Segmental and suprasegmental cues can both contribute to listeners’ accent strength and distance judgments. This study examined the influence of a suprasegmental cue—rhythm—on listeners’ judgments of accent distance. Rhythm was quantified using two measures of variability in vocalic interval duration: normalized pairwise variability index (nPVI) and VarcoV. Thirty adults ranked productions from female and male speakers from six L1 and six L2 English varieties (24 speakers) across six sentences based on their perceived distance from Midland American English (the local dialect). Linear mixed effect models predicted accent distance ratings from rhythm measures—specifically, differences in nPVI and VarcoV between the L1/L2 speakers and Midland speakers, with speaking rate and sentence length as covariates. Differences between L1/L2 speakers’ and Midland speakers’ nPVI and VarcoV scores did not significantly predict accent distance rankings. However, significant interactions between nPVI and certain accents (e.g., Irish, Southern American, Cantonese-accented English) suggest that rhythmic properties may significantly impact accent distance judgements for some accent varieties. These results provide further insight into how rhythmic cues contribute to accent perception. [Work supported by NSF grants 1941691 and 1941662].
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