary segregation, and indeed, segregation is a common response to rule violations. It is expected that confinement in disciplinary segregation will deter inmates’ subsequent rule breaking, but some scholars argue that confinement in disciplinary segregation amplifies inmates’ misbehavior via labeling or by stimulating mental health problems that ultimately result in problem behaviors (e.g., rule violations). Despite these assertions, there is little evidence regarding the impact of disciplinary segregation on inmates’ behavior or mental health. Precise estimates of the extent of the inmate population exposed to disciplinary segregation (and their level of exposure), and studies of the factors that influence prison officials’ decision to place inmates in disciplinary segregation are also limited. The frequency with which disciplinary segregation is used, its greater cost compared to general population confinement, and calls for the equitable and effective use of restrictive housing in prisons by civil rights advocates, the U.S. Congress, and former President Obama underscore the need for further research on the topic.