Abstract
Criminal thinking and identity were assessed in 55 federal prison inmates with no prior prison experience (novice inmates) and 93 inmates with at least one prior adult incarceration and 5 or more years in prison (experienced inmates). Changes on the Self-Assertion/Deception scale of the Psychological Inventory of Criminal Thinking Syles (PICTS) and Centrality subscale of the Social Identity as a Criminal(SIC) questionnaire were congruent with the prisonization hypothesis and a priori predictions that measures of criminal thinking and identity would rise in novice inmates between initial assessment and follow-up but would remain stable in experienced inmates. On the other hand, experienced inmates recorded significant gains on the In-Group Affect subscale of the SIC. Incarceration, it would seem, may promote prisonization in both novice and experienced inmates.
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