Addictive Potential of LCCs in Dual Users

Eligibility Details: Inclusion Criteria: - Current regular dual user of little cigars/cigarillos (LCCs) and cigarettes, defined as: (a) report smoking cigarettes on ≥ 8 of the past 30 days, and (b) report smoking unaltered LCCs (without marijuana) on ≥ 8 of the past 30 days. - Able to speak, read and understand English - Age 18-34 years of age - Stable residence (not planning to move during study period) - Not intending to quit smoking cigarettes or LCCs within the next 2 weeks - An expired carbon monoxide (CO) level of at least 4 ppm of expired air to verify smoking status Exclusion Criteria: - Pregnant for women (verified by urine pregnancy test at Visits 1 and 2) - Current use of (or plans to use in the next 2-3 weeks) nicotine replacement products or cessation products (e.g., bupropion) to minimize confounding effects of another product) - Positive breath alcohol screen (breath alcohol level (BAL) > 0 g/ml; one re-test allowed; assessed at Visits 1, 2, and 3) - Illicit drug use other than marijuana (verified by positive drug toxicology test at Visits 1 and 3; one re-test allowed) - Met criteria for Cannabis Dependence assessed by the Cannabis Use Disorders Identification Test-Revised (CUDIT-R)