The Western Australia Olfactory Memory Test: Reliability and validity in a sample of older adults

R. Seneviratne; M. Weinborn; D.R. Badcock; B.E. Gavett; M. Laws; K. Taddei; R.N. Martins; H.R. Sohrabi

doi:10.1093/arclin/acac048

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The Western Australia Olfactory Memory Test: Reliability and validity in a sample of older adults

Journal article

Peer reviewed

The Western Australia Olfactory Memory Test: Reliability and validity in a sample of older adults

R. Seneviratne, M. Weinborn, D.R. Badcock, B.E. Gavett, M. Laws, K. Taddei, R.N. Martins and H.R. Sohrabi

Archives of Clinical Neuropsychology

2022

DOI: https://doi.org/10.1093/arclin/acac048

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Abstract

Objective The Western Australia Olfactory Memory Test (WAOMT) is a newly developed test designed to meet a need for a comprehensive measure of olfactory episodic memory (OEM) for clinical and research applications. Method This study aimed to establish the psychometric properties of the WAOMT in a sample of 209 community-dwelling older adults. An independent sample of 27 test-naïve participants were recruited to assess test retest reliability (between 7 and 28 days). Scale psychometric properties were examined using item response theory methods, combined samples (final N = 241). Convergent validity was assessed by comparing performance on the WAOMT with a comprehensive neuropsychological battery of domains (verbal and visual episodic memory, and odor identification), as well as other neuropsychological skills. Based on previous literature, it was predicted that the WAOMT would be positively correlated with conceptually similar cognitive domains. Results The WAOMT is a psychometrically sound test with adequate reliability properties and demonstrated convergent validity with tests of verbal and episodic memory and smell identification. Patterns of performance highlight learning and memory characteristics unique to OEM (e.g., learning curves, cued and free recall). Conclusion Clinical and research implications include streamlining future versions of the WAOMT to ease patient and administrative burden, and the potential to reliably detect early neuropathological changes in healthy older adults with nonimpaired OEM abilities.

Details

Title: The Western Australia Olfactory Memory Test: Reliability and validity in a sample of older adults
Authors/Creators: R. Seneviratne (Author/Creator) - The University of Western Australia
M. Weinborn (Author/Creator) - The University of Western Australia
D.R. Badcock (Author/Creator) - The University of Western Australia
B.E. Gavett (Author/Creator) - The University of Western Australia
M. Laws (Author/Creator) - Australian Alzheimer’s Research Foundation
K. Taddei (Author/Creator) - Edith Cowan University
R.N. Martins (Author/Creator) - Edith Cowan University
H.R. Sohrabi (Author/Creator) - Australian Alzheimer’s Research Foundation
Publication Details: Archives of Clinical Neuropsychology
Publisher: Oxford University Press
Identifiers: 991005544243507891
Copyright: © 2022 The Authors.
Murdoch Affiliation: Centre for Healthy Ageing
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 1 Clinical & Life Sciences; 1.52 Neurodegenerative Diseases; 1.52.60 Dementia
Web Of Science research areas: Psychology; Psychology, Clinical
ESI research areas: Psychiatry/Psychology