 Relapse following cigarette abstinence remains a common problem for smokers attempting to quit. Extensive research has focused on the acute withdrawal phase that occurs within the first 48 hours to one week; however, this study will focus on longer durations of abstinence. Current clinical wisdom suggests that the rate of relapse decreases as the length of abstinence increases; however, animal studies indicate that reactivity to drug-related cues actually increases over time, an effect that has not been studied in humans. 