Study Inclusion and Exclusion Criteria
INCLUSION CRITERIA To be eligible to participate in the study, prospective participants must: 1) Be 18 years of age or older; 2) Have a substance use disorder (SUD) or documented high-risk use history for stimulants or cannabis, confirmed by DSM-5 criteria; 3) Have stated interest in reducing and/or stopping use; 4) Have and be able to use a smartphone and agree to download and use the Affect app as part of treatment and study-related procedures; 5) Have a health insurance plan (or Medicaid) to ensure that participants have access to medical care if needed; 6) Be English speaking and have reading capacity sufficient to understand explanations of study procedures and the informed consent to participate; 7) Be able to freely give informed consent and be willing to electronically sign the digital informed consent to participate in the study; 8) Be willing to comply with study procedures, including use of the Affect app consistent with the study protocol and therapeutic activities.
EXCLUSION CRITERIA Individuals will be precluded from enrolling in the study if they endorse (or if there is documentation of) any of the following conditions. Already enrolled participants will be withdrawn from study participation upon the emergence of any excluded condition (except pregnancy): 1)Serious medical diagnoses (e.g., seizure, stroke, other chronic condition); 2) Serious mental illness (e.g., schizophrenia, active suicidality); 3) Moderate- to severe-level opioid use disorder; 4) Pregnancy; 5) Be concurrently receiving other behavioral or pharmacological services for the treatment of an SUD; 6)Have pending legal action or other situation that could inhibit consistent participation in the study or in study activities. Additionally, if your application is not accepted or you choose not to participate after your questionnaire has been submitted, any information you provide will be destroyed.