The Hidden Rules Inside Your Head

You know your native language even if you cannot explain its rules. This unconscious library of knowledge allows you to instantly recognize a mistake in a sentence without knowing why it is wrong.

This hidden system is called linguistic competence. While you might struggle to define complex grammar terms, your brain effortlessly uses these rules every time you speak. This is different from linguistic performance, which is just the act of speaking or writing, including any stumbles or distractions. It is fascinating that you possess a sophisticated manual of language that you never consciously studied.