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When appearance does not match accent: neural correlates of ethnicity-related expectancy violations
(2017)
Most research on ethnicity in neuroscience and social psychology has focused on visual cues. However, accents are central social markers of ethnicity and strongly influence evaluations of others. Here, we examine how varying auditory (vocal accent) and visual (facial appearance) information about others affects neural correlates of ethnicity-related expectancy violations. Participants listened to standard German and Turkish-accented speakers and were subsequently presented with faces whose ethnic appearance was either congruent or incongruent to these voices. We expected that incongruent targets (e.g. German accent/Turkish face) would be paralleled by a more negative N2 event-related brain potential (ERP) component. Results confirmed this, suggesting that incongruence was related to more effortful processing of both Turkish and German target faces. These targets were also subjectively judged as surprising. Additionally, varying lateralization of ERP responses for Turkish and German faces suggests that the underlying neural generators differ, potentially reflecting different emotional reactions to these targets. Behavioral responses showed an effect of violated expectations: German-accented Turkish-looking targets were evaluated as most competent of all targets. We suggest that bringing together neural and behavioral measures of expectancy violations, and using both visual and auditory information, yields a more complete picture of the processes underlying impression formation.
Language Change
(2017)
The present chapter outlines a research program for historical linguistics based on the idea that the object of the formal study of language change should be defined as grammar change, that is, a set of discrete differences between the target grammar and the grammar acquired by the learner (Hale 2007). This approach is shown to offer new answers to some classical problems of historical linguistics (Weinreich et al. 1968), concerning, specifically, the actuation of changes and the observation that the transition from one historical state to another proceeds gradually. It is argued that learners are highly sensitive to small fluctuations in the linguistic input they receive, making change inevitable, while the impression of gradualness is linked to independent factors (diffusion in a speech community, and grammar competition). Special attention is paid to grammaticalization phenomena, which offer insights into the nature of functional categories, the building blocks of clause structure.
Social agency and grammar
(2017)