[Basler drug- and alcohol-questionnaire. First experiences in the construction of a test instrument for evaluation of dependency of drug-and/or alcohol-consumers (author's transl)].

Abstract

In order to provide an estimation of the degree of drug and/or alcohol dependency the authors designed a questionnaire. In this paper the basic steps of item analysis, factor analysis and calculation of reliability (split-half-method) are reported. After elimination of 6 items out of 65 the item-metric and factorial characteristics as well as the… (More)

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