The Western Australia olfactory memory test: Reliability and validity in a sample of older adults

Document Type

Journal Article

Publication Title

Archives of clinical neuropsychology: the official journal of the National Academy of Neuropsychologists

Volume

37

Issue

8

First Page

1720

Last Page

1734

PubMed ID

35870197

Publisher

Oxford Academic

School

School of Medical and Health Sciences

RAS ID

54068

Funders

McCusker Charitable Foundation / Australian Alzheimer’s Research Foundation / Edith Cowan University / Hollywood Private Hospital / Sir Charles Gairdner Hospital

Comments

Seneviratne, R., Weinborn, M., Badcock, D. R., Gavett, B. E., Laws, M., Taddei, K., ... & Sohrabi, H. R. (2022). The Western Australia olfactory memory test: Reliability and validity in a sample of older adults. Archives of Clinical Neuropsychology, 37(8), 1720-1734. https://doi.org/10.1093/arclin/acac048

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.

DOI

10.1093/arclin/acac048

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