This is Professor Thomas Robb from Kyoto Sangyo University, and he is one of the world's renowned experts on extensive graded reading. 

Q: Tell us. Why should students do extensive reading?

Dr. Robb: Why? Because it works. I've done it for Japanese as well.

Really?

Yeah. So I chose a mystery novel writer and I read 35 of his books.

Really? In Japanese?

In Japanese, right. And of course, one nice thing about doing extensive reading, with say the same series, is that the ...