Dependence on tobacco derived nicotine is a major public health problem. Substance users who
complete training in mindfulness subjectively report increased patience and improved motor
control over their impulses. Yet, no studies have tested this perceived benefit with
behavioral measures of impulse control. The investigators are conducting a randomized
controlled clinical trial, which compares Cognitive-Behavioral Therapy and Mindfulness
Training for tobacco smokers, using behavioral measures to investigate the effects of
mindfulness training on impulsivity and inhibitory control.