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The Relationship Between Insomnia and Prolonged Grief: A Systematic Review of Longitudinal and Intervention Research

Jong, Ananda, de (2026) The Relationship Between Insomnia and Prolonged Grief: A Systematic Review of Longitudinal and Intervention Research. Master thesis, Psychology.

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Abstract

The current review serves as an update to Lancel et al. (2020), addressing previously identified gaps concerning the lack of longitudinal and intervention research on sleep difficulties and prolonged grief. Specifically, it aimed to examine (1) the temporal relationship between sleep disturbances and prolonged grief symptoms and (2) whether therapeutic interventions targeting sleep problems reduce symptoms of prolonged grief, and vice versa. A literature search conducted in PsycINFO, PubMed, and Web of Science identified thirteen eligible studies, including six longitudinal observational studies and seven intervention trials. Findings on temporal associations were mixed. Higher-quality studies suggested that sleep disturbances may predict subsequent increases in PG symptoms, whereas evidence for the reverse direction was weaker. However, depressive symptoms frequently explained these associations. Most grief- focused intervention studies did not significantly improve sleep compared to control conditions over time, and residual sleep problems commonly persisted. Only one randomized controlled trial evaluated a sleep-focused intervention with prolonged grief as an outcome, and found no improvement over time between groups. More rigorous longitudinal and experimental research is needed to clarify temporal relationships and evaluate sleep-focused treatments for prolonged grief.

Item Type: Thesis (Master)
Supervisor name: Eisma, M.C.
Degree programme: Psychology
Differentiation route: Clinical Forensic Psychology and Victimology (FP) [Master Psychology]
Date Deposited: 20 Apr 2026 08:06
Last Modified: 20 Apr 2026 08:06
URI: http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/6375

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