Targeting Insomnia to Improve Outcomes in Adults With Problematic Cannabis Use

Inclusion Criteria: Self-reported chronic insomnia Insomnia Severity Index (ISI) score indicative of at least mild insomnia Cannabis Use Disorder Identification Test-Revised (CUDIT-R) indicative of at least problematic cannabis use A positive urine drug screen (UDS) for cannabis Self-reported use of cannabis to manage insomnia 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 Individuals judged unable to provide informed consent (e.g., intoxication, mental incompetence) Diagnosis or high suspicion of a sleep disorder other than insomnia Diagnosis of psychotic disorder, bipolar disorder, or post-traumatic stress disorder 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.