Indefinite solitary confinement: a large-scale experiment in sensory deprivation and social isolation.

Recently, two cases concerning the constitutional rights of people in prison came to public light. They involve two U.S. political prisoners: Mumia Abu-Jamal who is serving a life sentence at a facili...

Solitary confinement is the practice of isolating inmates in closed cells for 22-24 hours a day, virtually free of human contact, for periods of time ranging from days to decades.

The majority of those in solitary confinement were given the punishment for nonviolent, low-level offenses such as having unauthorized books or disobeying an order or growing their mustaches too long.