| Summary: | Phonetic accommodation is the process whereby speakers in an interaction modify their speech in response to their interlocutor. The social-psychological theory of Communication Accommodation Theory (Giles 1973) predicts that speakers will converge towards (become more similar to) their interlocutors in order to decrease social distance, whereas they will diverge from (become less similar to) their interlocutors to accentuate distinctiveness or show disdain. Previous studies have found that phonetic accommodation is affected by many social, situational and linguistic factors (Abrego-Collier et al. 2011; Black 2012; Babel 2009, 2010, 2012; Babel et al. 2012; Kim, Horton & Bradlow 2011; Nielsen 2011; Pardo et al. 2012). With respect to accommodation across dialects, a handful of studies have suggested that the perceptual salience of the various differences between two dialects might affect the pattern; however, these studies make conflicting predictions. Trudgill (1986) predicts that speakers will converge more towards the more salient dialectal differences, while Kim et al. (2011) and Babel (2009, 2010) suggest the opposite: that speakers will converge on the less salient differences.
This thesis investigates how the perceptual salience of 6 differences between Buenos Aires Spanish and Madrid Spanish affect the pattern of phonetic accommodation in conversation. The results are considered both in terms of the magnitude of the changes that the participants make as well as the direction of the change (convergence or divergence). The results show that perceptual salience has a significant effect on the magnitude of the change, with all participants making greater changes as perceptual salience increases. On the other hand, perceptual salience was found not to have a consistent effect for all speakers on the likelihood of converging or diverging on the dialectal differences. I argue that the lack of consistent effect of salience on the direction of the change stems from individual differences in motivation to take on the opposing dialect norms and issues of personal identity, whereas the very consistent effect of salience on the magnitude of the change suggests that there is something more basic or systematic about how salience interacts with the extent to which speakers accommodate.
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