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High verbal working memory load impairs gesture-speech integration: Evidence from a dual task paradigm

Kandana-Arachchige, Kendra Gimhani; Holle, Henning; Rossignol, Mandy; Loureiro, Isabelle Simoes; Lefebvre, Laurent

Authors

Kendra Gimhani Kandana-Arachchige

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Dr Henning Holle H.Holle@hull.ac.uk
Reader in Psychology / Leader of Cognitive and Clinical Neuroscience group (https://www.hull.ac.uk/neuroscience)

Mandy Rossignol

Isabelle Simoes Loureiro

Laurent Lefebvre



Abstract

While previous studies have shown the importance of visuo-spatial working memory in the processing of co-speech iconic gestures, clear evidence for a potential involvement of the verbal working memory (vWM) is currently lacking. To address this issue, participants in the present study were presented with a dual task paradigm. The main outcome variable was the performance on a Stroop-like gesture task which provides a behavioural index of gesture-speech integration. Participants performed this task under conditions of either high or low concurrent vWM load. Unlike in previous studies, the number of words to remember in the high load condition was determined by their individual verbal span rather than being fixed. Results showed longer reaction times for semantically incongruent gesture-speech combinations as compared to congruent combinations. However, this semantic congruency effect disappeared when the vWM load increased. This result suggests a causal involvement of verbal working memory capacity in gesture-speech integration. Abstract While previous studies have shown the importance of visuo-spatial working memory in the

Citation

Kandana-Arachchige, K. G., Holle, H., Rossignol, M., Loureiro, I. S., & Lefebvre, L. (in press). High verbal working memory load impairs gesture-speech integration: Evidence from a dual task paradigm. Gesture,

Journal Article Type Article
Acceptance Date May 31, 2021
Deposit Date Jun 1, 2021
Publicly Available Date Aug 23, 2021
Journal Gesture
Print ISSN 1568-1475
Publisher John Benjamins Publishing
Peer Reviewed Peer Reviewed
Keywords Gesture-speech integration; Verbal resources hypothesis; Iconic gestures; Gesture-speech comprehension; Verbal working memory; Manuscript Classifications: comprehension; memory
Public URL https://hull-repository.worktribe.com/output/3777942
Publisher URL https://www.benjamins.com/catalog/gest

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