Intervention Fidelity and Feasibility of the Positive Psychology-Based Happiness Activity Guidebook Among Military Personnel

Authors

  • Wee Mekwilai DATAPSY Learning Center
  • Nichapha Rattanjan Bureau of Mental Health Academic Affairs, DMH, Thailand
  • Suthee Intharachat Office of Defense Logistics of the Permanent Secretary for Defense, Thailand
  • Nachaphun Denijs Panyapiwat Institute of Management, Thailand

Keywords:

Organizational Well-being, Positive Psychology, Program Evaluation, Stress Intervention, Military Mental Health

Abstract

Military personnel face significant mental health challenges, with high rates of work-related stress. This study evaluated the fidelity and feasibility of a Positive Psychology-Based Happiness Activity Guidebook for military personnel experiencing stress. A mixed-methods process evaluation was conducted with 211 military personnel from the Office of the Permanent Secretary for Defense in Thailand. The intervention, based on the PERMA model, comprised ten structured activities across multiple sessions. Data collection included attendance tracking, facilitator evaluations, participant interviews, and direct observations. The intervention demonstrated exceptional program fidelity, with attendance rates of 97.2-100% and complete activity adherence. Participants reported significant benefits in stress management and professional growth. The 30-minute session format proved effective, with participants valuing the program's structured approach and practical applications. Mental health professionals noted the intervention's capacity to address unique military workplace challenges while promoting positive psychological strategies. The study provides evidence for successfully implementing a positive psychology intervention in a military setting. Key findings emphasize the importance of context-specific program adaptation, robust facilitator training, and alignment with organizational goals. Despite limitations of single-site implementation and short study duration, the research offers valuable insights into mental health support strategies for military personnel.

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Published

2025-12-27

How to Cite

Mekwilai, W., Rattanjan, N., Intharachat, S., & Denijs, N. (2025). Intervention Fidelity and Feasibility of the Positive Psychology-Based Happiness Activity Guidebook Among Military Personnel. Journal of Education, Language, and Cultural Studies, 1(1), 30–41. retrieved from https://so17.tci-thaijo.org/index.php/JELCS/article/view/944

Issue

Vol. 1 No. 1 (2025): July-December 2025

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Articles

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