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Leveraging Multimodal Self-Consistency Reasoning in Coding Motivational Interviewing for Alcohol Use Reduction
Guangzeng Han1, James G Murphy2, Benjamin O Ladd3
1Department of Computer Science, University of Memphis, Memphis, TN 38152, United States.
Automating Motivational Interviewing (MI) coding using audio language models (ALMs) shows promise. Multimodal self-consistency (MM-SC) improves accuracy by analyzing both verbal and acoustic cues, outperforming baseline methods.
Area of Science:
- Computational linguistics
- Behavioral science
- Artificial intelligence
Background:
- Motivational Interviewing (MI) coding is labor-intensive.
- Audio Language Models (ALMs) offer automation potential.
- ALMs can capture multimodal behavioral signals.
Purpose of the Study:
- To automate the coding of Motivational Interviewing (MI) sessions.
- To leverage ALMs for analyzing client behaviors.
- To improve the efficiency and reliability of MI coding.
Main Methods:
- Experimented with 5 de-identified MI audio sessions.
- Deployed ALMs with four analytic prompts (verbal, acoustic, scoring, comparative).
- Used majority voting across 12 reasoning trajectories per utterance for predictions.
Main Results:
- The MM-SC approach achieved 52.56% accuracy, 54.03% precision, 47.45% recall, and 46.40% macro-F1.
- MM-SC outperformed baseline methods.
- Ablation studies confirmed the importance of individual modules.
Conclusions:
- Multimodal self-consistency (MM-SC) surpasses single-pass prompting.
- Integrating verbal and acoustic cues enhances MI coding reliability.
- This approach supports more accurate analysis of client communication.
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