Working memory capacity modulates expectancy-based strategic processing: Behavioral and electrophysiological evidence

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Fernandez, Sergio; Ortells, Juan Jose; Kiefer, Markus; Noguera, Carmen and De Fockert, J. W.. 2021. Working memory capacity modulates expectancy-based strategic processing: Behavioral and electrophysiological evidence. Biological Psychology, 159, 108023. ISSN 0301-0511 [Article]

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Official URL: https://www.sciencedirect.com/science/article/pii/...

Abstract or Description

The present research measured participants’ event-related brain activity while they performed a Stroop-priming task that induced the implementation of expectancy-based strategic processes. Participants identified a colored (red vs. green) target patch preceded by a prime word (GREEN or RED), with incongruent prime-target pairings being more frequent (75 %) than congruent pairs (25 %). The prime-target stimulus onset asynchrony (SOA) was manipulated at two levels: 300 vs. 700 ms. Participants also performed a change localization task to assess their working memory capacity (WMC). At the 300 ms SOA, all participants presented a Stroop-priming congruency effect (slower responses on incongruent than on congruent trials) and an increased N2 amplitude in incongruent trials, irrespective of their WMC. At the 700-ms SOA, the lower-WMC group showed again a larger negative-going waveform to incongruent targets, whereas the higher-WMC group exhibited a reversed Stroop-priming congruency effect (faster responses to incongruent targets) and the N2 component was absent.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1016/j.biopsycho.2021.108023

Additional Information:

Funding: This research was supported by Grant PSI2017-83135-P from the Spanish Ministry of Economy and Competitiveness.

Keywords:

Stroop priming effects, Expectancy-based strategic processes, SOA intervals, Individual differences in working memory, capacity, N2 ERP component

Departments, Centres and Research Units:

Psychology
Psychology > Cognitive Neuroscience Unit

Dates: