Biological differences in language learners

The purpose of this study is to reinvestigate the issue of biological differences, i.e. age, gender and brain in language learning. In spite of the fact that study on the biological differences in language learning is not a very young field, there are a lot of controversies remained unanswered. For instance, it is unknown how exactly language is processed in the brain. There is not either a general consensus concerning the fine structure of different neuronal regions that makes them an appropriate habitat for the functions that are impaired after damage to those areas. Providing different perspectives and various reasons, this paper concludes that since everyone enjoys a unique brain with unique genetic structure, so the different components of language- phonology, morphology, syntax, lexicon, and pragmatics are acquired relatively independently of each other and different for everyone and their development might follow different timetables.