The Impact of E-liquid Nicotine Content on Reinforcement in Current Smokers

Inclusion Criteria: * At least 18 years old * Daily cigarette smoking * Have tried vaping devices on a minimum of one lifetime occasion Exclusion Criteria: * Unwilling to use a vaping device during the session * Break alcohol level \> 0.01 (g/dL) * Pregnant, trying to become pregnant, or breastfeeding * Systolic BP greater than or equal to 160 mm/Hg or below 90 mm/Hg * Diastolic BP greater than or equal to 100 mm/Hg or below 50 mm/Hg * Heart rate greater than or equal to 105 bpm or lower than 45 bpm * A current upper respiratory infection, recent cardiac event (in the last year), Buerger disease, irregular heartbeat or arrhythmia within the last year, previous allergic or adverse reaction to nicotine