When they are interested in learning a language and they see meaningful connections, they begin to risk to produce language, which help them acquire faster. 

Introverted students have been shown to take longer to acquire a language because they’re more hesitant to make mistakes. On the other hand

Extrovert students, on the other hand  are more likely to go out on a limb and try out their newly learned vocabulary.

Exposure is an important factor in language comprehension and acquisition. Parents who prioritize language learning are more likely to push their child to keep trying even when it feels difficult. 

There is a consensus that certain aspect are affected by the age of the learner.