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Symposia

Research Methods and Statistics

Advancing Idiographic Methods Toward Practice: Moving Beyond Concepts to Implementation, Feasibility, and Trial Insights

1 - (SYM 6) Applying Network-informed Process-based Therapy for Trichotillomania: Insights from Real-world Clinical Applications

Friday, November 21, 2025
5:05 PM - 5:27 PM CST
Location: Celestin H, Level 3
Keywords: Implementation, Treatment, Research Methods
Recommended Readings: Ong, C. W., Hayes, S. C., & Hofmann, S. G. (2022). A process-based approach to cognitive behavioral therapy: A theory-based case illustration. Frontiers in Psychology, 13. https://doi.org/10.3389/fpsyg.2022.1002849,   Deisenhofer, A. K., Barkham, M., Beierl, E. T., Schwartz, B., Aafjes-van Doorn, K., Beevers, C. G., Berwian, I. M., Blackwell, S. E., Bockting, C. L., Brakemeier, E. L., Brown, G., Buckman, J. E. J., Castonguay, L. G., Cusack, C. E., Dalgleish, T., de Jong, K., Delgadillo, J., DeRubeis, R. J., Driessen, E., Ehrenreich-May, J., … Cohen, Z. D. (2024). Implementing precision methods in personalizing psychological therapies: Barriers and possible ways forward. Behaviour research and therapy, 172, 104443. https://doi.org/10.1016/j.brat.2023.104443
Hofmann, S. G., & Hayes, S. C. (2019). The future of intervention science: Process-based therapy. Clinical Psychological Science, 7, 37–50. https://doi.org/10.1177/ 2167702618772296,   Hofmann, S. G., & Hayes, S. C. (2019). The future of intervention science: Process-based therapy. Clinical Psychological Science, 7, 37–50. https://doi.org/10.1177/ 2167702618772296,   Levinson, C. A., Williams, B. M., Christian, C., Hunt, R. A., Keshishian, A. C., Brosof, L. C., Vanzhula, I. A., Davis, G. G., Brown, M. L., Bridges-Curry, Z., Sandoval-Araujo, L. E., & Ralph-Nearman, C. (2023). Personalizing eating disorder treatment using idiographic models: An open series trial. Journal of Consulting and Clinical Psychology, 91(1), 14–28. https://doi.org/10.1037/ccp0000785,   Woolley, M. G., Sahdra, B. K., Bowers, E. M., Capel, L. K., Twohig, M. P., & Levin, M. E. (2025). An idionomic network analysis of Trichotillomania Treatment Processes: Gathering group-level and individual-level insights to inform a personalized therapeutic framework. Behavior Therapy. https://doi.org/10.1016/j.beth.2025.01.006
Abstract Body
The heterogeneity of trichotillomania across individuals presents a challenge for treatment (Woolley et al., 2025), making it well-suited for a process-based therapy (PBT; Hofmann & Hayes, 2019) approach. The feasibility and clinical utility of PBT is underexplored, raising questions about the practical demands of intensive data collection and the adaptability of network-informed interventions in clinical practice. This case series examines the feasibility and utility of a PBT approach for trichotillomania, guided by data-derived network case formulations for three clients. Ecological momentary assessment (EMA) data were analyzed using individual-level structural equation models within a vector autoregressive framework (Lane et al., 2019), identifying personalized psychological networks that capture dynamic relationships between hair-pulling urges, cognitions, affective states, and behavioral responses. Networks informed case conceptualization and treatment planning, enabling targeted interventions tailored to each client’s dominant psychological processes.Treatment integrating evidence-based components from established interventions for trichotillomania, including habit reversal training, acceptance and commitment therapy, and comprehensive behavioral treatment. Therapy trajectories were continuously adjusted based on real-time EMA data and client feedback, ensuring alignment with evolving symptom patterns and treatment preferences. Clients demonstrated reductions in hair-pulling. Comparative pre- and post-treatment network models illustrated shifts in network connectivity following PBT. This talk will showcase the application of PBT, highlighting successes and lessons learned from implementing this approach in practice. 

Hofmann, S. G., & Hayes, S. C. (2019). The future of intervention science: Process-based therapy. Clinical Psychological Science, 7(1), 37-50. https://doi.org/10.1177/2167702618772296

Lane, S. T., Gates, K. M., Pike, H. K., Beltz, A. M., & Wright, A. G. C. (2019). Uncovering general, shared, and unique temporal patterns in ambulatory assessment data. Psychological methods, 24(1), 54–69. https://doi.org/10.1037/met0000192

Woolley, M. G., Sahdra, B. K., Bowers, E. M., Capel, L. K., Twohig, M. P., & Levin, M. E. (2025). An idionomic network analysis of Trichotillomania Treatment Processes: Gathering group-level and individual-level insights to inform a personalized therapeutic framework. Behavior Therapy. https://doi.org/10.1016/j.beth.2025.01.006