I think this would be interesting to research, but of course I'm not going to ask everyone at what age they were fluent in their first language because that's just awkward, like posting your IQ or various other statistics about yourself. Mostly I just want to see how functions relate to language ability. Here is my hypothesis if anyone wants to test:
1. EIE
2. ILI
3. LIE
4. IEI
5. EII
6. LII
7. ESI
8. ESE
9. SEI
10. IEE
11. LSI
12. SLE
13. SEE
14. ILE
15. LSE
16. SLI
This mostly just segues into some other stuff I want to look at but this is way easier than those to look at since you can just pull up statistics from people who aren't shy about it and be done.
1. EIE
2. ILI
3. LIE
4. IEI
5. EII
6. LII
7. ESI
8. ESE
9. SEI
10. IEE
11. LSI
12. SLE
13. SEE
14. ILE
15. LSE
16. SLI
This mostly just segues into some other stuff I want to look at but this is way easier than those to look at since you can just pull up statistics from people who aren't shy about it and be done.