Masked morphological priming tracks the development of a fully mature lexical system 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, and opaque (corner-CORN) and orthographic priming (brothel-BROTH) shrink 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.


This repo contains: in /rawData, all the participants' data files as they came out of the testing computers; in /analysis, the pre-processing and the analysis scripts; in /stimuli, the stimuli used for the masked priming experiment with all covariates (e.g., word frequency, word length). /tools contains instead one subsidiary piece of code, which the authors used to clean the dataset from outliers...


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