Clinical Research Directory

Inclusion Criteria: * English literate * report heavy tobacco use (including nicotine e-cigarettes) for \>6 months * meet biochemical cut off for recent cigarette smoking or e-cigarette use * optimal body mass index Exclusion Criteria: * currently enrolled in other treatments * neuropsychiatric exclusions that could interfere with study participation, increase risk of adverse events, and/or induce deficient sleep * medical contraindications for fMRI, varenicline, and/or behavioral treatment * factors that cause deficient sleep and for which behavioral treatment has less benefit * women who are pregnant or nursing