When prison inmates break the rules, they may be placed in solitary confinement – sometimes for 24, 48 or 72 hours. Although it is frequently criticized, disciplinary segregation is still widely used in Quebec’s provincial jails.
The purpose of disciplinary measures is to encourage offenders to change their behaviour and not repeat the misconduct (such as violence, insubordination or possession of prohibited items). But does segregation achieve this?
A recent meta-analysis casts serious doubt on the effectiveness of disciplinary confinement: it does not, in fact, reduce the likelihood of further misconduct once the offender is returned to the general prison population. What's more, it may actually increase recidivism.
“Across the groups studied, the overall effect was nil, or even negative,” said study co-author Dr. Alexandre Dumais, a clinical professor in Université de Montréal's Department of Psychiatry and Addiction.
When inmates placed in solitary confinement were compared with inmates with similar criminal profiles who were not, it was found that the likelihood of repeated misconduct was higher in the first group, he noted.