This study involves a two-group repeated measure design. This study is a randomized controlled trial. The investigators plan to examine the outcomes associated with ICT versus standard care among patients receiving outpatient addiction treatment services. The investigators will employ assessments at baseline, four-month follow-up, and seven-month follow-up. Eligible participants will be randomly assigned to ICT therapy (plus standard care) or standard care, and all will be followed for the research assessments regardless of whether they drop out of treatment early (whenever possible).