Abstract
The sensitivity of the Psychological Inventory of Criminal Thinking Styles (PICTS) to psychotherapeutically assisted change was evaluated in a series of three studies. In the first study, a repeated-measures analysis of variance (ANOVA) revealed significant group (participant-waiting list) and time (pretest-posttest) effects, and a paired t test indicated significant reductions on the PICTS Current Criminal Thinking scale in group participants. In the second study, inmates from four different settings who were participating in programs of differing length and content achieved statistically significant temporal reductions on the Current and Historical Criminal Thinking scales. Results from the third study showed that significant pre-post reductions on the Current Criminal Thinking scale were specific to good-prognosis participants.
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