A psychometric reevaluation of the TCU criminal thinking scales (CTS)

In the United States, approximately 9 million people cycle in and out of jail and more than 600,000 people are released from prison each year. Unfortunately, the reentry process includes several barriers people must overcome (e.g., criminal thinking) to achieve adequate psychosocial functioning. As such, valid and reliable assessments that allow correctional staff to monitor clients' progress in treatment and test program effectiveness are paramount to reducing this major public safety concern. The TCU Criminal Thinking Scales (CTS) are a widely used assessment of criminal thinking in correctional settings. This study reevaluated the psychometric properties of the TCU CTS using Item Response Theory. Results showed the TCU CTS had good internal reliability and each scale loaded onto one factor. Item level analysis revealed most items adequately fit the model, generally measuring moderate levels of criminal thinking. Furthermore, several TCU CTS scales were negatively correlated with motivation for treatment and psychosocial functioning.