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The role of domain general cognitive mechanisms in bilingual language production

Title of thesis: THE ROLE OF DOMAIN GENERAL COGNITIVE MECHANISMS IN BILINGUAL LANGUAGE PRODUCTION Alison Ruppel Shell, M.S., 2015 Thesis directed by: Dr. L. Robert Slevc Department of Psychology Bilingual language production is widely believed to be a competitive process. Bilinguals may manage this competition by relying on inhibiting one language while speaking in the other. However, it remains unclear if this process relies on domain general inhibitory mechanisms, and, if so, when and where during language production control is applied. The current study investigates these issues by experimentally manipulating demand on domain-general inhibitory control during a language switching paradigm. If inhibitory control is required to switch between languages, inhibitory demand during the switch trials is predicted to make switching more difficult. Across three experiments, switching costs were not exacerbated when inhibitory control was taxed, language switching was less costly during inhibitiondemanding trials. These findings question the role of inhibitory control in language switching and suggest revising the current models of language control in bilingual