Next Article in Journal / Special Issue
A Solution to the Measurement Problem in the Idiographic Approach Using Computer Adaptive Practicing
Previous Article in Journal / Special Issue
Intraindividual Variability across Neuropsychological Tests: Dispersion and Disengaged Lifestyle Increase Risk for Alzheimer’s Disease
Article Menu

Export Article

Open AccessArticle

Intraindividual Variability in Inhibition and Prospective Memory in Healthy Older Adults: Insights from Response Regularity and Rapidity

1
Faculty of Psychology and Educational Sciences, University of Geneva, CH-1211 Geneva, Switzerland
2
Swiss Centre for Affective Sciences, University of Geneva, CH-1211 Geneva, Switzerland
3
Department of Psychology, University of Liège, B-4000 Liège, Belgium
4
Faculty of Psychology (French), Swiss Distance Learning University, CH-3900 Brig Switzerland
5
Swiss National Centre of Competence in Research LIVES—Overcoming Vulnerability: Life Course Perspectives, Universities of Lausanne and of Geneva, CH-1211 Geneva, Switzerland
*
Author to whom correspondence should be addressed.
Received: 30 November 2017 / Revised: 19 February 2018 / Accepted: 27 February 2018 / Published: 1 March 2018
(This article belongs to the Special Issue Cognitive Development and Individual Variability)
View Full-Text   |   Download PDF [957 KB, uploaded 5 March 2018]   |  

Abstract

Successful prospective memory (PM) performance relies on executive functions, including inhibition. However, PM and inhibition are usually assessed in separate tasks, and analytically the focus is either on group differences or at most on interindividual differences. Conjoint measures of PM and inhibition performance that take into account intraindividual variability (IIV) are thus missing. In the present study, we assessed healthy older adults’ level of performance and IIV in both inhibition and PM using a classical Go/NoGo task. We also created a prospective Go/NoGo version that embeds a PM component into the task. Using dynamic structural equation modeling, we assessed the joint effects of mean level (μ), an indicator of amplitude of fluctuations in IIV (or net IIV; intraindividual standard deviation, iSD), and an indicator of time dependency in IIV (the autoregressive parameter ϕ) in reaction times (RTs) on inhibition and PM performance. Results indicate that higher inhibition failure, but not IIV, predicted PM errors, corroborating the current literature on the involvement of prepotent response inhibition in PM processes. In turn, fastest RT latency (μ) and increased net IIV (iSD) were consistently associated with prepotent response inhibition failure, while coherence in RT pattern (ϕ) was beneficial to inhibition performance when the task was novel. Time-dependent IIV (ϕ) appears to reflect an adaptive exploration of strategies to attain optimal performance, whereas increased net IIV (iSD) may indicate inefficient sustained cognitive processes when performance is high. We discuss trade-off processes between competing tasks. View Full-Text
Keywords: intraindividual variability; prospective memory; prepotent response inhibition; Go/NoGo SART task; amplitude of fluctuations; autoregressive parameter; random process fluctuation; functional adaptability; functional diversity intraindividual variability; prospective memory; prepotent response inhibition; Go/NoGo SART task; amplitude of fluctuations; autoregressive parameter; random process fluctuation; functional adaptability; functional diversity
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Joly-Burra, E.; Van der Linden, M.; Ghisletta, P. Intraindividual Variability in Inhibition and Prospective Memory in Healthy Older Adults: Insights from Response Regularity and Rapidity. J. Intell. 2018, 6, 13.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
J. Intell. EISSN 2079-3200 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top