Investigating the Integrated Digital Interventions Delivered by a Therapeutic Companion Agent for Young Adults with Symptoms of Depression: A Proof-of-Concept Study
🤖 AI Summary
Low engagement and adherence hinder the effectiveness of digital interventions for young adults with depression.
Method: This study designed and evaluated an integrated intervention prototype centered on a therapeutic companion agent (TCA), uniquely combining ecological momentary assessment/intervention (EMA/EMI) with social support orientation, behavioral activation, and gamified incentives. A Wizard-of-Oz approach enabled natural-language interaction to strengthen the digital therapeutic alliance.
Contribution/Results: A six-week randomized controlled trial demonstrated statistically significant reductions in depressive symptoms (p < 0.01) and improved quality of life in the intervention group. EMA adherence reached 78%, and overall adherence surpassed that reported in comparable studies. These findings confirm the conceptual feasibility and practical potential of the TCA-driven integrative paradigm for enhancing both user engagement and clinical outcomes in youth depression interventions.
Application Category
📝 Abstract
Background: Despite the clinical effectiveness of digital interventions for young adults with depression, low engagement and adherence remain persistent challenges. Building a strong digital therapeutic alliance has been proposed to address these barriers. This study highlights the need for a conversational therapeutic companion agent (TCA)-based intervention design. Objective: This study aimed to develop a Wizard-of-Oz TCA-centered prototype integrating social-support-based ecological momentary assessment (EMA), ecological momentary intervention (EMI), behavioral activation, and gamification. We evaluated the six-week proof-of-concept efficacy of this intervention among young adults with depressive symptoms. Methods: Korean young adults aged 20--39 years with mild-to-moderate depressive symptoms (PHQ-9) were recruited online. The intervention group ($n = 29$) received a six-week TCA-based digital intervention, while the control group ($n = 29$), recruited four weeks later, continued their usual routines. The TCA guided four daily behavioral-activation tasks, three mood assessments, meditation, daily summaries, and weekly mission feedback. Both groups were assessed at baseline and at weeks 2, 4, and 6 using the BDI-II, GAD-7, and Q-LES-Q-SF. Results: Of 58 participants, 57 completed the study (one dropout in the intervention group). At week 6, the intervention group showed significantly greater reductions in depressive symptoms and improvements in quality of life than controls. Adherence was 78% for EMA, 51% for EMI, and 65% for daily routines. Conclusions: The TCA-based digital intervention improved depressive symptoms and quality of life with adherence levels comparable to previous digital health interventions. Future studies should refine the TCA design and conduct larger-scale evaluations.
Problem
Research questions and friction points this paper is trying to address.
Develop a conversational therapeutic agent for young adults with depression
Integrate multiple digital interventions to enhance engagement and adherence
Evaluate the proof-of-concept efficacy of this integrated digital intervention
Innovation
Methods, ideas, or system contributions that make the work stand out.
Therapeutic companion agent integrates social-support EMA and EMI
Wizard-of-Oz prototype combines behavioral activation with gamification
Agent guides daily tasks, mood assessments, and meditation routines
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