Investigating the comprehension and perception of reduced speech with pupillary response

Abstract

Description

Spontaneous, casual speech is highly variable, in part due to reduction processes. Listeners handle these reductions in everyday communication; however, these forms present challenges for models of speech perception and lexical processing. Previous research has found that reaction times to reduced word-medial stops are longer, indicating that they are more difficult to process than words with unreduced word-medial stops (Tucker, 2011). The current study examines spoken word processing (as measured by pupil dilation) of reduced and unreduced word-medial stops to determine (a) if the pupillary response to reduced forms corresponds to reaction time results, and (b) when in time any differences emerge. Thirty-nine native speakers of North American English completed a listen-and-repeat task in which 80 isolated disyllabic reduced and unreduced word-medial /d/ and /g/ items (40 of each phoneme) were presented. The pupil size data and speech productions are analyzed and will be reported. The results indicate significantly greater pupil dilation for reduced /d/ and /g/. Words containing /d/ elicited greater dilation than those containing /g/, for reduced and unreduced forms. This suggests that, although word-medial stop reduction is frequent in English, an increased processing load is incurred, mirroring previous reaction time results.

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http://purl.org/coar/resource_type/c_6670

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en

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