The Reliability and Validity of Substance Abuse Subtle Screening Inventory (SASSI-3)

The aim of this study was to survey the validity and reliability of the Substance Abuse Subtle Screening Inventory-3 (SASSI-3). 680 studentsfromthe universities of Tehran and 102 addicted patients of refered to substance abuse treatment centers in Tehran, were included in the study. The results showed opportune reliability and validity for SASSI-3. In this study, internal consistency coefficient (Chronbach’s alpha) for SASSI-3 was obtained as 0.74. This relatively high level of Chronbach’s alpha showes a relatively high level of reliability. Correlation results as between SASSI-3 scalesshowed convergence of SASSI-3 at measurement of single phenomenon. The positive correlation of SASSI-3 a nd AAS sh ow o p po rt un e convergent validity. The difference of t-test scores of students and addicted patients on SASSI-3 and the difference of main effect of group variable on SASSI-3 scales between students and addicted patients according to Mult i-va r ia t e a n alysis of var ia n ce (MANOVA) showed opportune discriminant validity and Az (discriminant index) of 0.97 for SASSI-3 showed opportune diagnostic validity.