Vygotskian sociocultural theory of mind holds that language mediates thought. According to the theory, speech does not merely put completed thought into words; rather, it is a tool to refine thought as it evolves in real time. This study investigated from a sociocultural theory of mind perspective how nine beginning learners of Latin used private…

Examination of existing empirical and theoretical literature suggests there is no conclusive support for the existence of a critical period for human speech learning. Assumption of a critical period may inhibit the search for testable hypotheses concerning observed adult-child differences in second language production. (Author/LMO)