Counselor Education and Supervision (ExCES)
School of Education
Bradley T. Erford
William J. Casile
Drug Abuse Screening Test, DAST-20, psychometric synthesis
Numerous research articles have reported differing data on the psychometric properties of the 20-item version of the Drug Abuse Screening Test (DAST-20, Skinner, 1982a). Aggregating this diverse information can lead to a better understanding of how to use and interpret the instrument with clients and research participants. In this psychometric synthesis, evidence of reliability and validity of the DAST-20 scores was aggregated in order to provide a more comprehensive summary of the psychometric properties of the instrument to better inform counseling professionals when using the DAST-20. Overall, the available evidence indicates that the DAST-20 produces reliable and valid scores when screening for drug abuse consequences. However, data was limited and future research is needed to further assess the psychometric properties of the instrument, including internal consistency, test-retest reliability, convergent validity, diagnostic validity, and structural validity. Implications for professional counselors and counselor research are discussed.
Johnson, E. (2021). Psychometric Synthesis of the Drug Abuse Screening Test 20-Item Version (DAST-20) (Doctoral dissertation, Duquesne University). Retrieved from https://dsc.duq.edu/etd/2014