Related Experiment Video
Updated: May 24, 2025
03:14
Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
Published on: December 6, 2024
475
Fine-tuning Large Language Models in Behavioral Psychology for Scalable Physical Activity Coaching
Sriya Mantena1, Anders Johnson1, Marily Oppezzo2,3
1Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA.
Medrxiv : the Preprint Server for Health Sciences
|March 4, 2025
Summary
A new AI coach, MHC-Coach, provides personalized messages to encourage physical activity. Users preferred AI messages over human ones, showing potential for long-term behavior change and reduced cardiovascular disease risk.
Area of Science:
- Digital Health
- Behavioral Science
- Artificial Intelligence
Background:
- Smartphone-based coaching enhances physical activity but often uses static, non-personalized messages.
- Behavioral science frameworks, like the Transtheoretical Model of Change, offer theoretical underpinnings for behavior modification.
Purpose of the Study:
- To introduce and evaluate MHC-Coach, a large language model-based system for personalized health coaching.
- To assess the efficacy of AI-generated, psychologically tailored messages in promoting long-term physical activity.
Main Methods:
- Developed MHC-Coach by fine-tuning a large language model on the Transtheoretical Model of Change.
- Conducted a study with 632 participants comparing MHC-Coach messages to human-expert messages for physical activity promotion.
- Collected participant preference data and expert ratings on message effectiveness and theoretical alignment.
Main Results:
- 68.0% of participants preferred MHC-Coach-generated messages when matched to their stage of change (P < 0.001).
- Blinded experts rated MHC-Coach messages higher for perceived effectiveness (4.4 vs. 2.8) and Transtheoretical Model alignment (4.1 vs. 3.5).
Conclusions:
- Large language models can effectively operationalize behavioral science frameworks for personalized health coaching.
- MHC-Coach demonstrates potential for fostering sustained physical activity behavior change.
- This approach may contribute to reducing cardiovascular disease risk at scale through accessible digital interventions.
More Related Videos
Related Concept Videos
01:26Modeling in Therapy
41
Modeling, a key technique in therapy, uses observational learning to help clients acquire and practice new skills by watching therapists demonstrate desired behaviors. This approach, rooted in Albert Bandura's concept of vicarious learning, plays a significant role in therapeutic interventions for various psychological conditions, including social anxiety, ADHD, and depression.
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
41
01:23Behavioral Genetics and Its Designs
317
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
317
01:21Behavior Modification
123
Behavioral approaches have often been criticized for ignoring mental processes and focusing solely on observable behavior. However, these approaches provide an optimistic perspective for individuals seeking to change their behaviors. Rather than concentrating on intrinsic personality traits, behavioral approaches suggest that even longstanding habits can be modified by changing the reward contingencies that maintain them.
A real-world application of operant conditioning principles is applied...
A real-world application of operant conditioning principles is applied...
123
01:28Behaviorism
2.2K
The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
2.2K
02:07Improving Translational Accuracy
8.5K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
8.5K
01:52Regression Toward the Mean
6.3K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.3K