Prospective memory function in late adulthood: affect at encoding and resource allocation costs

Henry, Julie D., Joeffry, Sebastian, Terrett, Gill, Ballhausen, Nicola, Kliegel, Matthias and Rendell, Peter G. (2015) Prospective memory function in late adulthood: affect at encoding and resource allocation costs. PL o S One, 10 4: 1-11. doi:10.1371/journal.pone.0125124

Author Henry, Julie D.
Joeffry, Sebastian
Terrett, Gill
Ballhausen, Nicola
Kliegel, Matthias
Rendell, Peter G.
Title Prospective memory function in late adulthood: affect at encoding and resource allocation costs
Journal name PL o S One   Check publisher's open access policy
ISSN 1932-6203
Publication date 2015-04-20
Year available 2015
Sub-type Article (original research)
DOI 10.1371/journal.pone.0125124
Open Access Status DOI
Volume 10
Issue 4
Start page 1
End page 11
Total pages 11
Place of publication San Francisco, CA, United States
Publisher Public Library of Science
Collection year 2016
Language eng
Abstract Some studies have found that prospective memory (PM) cues which are emotionally valenced influence age effects in prospective remembering, but it remains unclear whether this effect reflects the operation of processes implemented at encoding or retrieval. In addition, none of the prior ageing studies of valence on PM function have examined potential costs of engaging in different valence conditions, or resource allocation trade-offs between the PM and the ongoing task. In the present study, younger, young-old and old-old adults completed a PM task in which the valence of the cues varied systematically (positive, negative or neutral) at encoding, but was kept constant (neutral) at retrieval. The results indicated that PM accuracy did not vary as a function of affect at encoding, and that this effect did not interact with age group. There was also no main or interaction effect of valence on PM reaction time in PM cue trials, indicating that valence costs across the three encoding conditions were equivalent. Old-old adults' PM accuracy was reduced relative to both young-old and younger adults. Prospective remembering incurred dual-task costs for all three groups. Analyses of reaction time data suggested that for both young-old and old-old, these costs were greater, implying differential resource allocation cost trade-offs. However, when reaction time data were expressed as a proportional change that adjusted for the general slowing of the older adults, costs did not differ as a function of group.
Keyword Reaction time
Memory -- Age factors
Prospective memory
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Psychology Publications
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