Recent research provides evidence that individuals shift in their perception of variants depending on social characteristics attributed to the speaker.This paper reports on a speech perception experiment designed to test the degree to which the age attributed to a speaker influences the perception of vowels undergoing a chain shift. As a result of the shift, speakers from different generations produce different variants from one another. Results from the experiment indicate that a speaker's perceived age can influence vowel categorization in the expected direction. However, only older participants are influenced by perceived speaker age.This suggests that social characteristics attributed to a speaker affect speech perception differently depending on the salience of the relationship between the variant and the characteristic.The results also provide evidence of an unexpected interaction between the sex of the participant and the sex of the stimulus.The interaction is interpreted as an effect of the participants' previous exposure with male and female speakers.The results are analyzed under an exemplar model of speech production and perception where social information is indexed to acoustic information and the weight of the connection varies depending on the perceived salience of sociophonetic trends.
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