First language (L1) attrition in adulthood offers new insight on neuroplasticity and the role of language experience in shaping neurocognitive responses to language. Attriters are multilinguals for whom advancing L2 proficiency comes at the cost of the L1, as they experience a shift in exposure and dominance (e.g., due to immigration). To date,…

Develops criteria to establish whether a second language (L2) speaker has achieved native-like proficiency. The study compares the performance of near-native speakers of English, non-native speakers, and controls on two tasks designed to tap aspects of Universal Grammar claimed to be subject to critical period effects. Findings reveal that…