Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/1997

Appears in Collections:Psychology Journal Articles
Peer Review Status: Unrefereed
Title: Not all disfluencies are are equal: The effects of disfluent repetitions on language comprehension
Authors: MacGregor, Lucy
Corley, Martin
Donaldson, David
Contact Email: d.i.donaldson@stir.ac.uk
Keywords: Language comprehension
Disfluency
Speech
ERPs
Repetitions
Issue Date: Oct-2009
Publisher: Elsevier
Citation: MacGregor L, Corley M & Donaldson D (2009) Not all disfluencies are are equal: The effects of disfluent repetitions on language comprehension, Brain and Language, 111 (1), pp. 36-45.
Abstract: Disfluencies can affect language comprehension, but to date, most studies have focused on disfluent pauses such as er. We investigated whether disfluent repetitions in speech have discernible effects on listeners during language comprehension, and whether repetitions affect the linguistic processing of subsequent words in speech in ways which have been previously observed with ers. We used event-related potentials (ERPs) to measure participants’ neural responses to disfluent repetitions of words relative to acoustically identical words in fluent contexts, as well as to unpredictable and predictable words that occurred immediately post-disfluency and in fluent utterances. We additionally measured participants’ recognition memories for the predictable and unpredictable words. Repetitions elicited an early onsetting relative positivity (100–400 ms post-stimulus), clearly demonstrating listeners’ sensitivity to the presence of disfluent repetitions. Unpredictable words elicited an N400 effect. Importantly, there was no evidence that this effect, thought to reflect the difficulty of semantically integrating unpredictable compared to predictable words, differed quantitatively between fluent and disfluent utterances. Furthermore there was no evidence that the memorability of words was affected by the presence of a preceding repetition. These findings contrast with previous research which demonstrated an N400 attenuation of, and an increase in memorability for, words that were preceded by an er. However, in a later (600–900 ms) time window, unpredictable words following a repetition elicited a relative positivity. Reanalysis of previous data confirmed the presence of a similar effect following an er. The effect may reflect difficulties in resuming linguistic processing following any disruption to speech.
Type: Journal Article
URI: http://hdl.handle.net/1893/1997
URL: http://www.sciencedirect.com/science/journal/0093934X
DOI Link: http://dx.doi.org/10.1016/j.bandl.2009.07.003
Rights: Published in Brain and Language by Elsevier.
Affiliation: Psychology
University of Edinburgh
Psychology

Files in This Item:
File Description SizeFormat 
Donaldson4.pdf719.92 kBAdobe PDFView/Open


This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.