Intervention for Managing Physical Reactions to Overwhelming Emotions
The clinical trial aims to conduct a feasibility, acceptability, and usability clinical trial of a modular CBT-based and technologically enhanced intervention for people with an SUD and recently enrolled in IOP, probe target engagement and change in clinical outcomes, and examine attrition rates in IOP.

This study will enroll 40 adults who are currently enrolled in IOP, have a substance use disorder, and experience elevated anxiety. 20 individuals will be randomized to the experimental intervention, "Intervention for Managing Physical Reactions to Overwhelming Emotions" (IMPROVE), and 20 individuals will be randomized to the active control group, "Physical Health Education Treatment" (PHET).

Participants will be asked to complete a baseline assessment of mood, substance use, and psychophysiology. Participants will then completed ecological momentary assessments (EMA) via smartphone technology 4 times a day for ~ 28 days (the day following the baseline assessment until the 3rd intervention session). Participants will complete one 45 minute - 1 hour intervention each week for 3 weeks (either the IMPROVE or PHET intervention, pending randomization). Following the last intervention session, participants will return to the lab to complete a post-intervention assessment that mirrors the baseline assessment and then complete follow-up surveys 1- and 3-months post intervention.
- EligibilityCriteria: Inclusionary Criteria:  Participants will be eligible for enrollment if they:  recently enrolled in the Talbot Hall IOP >18 years old PROMIS Anxiety Short Form total score is 13 or greater  Exclusionary Criteria:  do not pass the Informed Decision-Making Capacity (IDMC) screener, suggesting severe cognitive impairment presence of a psychiatric or medical condition that would prevent them from providing informed consent or from participating in the treatments (e.g., psychosis, mania, acute intoxication) no or limited access to a smartphone that is compatible with the EMA application - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult