Slow down and remember to remember! A delay theory of prospective memory costs

Heathcote, Andrew, Loft, Shayne and Remington, Roger W (2015) Slow down and remember to remember! A delay theory of prospective memory costs. Psychological Review, 122 2: 376-410. doi:10.1037/a0038952


Author Heathcote, Andrew
Loft, Shayne
Remington, Roger W
Title Slow down and remember to remember! A delay theory of prospective memory costs
Journal name Psychological Review   Check publisher's open access policy
ISSN 0033-295X
1939-1471
Publication date 2015-04-01
Year available 2015
Sub-type Article (original research)
DOI 10.1037/a0038952
Volume 122
Issue 2
Start page 376
End page 410
Total pages 35
Place of publication Washington, United States
Publisher American Psychological Association
Collection year 2016
Language eng
Abstract Event-based prospective memory (PM) requires a deferred action to be performed when a target event is encountered in the future. Individuals are often slower to perform a concurrent ongoing task when they have PM task requirements relative to performing the ongoing task in isolation. Theories differ in their detailed interpretations of this PM cost, but all assume that the PM task shares limited-capacity resources with the ongoing task. In what was interpreted as support of this core assumption, diffusion model fits reported by Boywitt and Rummel (2012) and Horn, Bayen, and Smith (2011) indicated that PM demands reduced the rate of accumulation of evidence about ongoing task choices. We revaluate this support by fitting both the diffusion and linear ballistic accumulator (Brown & Heathcote, 2008) models to these same data sets and 2 new data sets better suited to model fitting. There was little effect of PM demands on evidence accumulation rates, but PM demands consistently increased the evidence required for ongoing task response selection (response thresholds). A further analysis of data reported by Lourenço, White, and Maylor (2013) found that participants differentially adjusted their response thresholds to slow responses associated with stimuli potentially containing PM targets. These findings are consistent with a delay theory account of costs, which contends that individuals slow ongoing task responses to allow more time for PM response selection to occur. Our results call for a fundamental reevaluation of current capacity-sharing theories of PM cost that until now have dominated the PM literature.
Keyword Prospective memory
Costs
Delay theory
Linear ballistic accumulator model
Diffusion model
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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