Young children are said to pick up languages with a sponge-like ease, but for many older children and adults at different stages of life learning a foreign language is an overwhelming, if not an impossible, task. Or so it would appear.
When we focus on young children learning any language, it is recognised that input is much more ‘organic’, and as such, is a natural state to develop a language fully. Children learn implicitly; that’s to say they absorb and process a new language without having the whole cognitive process described to them beforehand. Therefore, the younger you are, the better you are meant to be able to pick up a language to sound ‘native’.
Much research has been done into the cognitive development of children and their optimal learning age. According to the critical period hypothesis, (CPH- a hypothesis based on research done in the 1950s) there’s a certain window in which second language acquisition skills are at their peak. Researchers disagree over just how long that window lasts – some, such as Krashen (Lateralization, language learning, and the critical period: Some new evidence., 1973) say that it ends by the age of 5 or 6, while others say that it extends all the way through puberty – but after that period is over, it becomes much harder for a person to learn a new language. It’s not impossible, but children in that critical period have an almost universal success rate at achieving near fluency and perfect accents, while an adult learner’s results are more hit-and-miss, losing the plasticity needed to develop accent.
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