Development and Psychometric Validation of the Testamentary Capacity Assessment Screening Tool: A Study of Older Adults With and Without Dementia
The TCAST is a reliable and valid screening tool for assessing TC in older Japanese adults. It is not designed to categorically determine incapacity, but to highlight domains relevant to testamentary reasoning and support person-centered evaluations. The tool may aid clinicians and legal professionals in identifying both retained abilities and areas needing support, underscoring its potential utility in interdisciplinary approaches to capacity assessment in aging societies.
Authors
- Yoko Eguchi (ORCID: https://orcid.org/0000-0003-2215-314X)
- Kiyoko Iiboshi (ORCID: https://orcid.org/0009-0008-8441-1830)
- Teruyuki Matsuoka (ORCID: https://orcid.org/0000-0001-7683-7825)
- Yuichiro Nagura
- Masami Hiyama
- Yuka Kato
- Motoharu Shina
- Jin Narumoto
- Masaru Mimura
Institutions
- Prudential Financial (United States) (US)
- Keio University (JP)
- Shigakukan University (JP)
- Kyoto Medical Center (JP)
- Kyoto Prefectural University of Medicine (JP)
- National Institute of Technology, Maizuru College (JP)
- Maizuru Municipal Hospital (JP)
- Shimadzu (Japan) (JP)
Publication Details
- Journal
- Psychogeriatrics
- Published
- 2026-01-01
- DOI
- https://doi.org/10.1111/psyg.70133
- Primary Topic
- Healthcare Decision-Making and Restraints
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Keio University
- Japan Science and Technology Agency