This study evaluates the concurrent, convergent and discriminant validity between the MSI-X and five other instruments completed by 107 adults. Pearson correlation analysis with follow-up t-tests found concurrent validity between the MSI-X, Drug Abuse Screening Test (DAST-20), five Substance Abuse Subtle Screening Inventory (SASSI-3) subscales, a Diagnostic Statistical Manual (DSM) IV-TR Guided Marijuana Inventory, and two Addiction Severity Index variables. As evidence of MSI-X discriminant validity, no correlations were found with three alcohol measures. Convergent validity, determined by t-test associations between MSI-X total problems with SASSI-3 substance dependence scores, supported the MSI-X >= 6 scoring cutoff. Overall, the findings support MSI-X concurrent, convergent and discriminant validity.
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Northwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Zinbarg, Richard E.
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Pinsof, William
Quirk, Kelley
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Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Quirk, Kelley
Kendall, Ashley
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Northwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Kendall, Ashley
Goldsmith, Jacob
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Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Goldsmith, Jacob
Hardy, Nathan
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Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
Hardy, Nathan
He, Yaliu
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Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA
He, Yaliu
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Sabey, Allen
Latta, Tara
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Northwestern Univ, Family Inst, Evanston, IL USANorthwestern Univ, Dept Psychol, 102 Swift Hall,2029 Sheridan Rd, Evanston, IL 60208 USA