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Updated: Aug 2, 2026

Novel Apparatus and Method for Drug Reinforcement
Published on: August 20, 2010
The validity of the Self-Efficacy List for Drug Users (SELD)
G H De Weert-Van Oene1, M H Breteler, G M Schippers
1Julius Center for Patient Oriented Research, Utrecht University, The Netherlands. G.H.deWeert@jc.azu.nl
Abstract:
In this study we evaluated the psychometric properties of the Self-Efficacy List for Drug users (SELD). Exploratory and confirmatory factor analyses on separate subject samples revealed that drug-users' self-efficacy was best described by three correlated dimensions: environmental factors, negative mood, and positive mood. The validity of this three-factor solution was supported by the pattern of associations with severity of drug use as assessed by the Addiction Severity Index. In addition, lower self-efficacy scores were related to a higher number of days of experiencing problems related to drug use. In conclusion we state that the SELD is a reliable and valid instrument to measure abstinence self-efficacy in drug users.
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