Publication year: 2011
Source: Addictive Behaviors, In Press, Accepted Manuscript, Available online 5 July 2011
Audrey A., Klein , Valerie J., Slaymaker , John F., Kelly
Objective: Research on instruments designed to measure endorsement of 12 step beliefs and practices among individuals with substance use disorders is virtually nonexistent. The goal of this study was to examine the psychometric properties of a novel instrument called the 12 Step Affiliation and Practices Scale (TSAPS) using a sample of young adults receiving 12 step-based residential treatment for alcohol and drug dependence. Method: As part of a naturalistic treatment outcome study, 300 young adults receiving residential treatment completed the TSAPS and several other assessments during and after treatment. Analyses of the TSAPS examined its factor structure, internal consistency, sensitivity to change over…
Research highlights: ► The Twelve Step Affiliation and Practices Scale (TSAPS) is a newly developed measure of 12 step affiliation assessing endorsement of 12 step beliefs, practice of the 12 steps and engagement in other 12 step-related behaviors. ► The psychometric properties of the TSAPS were examined using a sample of young adults attending 12 step-based alcohol and drug treatment. ► An exploratory factor analysis of the TSAPS revealed a four factor structure accounting for over 60% of the variance. Cronbach’s alpha for the scale and factors was very high, indicating high internal consistency. ► Convergent validity of the TSAPS was demonstrated through significant and positive correlations with scales of treatment attitudes, commitment to sobriety, and 12 step expectations. ► In a multiple regression model predicting the percentage of abstinent days at 6months posttreatment, the total TSAPS score at 3months emerged as significant, thus demonstrating predictive validity.