In this article I provide evidence that despite frequently cited differences between child first language (L1) and adult second language (L2) speakers in overt behavior (performance) during grammatical development, the nature, source, and limits of implicit knowledge (competence) in native and second language grammars are equivalent (i.e., they…

This study documents the sensitivity of English-French interlanguage to the process-result distinction with respect to the licensing of multiple postnominal genitives, despite a lack of direct positive or negative evidence for this distinction in the input. Documentation argues that the Universal Grammar-governed map between syntactic structures…