>It's just a matter on how much time you spend learning the language. I'm not sure if you're making a personal observation that's unrelated to the specific fin

>It's just a matter on how much time you spend learning the language. I'm not sure if you're making a personal observation that's unrelated to the specific findings in the research paper. That's fine but it may inadvertently make people think that's what the paper concludes. The particular paper[0] says that when testing for grammar accuracy in a 2nd language, the years of experience is not as predictive as age of of first exposure. The same dropoff of learning grammar happens to immersion as well as non-immersion older learners. The authors don't claim to know why that happens but nevertheless noticed the patterns. [0] found a full pdf in amazon s3: https://s3.amazonaws.com/l3atbc-public/pub_pdfs/JK_Hartshorne_JB_Tenenbaum_S_Pinker_2018.pdf https://s3.amazonaws.com/l3atbc-public/pub_pdfs/JK_Hartshorn...