Nature-based Contemplation and Spiritual Well-being Among Adults With Moderate Prolonged Grief Symptoms

The goal of this randomized controlled trial is to evaluate whether a nature-based contemplation intervention can enhance spiritual well-being and reduce grief symptoms among adults with moderate prolonged grief symptoms. The main questions it aims to answer are: Does a nature-based contemplation intervention improve spiritual well-being compared to an active control condition (noticing nature) and a waitlist control condition? Does a nature-based contemplation intervention reduce grief severity and improve mental well-being, nature connectedness, selflessness, ability to adapt, personal recovery, and elevation compared to control conditions? How do spiritual well-being, ability to adapt, nature connectedness, selflessness, grief reactions, and positive/negative affect change during the intervention period? Researchers will compare a nature-based contemplation intervention to both a noticing-nature active control group and a waitlist control group to isolate mindfulness-specific effects from possible general nature exposure benefits. Participants will: Complete baseline, post-intervention, and follow-up assessments (at one and three months) Engage in either 10 sessions of nature-based contemplation practice or noticing nature activities over a two-week period (intervention and active control groups) Provide daily diary responses about their experiences throughout the 14-day intervention period

NCT Number	NCT06904976
Lead Sponsor	University of Twente
Conditions	Grief, Spiritual Wellbeing
Enrollment	262 participants
Start Date	2025-03-24
Primary Completion	2025-10-01 (estimated)
Study Completion	2025-10-01 (estimated)
Updated on ClinicalTrials.gov	2026-05-05