The critical period: some thoughts on Grimshaw et al (1998)

Grimshaw et al. (1998), based on their study of an adolescent first language acquirer, support the notion of a critical period. This article discusses the findings of Grimshaw et al. in the context of second language acquisition research. The study by Grimshaw et al. is argued to be of potentially significant value in gaining an understanding of age-related differences in language acquisition. Some issues for Grimshaw et al. to address are raised.