Why were penitentiaries created in Pennsylvania and New York during the early 19th century?

In the early 19th century, penitentiaries were established in Pennsylvania and New York as a direct response to the appalling conditions and corruption found in local prisons of the late 18th century. This movement was driven by public outrage and the advocacy of reformers such as John Howard and the philosopher Jeremy Bentham, who sought to transform prisons into institutions for punishment and personal reform.1

The fundamental goal of these new penitentiaries was to rehabilitate offenders by preventing them from learning criminal habits from one another. This led to two competing management philosophies:21

• The Pennsylvania System: Implemented at Eastern State Penitentiary, this method relied on solitary confinement. It was believed that total isolation would force the offender into penitence, which would ultimately result in rehabilitation.31
• The Auburn System: Developed at Auburn Prison, this method allowed prisoners to work together during the day but required strict silence and solitary confinement at night to prevent the reinforcement of criminal behavior through social contact.21

Both systems represented a shift toward the systematic, institutionalized management of criminals, prioritizing the moral transformation of the individual over mere incarceration.1