The term "Separate Prison" refers to a type of correctional facility designed to isolate inmates from one another. This approach aims to prevent prisoners from interacting, which can reduce the influence of gangs and promote individual rehabilitation. The concept emerged in the early 19th century, influenced by the Pennsylvania System of prison reform. In a Separate Prison, inmates typically spend most of their time in solitary confinement, engaging in work or educational activities alone. This model emphasizes reflection and personal responsibility, but it has faced criticism for potential psychological effects on inmates. The Auburn System is often contrasted with this model, as it allows for group activities.