1. Younger learners generally acquire a second language syntax more easily than adults. However, many adults can still learn a second language grammar perfectly and speak it fluently.
2. Studies have found no significant differences between how quickly men and women learn a second language. However, women tend to have greater verbal fluidity while men are better at computing compositional rules.
3. Individual learner aptitude, which includes phonemic coding ability, inductive language learning ability, and associative memory capacity, influences how quickly one learns a second language.