Digital phenotyping of affect and stress in emerging adults - Report - MDSpire

Digital phenotyping of affect and stress in emerging adults

  • By

  • Coralie S. Phanord

  • Luka L. Ruzic

  • Siddharth Kalyanasundaram

  • Sofia Barnes-Horowitz

  • Naomi P. Friedman

  • Theodora Chaspari

  • Roselinde H. Kaiser

  • June 4, 2026

  • 0 min

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Clinical Report: Real-Time Monitoring of Mood and Stress in Young Adults

Overview

This study investigates the use of digital phenotyping to monitor mood and stress in emerging adults over a one-year period. It compares various machine learning models to predict daily affect and stress based on smartphone sensor data, revealing that personalized models outperform general models in predictive accuracy.

Background

Depression is prevalent among emerging adults, with a significant burden on mental health resources. Traditional monitoring methods often rely on retrospective self-reports, which can be biased and infrequent. Digital phenotyping offers a promising alternative for real-time monitoring of depressive symptoms, potentially facilitating timely interventions.

Data Highlights

No numerical data available in the source material.

Key Findings

  • Digital phenotyping can effectively track behaviors and predict mood and stress in emerging adults.
  • Three machine learning models were compared: Group General, Group Personalized, and Within-Person Personalized.
  • Group Personalized model provided the best balance of accuracy and stability, but was influenced heavily by individual differences.
  • Within-Person Personalized model revealed individual-specific behavioral patterns but had limited reliability.
  • Findings highlight the need for further research to refine personalized and hybrid modeling strategies.

Clinical Implications

The study underscores the potential of digital phenotyping as a tool for real-time monitoring of mood and stress, which can enhance early intervention strategies. Clinicians should consider integrating personalized modeling approaches to better understand individual patient behaviors and needs.

Conclusion

The findings demonstrate the complementary strengths of different machine learning models in predicting affect and stress. Future research should focus on optimizing these models for practical applications in mental health monitoring.

Related Resources & Content

  1. Frontiers in Psychiatry, 2026 -- Prospective observational study on behavioral monitoring, disease progression assessment, and screening model development for patients with depression using wearable devices and mobile phones: protocol
  2. npj Digital Medicine, 2025 -- Personalised modelling of routine variability and affective states
  3. npj Digital Medicine, 2026 -- Assessing Youth Mental Health Needs Through an Adaptive Digital Tool: Findings from a Cross-Sectional Analysis
  4. BMC Psychiatry (Springer) — Utilizing Remote Technology for ADHD Management: A Prospective Cohort Study Protocol on Transitioning and Mitigating Adverse Outcomes in Adolescents
  5. NICE Guidance on Digital Front Door Technologies
  6. American Psychiatric Association - Mental Health Apps
  7. FDA Digital Health Advisory Committee Summary
  8. Depression in Adults (Update) (2025) – Canadian Task Force on Preventive Health Care
  9. AI-assisted multi-modal information for the screening of depression: a systematic review and meta-analysis | npj Digital Medicine
  10. Journal of Medical Internet Research - Use of Mobile Sensing Data for Longitudinal Monitoring and Prediction of Depression Severity: Systematic Review
  11. Journal of Psychiatric Research 194 (2026) 40–50
  12. Smartphone-Based Digital Phenotyping Across Health Conditions: Scoping Review - PubMed
  13. SmartSense-D: A safety, feasibility, and acceptability pilot study of digital phenotyping in young people with major depressive disorder - PubMed
  14. Real-Time Stress Monitoring, Detection, and Management in College Students: A Wearable Technology and Machine-Learning Approach
  15. Mobile phone dependency and subclinical depressive-anxiety symptom co-occurrence in college students: a cross-lagged panel network analysis | BMC Public Health | Springer Nature Link

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