Psychometric Properties of the FTCD and Brief WISDM: Support for Validity in a Legal-System-Involved Sample.

The Fagerström Test of Cigarette Dependence (FTCD) and Brief Wisconsin index of smoking dependence motives (WISDM) are two widely used measures of nicotine dependence, though previous research has shown mixed results for their internal consistency and factor structure. The current study used a unique sample of criminal-legal-involved participants who generally have moderate to high levels of nicotine dependence. The current study found that the FTCD displayed poor internal consistency, a poor fit for a single-factor model, but mixed support for two two-factor models. The Brief-WISDM was found to have strong internal consistency, a poor fit for a single-factor model, but mixed fit for an 11-factor model and good item discrimination.