Masked morphological priming and sensitivity to the statistical structure of form-to-meaning mapping in L2
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Description: In this project, we investigated masked morphological priming in 80+ L1 Italian-L2 English speakers. We tracked the participants' L2 proficiency profile with a wide battery of tests on their lexical, morphological, phonological, spelling, and semantic abilities. We find that masked priming in L2 is critically modulated by proficiency; genuine morphological priming only arises as proficiency grows, while and orthographic priming (brothel-BROTH) shrinks as L2 competence increases. Age of acquisition was also evaluated, and did not affect the priming pattern. Furthermore, we showed that L2 priming is also modulated by sensitivity to graded, probabilistic relationships between form and meaning, as tracked by Orthography--to--Semantics Consistency (OSC). Overall, these data illustrate the trajectory towards a fully consolidated L2 lexicon, and show that masked priming is a key tracker of this process.
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