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Home > Personality and substance use: psychometric evaluation and validation of the Substance Use Risk Profile Scale (SURPS) in English, Irish, French, and German adolescents.

Jurk, Sarah and Kuitunen-Paul, Sören and Kroemer, Nils B and Artiges, Eric and Banaschewski, Tobias and Bokde, Arun L W and Büchel, Christian and Conrod, Patricia and Fauth-Bühler, Mira and Flor, Herta and Frouin, Vincent and Gallinat, Jürgen and Garavan, Hugh and Heinz, Andreas and Mann, Karl F and Nees, Frauke and Paus, Tomáš and Pausova, Zdenka and Poustka, Luise and Rietschel, Marcella and Schumann, Gunter and Struve, Maren and Smolka, Michael N (2015) Personality and substance use: psychometric evaluation and validation of the Substance Use Risk Profile Scale (SURPS) in English, Irish, French, and German adolescents. Alcoholism Clinical and Experimental Research , 39 , (11) , pp. 2234-2248.

BACKGROUND
The aim of the present longitudinal study was the psychometric evaluation of the Substance Use Risk Profile Scale (SURPS).

METHODS
We analyzed data from N = 2,022 adolescents aged 13 to 15 at baseline assessment and 2 years later (mean interval 2.11 years). Missing data at follow-up were imputed (N = 522). Psychometric properties of the SURPS were analyzed using confirmatory factor analysis. We examined structural as well as convergent validity with other personality measurements and drinking motives, and predictive validity for substance use at follow-up.

RESULTS
The hypothesized 4-factorial structure (i.e., anxiety sensitivity, hopelessness, impulsivity [IMP], and sensation seeking [SS]) based on all 23 items resulted in acceptable fit to empirical data, acceptable internal consistencies, low to moderate test-retest reliability coefficients, as well as evidence for factorial and convergent validity. The proposed factor structure was stable for both males and females and, to lesser degree, across languages. However, only the SS and the IMP subscales of the SURPS predicted substance use outcomes at 16 years of age.

CONCLUSIONS
The SURPS is unique in its specific assessment of traits related to substance use disorders as well as the resulting shortened administration time. Test-retest reliability was low to moderate and comparable to other personality scales. However, its relation to future substance use was limited to the SS and IMP subscales, which may be due to the relatively low-risk substance use pattern in the present sample.


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