Is there a critical period for second language acquisition? When should one begin learning a second language? These are questions that have always been present and they stiil have not become any less controversial or complex. There is not any specific age that could be determined or proclaimed to be the most appropriate. A lot of things must be taken into consideration with spesific emphasis on the goals of the learner. Whether reaching a native -like accent and proficency is the ultimate aim or obtaining a certain level that will enable an everyday communication? Since a great number of experiments and research have shown that both younger and older students can achieve high levels in their second language, a fair atribute and attention should be paid to both theories respectfully.It has been hypothesized that there is a critical period for second language acquisition as well as for first language acquisition. According to this theory there is a time in human development when the brain is predisposed for success in language learning. It is belived that some developmental changes in the brain affect the nature of language acquisition. Therefore, any language learning that occurs after the end of the critical period may not be based on innate biological structures belived to contribute to first language acquisition or second language acquisition in early childhood. The general learning abilites that the older learners depend on, are claimed to be less efective than the innate capacities available to young children. Most studies of the relationship between age of acquisition and second language development have focused on learners’pronounciation. It is frequently observed that most children from immigrant families eventually speak the language of their new community with native –like fluency and accent, while their parents quite often fall behind in this mastery even long after they had been living and working in the new community. Nevertheless, some researches argue that older learners may have one advantage: they appear to be able to learn faster in the early stages of second language learning. Age is one of the characteristics that determine the way in which an individual approaches second language learning. But the opportunities for learning (inside the classroom and outside), the motivation to learn , and individual differences in aptitude for language learning are also important determining factors that affect both rate of learning and eventual susscess in learning. It must be acknowledged that achieving native-like mastery of the second language is neither a realistic nor a neccessarilya desired goal for many second language learners in many educational contexts.
Differences and similarities between late first-language and second-language learning