Study
Duwe and McNeeley (2021) employed a natural experiment to examine the effects of Intensive Supervised Release (ISR) on recidivism, using a sample of 1,818 individuals released from Minnesota prisons in 2018. In July 2018, there was a policy change and the Minnesota Department of Corrections (MNDOC) adopted criteria for ISR assignment that was based solely on the actuarial risk of recidivism. At the time of the study, there were persons released to standard supervision since the policy changed who would have been placed on ISR before July 2018. Likewise, there were individuals released to ISR since July 2018 who would have been placed on standard supervision before July 2018. The policy change served as a counterfactual that underscored what likely would have happened in the absence of ISR.
To be eligible for ISR (the treatment group), those returning from prison had to meet one of the following criteria: 1) a person labeled a predatory offender with Level 3 designation by the End of Confinement Review Committee, 2) a violent recidivism score of 30 percent or higher, 3) a sex offense recidivism score of 4.3 percent or higher, or 4) a violent recidivism risk score between 26 percent and 29 percent. To be eligible for standard supervision (the control group), those being released must have not completed the entirety of their sentence and must have met the new ISR criteria. There were some individuals whose supervision assignment was at odds with the new criteria because of the gradual implementation of the new policy. The sample consisted of individuals released from prison who were placed on ISR and/or met the ISR criteria implemented on July 1, 2018.
ISR consisted of four phases that required varying degrees of contact with the supervision agents. Those in the control group received standard supervision and were assigned a supervising officer who was responsible for monitoring and ensuring their compliance with the conditions ordered by the court.
Of the 1,818 individuals released, 1,423 were placed on ISR and 395 individuals placed on standard supervision. Of those who received ISR (the treatment group), 39.9 percent were Black, 36.7 percent were white, 17.1 percent were American Indian, 5.8 percent were Hispanic, and 0.6 percent were Asian. No age data were provided. The great majority (96.8 percent) of those in the treatment condition were male, had an average violent recidivism risk score of 24.1, an average sex offense recidivism risk score of 3.5, an average nonviolent recidivism risk score of 68.5, and an average felony recidivism risk score of 60.4. Of those who were on standard supervision (the control group), 40.0 percent were white, 40.0 percent were Black, 15.2 percent were American Indian, 4.1 percent were Hispanic, and 0.8 percent were Asian. No age data were provided. The great majority (99.5 percent) of those in the control condition were male, had an average violent recidivism risk score of 37.2, an average sex offense recidivism risk score of 1.9, an average nonviolent recidivism risk score of 80.0, and an average felony recidivism risk score of 68.8. There were significantly more males in the control group, compared with the treatment group. The control group averaged a significantly higher violence recidivism risk score, but the treatment group had a significantly higher sex offense recidivism risk score.
Twelve-month recidivism outcomes were used to evaluate the effectiveness of the ISR program. The five outcomes of interest were 1) rearrest for any offense, 2) reconviction for any offense, 3) reconviction for a violent offense (including sex offenses), 4) reconviction for a felony offense, and 5) technical violation revocation. Data on arrests and convictions were obtained electronically from the Minnesota Bureau of Criminal Apprehension. Technical violation revocation data were derived from the Minnesota Department of Corrections’ Correctional Operations Management System. The independent variable was a binary variable indicating whether the individual was placed on ISR or standard supervision. Recidivism risk scores were used as control variables. Violent, nonviolent, and felony recidivism risk data derived from the Minnesota Screening Tool Assessing Recidivism Risk 2.0, and sex offender recidivism data derived from the Minnesota Sex Offender Screening Tool–4. Cox regression was used to estimate the impact of ISR on recidivism by controlling for known risk factors of reoffending. Controls were included to account for history effects (pre and post policy indicator) and gradual implementation of the change in ISR policy (indicator of compliance with new ISR criteria). No subgroup analysis was conducted.