Evidence for Different Trajectories of Delay Discounting in Older Adults With Mild Cognitive Impairment and Mild Alzheimer's Disease

Thoma, Myriam V; Maercker, Andreas; Forstmeier, Simon

doi:10.1093/geronb/gbw010

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Thoma, M. V., Maercker, A., & Forstmeier, S. (2017). Evidence for Different Trajectories of Delay Discounting in Older Adults With Mild Cognitive Impairment and Mild Alzheimer’s Disease. Journals of Gerontology, Series B: Psychological Sciences and Social Sciences, 72(6), 956–965. https://doi.org/10.1093/geronb/gbw010

Abstract

OBJECTIVES: To examine whether delay discounting (DD) develops differently within individuals diagnosed with mild cognitive impairment (MCI) or mild Alzheimer's disease (AD). METHOD: We set out to study trajectories of DD in N = 111 older adults (Mage = 75.2 years, range: 55-94, 53% female) with MCI (n = 64) or mild AD (n = 47). Data were repeatedly assessed on three measurement times over a period of 2 years. RESULTS: Results indicated a meaningful difference in the trajectories of DD between MCI and mild AD (t = 2.99, p = .004), wit