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Abstract
A 40 true-false item questionnaire was finalized by revising and validating the original TWWA scales reported by Lin and Dickinson. This newly developed questionnaire consists of two scales measuring the degree of chemical abuse and the level of community functioning. Each scale has an internal consistency of. 88, and all significantly discriminate three criterion groups: former addicts, their correspondents, and addiction workers. Demographic characteristics of the TWWA scales are also provided.