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Impaired Generalization of Speaker Identity in the Perception of Familiar and Unfamiliar Voices

Lavan, N; Scott, SK; McGettigan, C; (2016) Impaired Generalization of Speaker Identity in the Perception of Familiar and Unfamiliar Voices. Journal of Experimental Psychology: General , 145 (12) pp. 1604-1614. 10.1037/xge0000223. Green open access

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Abstract

In 2 behavioral experiments, we explored how the extraction of identity-related information from familiar and unfamiliar voices is affected by naturally occurring vocal flexibility and variability, introduced by different types of vocalizations and levels of volitional control during production. In a first experiment, participants performed a speaker discrimination task on vowels, volitional (acted) laughter, and spontaneous (authentic) laughter from 5 unfamiliar speakers. We found that performance was significantly impaired for spontaneous laughter, a vocalization produced under reduced volitional control. We additionally found that the detection of identity-related information fails to generalize across different types of nonverbal vocalizations (e.g., laughter vs. vowels) and across mismatches in volitional control within vocalization pairs (e.g., volitional laughter vs. spontaneous laughter), with performance levels indicating an inability to discriminate between speakers. In a second experiment, we explored whether personal familiarity with the speakers would afford greater accuracy and better generalization of identity perception. Using new stimuli, we largely replicated our previous findings: whereas familiarity afforded a consistent performance advantage for speaker discriminations, the experimental manipulations impaired performance to similar extents for familiar and unfamiliar listener groups. We discuss our findings with reference to prototype-based models of voice processing and suggest potential underlying mechanisms and representations of familiar and unfamiliar voice perception. (PsycINFO Database Record (c) 2016 APA, all rights reserved)

Type: Article
Title: Impaired Generalization of Speaker Identity in the Perception of Familiar and Unfamiliar Voices
Open access status: An open access version is available from UCL Discovery
DOI: 10.1037/xge0000223
Publisher version: http://doi.org/10.1037/xge0000223
Language: English
Additional information: © 2017 American Psychological Association. This article may not exactly replicate the authoritative document published in the APA journal. It is not the copy of record.
Keywords: Social Sciences, Psychology, Experimental, Psychology, familiarity, generalization, representations, vocal flexibility, voice processing, FACE RECOGNITION, ISOLATED VOWELS, HUMAN LAUGHTER, TALKER SEX, IDENTIFICATION, DISCRIMINATION, SPEECH, INTEGRATION
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Speech, Hearing and Phonetic Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1537628
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