The role of phonology-to-orthography consistency in predicting the degree of pupil dilation induced in processing reduced and unreduced speech
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Issue Date
2023-05-22
Authors
Mukai, Yoichi
Järvikivi, Juhani
Tucker, Benjamin V.
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Subject
Abstract
The relationship between the ways in which words are pronounced and spelled has been
shown to affect spoken word processing, and a consistent relationship between pronunciation
and spelling has been reported as a possible cause of unreduced pronunciations being
easier to process than reduced counterparts although reduced pronunciations occur more
frequently. In the present study, we investigate the effect of pronunciation-to-spelling consistency
for reduced and unreduced pronunciations in L1 and L2 listeners of a logographic
language. More precisely, we compare L1 and L2 Japanese listeners to probe whether they
use orthographic information differently when processing reduced and unreduced speech.
Using pupillometry, the current study provides evidence that extends the hypothesis about
the role of orthography in the processing of reduced speech. Orthographic realization matters
in processing for L1 and L2 advanced listeners. More specifically, how consistent the
orthographic realization is with its phonological form (phonology-to-orthography consistency)
modulates the extent to which reduced pronunciation induces additional processing
costs. The results are further discussed in terms of their implications for how listeners process
reduced speech and the role of the orthographic form in speech processing.