Targeting Insomnia to Improve Outcomes in Adults With Problematic Cannabis Use

INCLUSION CRITERIA - 21 years of age and older, the age needed to obtain full legal access to cannabis in Michigan - Self-reported chronic insomnia (nighttime symptoms of difficulty initiating and/or maintaining sleep and/or early morning awakenings on ≥3 nights for ≥3 months with daytime impairment), consistent with DSM-5 diagnosis of Insomnia Disorder - Insomnia Severity Index (ISI) score ≥11, indicative of at least "mild" insomnia - A positive urine drug screen (UDS) for cannabis33 - Self-reported use of cannabis at least three times weekly for the past month - Stable residence (e.g., stable sleep arrangements), consistent access to Wi-Fi, and ability to travel to Ann Arbor for sleep laboratory assessments EXCLUSION CRITERIA - Individuals who do not understand English (read and spoken) - Individuals judged unable to provide willing to sign a consent form (e.g., intoxication, mental incompetence) - Diagnosis or high suspicion of a sleep disorder other than insomnia - Lifetime diagnosis of psychotic disorder or bipolar disorder; current post-traumatic stress disorder that directly interferes with sleep - Terminal or progressive physical illness (e.g., cancer) or neurological degenerative disease (e.g., dementia) - Use of medications known to have initiated their insomnia (e.g., steroids) - Previous receipt of CBTi - Self-reported pregnancy - Self-reported regular work schedule of rotating or night (3rd) shift work - Other conditions and situations, medical or otherwise, that preclude meaningful and/or safe participation in CNT/SHE and study procedures Always talk to your doctor about whether this trial is right for you.