What are the benefits of extensive reading?

Question

What are the benefits of extensive reading? More, specifically, in what ways is extensive reading helpful for learning a target language?

Responses based on research would be appreciated.

Answer 1

Based on these references (1, 2, 3), there are several benefits of extensive reading:

1. Once you reach a certain level, it is thought that most of your vocabulary acquisition comes from reading. The context should, of course, be comprehensible.
2. Extensive reading helps with writing and spelling.
3. Improved grammar.