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Speech Planning at Turn Transitions in Dialog Is Associated With Increased Processing Load


Barthel, Mathias; Sauppe, Sebastian (2019). Speech Planning at Turn Transitions in Dialog Is Associated With Increased Processing Load. Cognitive Science, 43(7):e12768.

Abstract

Speech planning is a sophisticated process. In dialog, it regularly starts in overlap with an incoming turn by a conversation partner. We show that planning spoken responses in overlap with incoming turns is associated with higher processing load than planning in silence. In a dialogic experiment, participants took turns with a confederate describing lists of objects. The confederate’s utterances (to which participants responded) were pre‐recorded and varied in whether they ended in a verb or an object noun and whether this ending was predictable or not. We found that response planning in overlap with sentence‐final verbs evokes larger task‐evoked pupillary responses, while end predictability had no effect. This finding indicates that planning in overlap leads to higher processing load for next speakers in dialog and that next speakers do not proactively modulate the time course of their response planning based on their predictions of turn endings. The turn‐taking system exerts pressure on the language processing system by pushing speakers to plan in overlap despite the ensuing increase in processing load.

Abstract

Speech planning is a sophisticated process. In dialog, it regularly starts in overlap with an incoming turn by a conversation partner. We show that planning spoken responses in overlap with incoming turns is associated with higher processing load than planning in silence. In a dialogic experiment, participants took turns with a confederate describing lists of objects. The confederate’s utterances (to which participants responded) were pre‐recorded and varied in whether they ended in a verb or an object noun and whether this ending was predictable or not. We found that response planning in overlap with sentence‐final verbs evokes larger task‐evoked pupillary responses, while end predictability had no effect. This finding indicates that planning in overlap leads to higher processing load for next speakers in dialog and that next speakers do not proactively modulate the time course of their response planning based on their predictions of turn endings. The turn‐taking system exerts pressure on the language processing system by pushing speakers to plan in overlap despite the ensuing increase in processing load.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:06 Faculty of Arts > Department of Comparative Linguistics
Dewey Decimal Classification:150 Psychology
410 Linguistics
430 German & related languages
Uncontrolled Keywords:Turn taking; Dialog; Processing load; Task-evoked pupillary responses; Speechplanning; Dual task
Language:English
Date:1 July 2019
Deposited On:02 Jul 2019 13:08
Last Modified:25 Sep 2019 00:37
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0364-0213
OA Status:Closed
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1111/cogs.12768
Official URL:https://onlinelibrary.wiley.com/doi/full/10.1111/cogs.12768
Related URLs:https://osf.io/pf2br/

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