Throughout the life span, we are capable of representing quantities in the absence of language, or nonsymbolically. Additionally, over the course of development, we learn many symbolic measurement systems for representing quantities such as time and number. Despite substantial evidence of a relation between the acquisition of symbolic and…

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…