Heart Rate Variability Biofeedback for Smoking Cessation

Eligibility Details: Inclusion Criteria: - Smoking ≥5 cigarettes, daily, for at least two years - expired carbon monoxide analysis of breath sample ≥8 ppm - elevated affective distress - motivation to quit - computer proficient Exclusion Criteria: - current use of other tobacco or nicotine products for recreation or to aid in cessation, use of pharmacological intervention for cessation, or current enrollment in a psychosocial intervention for smoking cessation - endorsement of current or past psychotic or manic symptoms indicative of bipolar spectrum or schizophrenia spectrum disorders and/or current suicidal or homicidal ideation - inability to provide written informed consent - current evidence of another substance use disorder - severe visual or hearing impairments - self-reported medical condition or medication use that may be contraindicated for participation in a HRVB or confound autonomic parameters: - self-reported medical issues of potential concern to nicotine patch users