4 Weeks Post-Quit (Visit 3). Participants will complete self-report questionnaires on a laptop/tablet computer; and expired CO and weight will be measured in a private room to ensure confidentiality. Participants will be compensated for the completion of the in-person assessments, which will take approximately 45-60 minutes to complete. When participants return the phone they will be compensated according to the compensation schedule described above. Participants who do not attend will be contacted by phone to obtain their self-reported smoking status and to request that the study phone be returned by mail or in-person at the next visit.