When to Start Second Language Teaching or Learning in an EFL Context
Shima Sharifi
International Journal of Computational Linguistics Research, Vol. 3, No. 4, 2012.
DOI: 
Link: http://www.dline.info/jcl/fulltext/v3n4/5.pdf
Abstract:
E-Learning is gaining momentum in many directions. One important focus is the learning of second language. In this paper we address this issue by codifying the determining the most effective period for learning. We have outlined the critical period of such learning. We also discuss the multiple critical periods in this paper.