What can he do now that he couldnt do before? (refer to the contrast with "themsatic apperception test" - On report #4 March 6)

From the text:

"I know I'm getting a little smarter every day. I know punctuation, and I can spell good. I like to look up all the hard words in the dictionary and I remember them. And I try to write these progress reports very careful but that's hard to do. I am reading a lot now, and Miss Kinnian says I read very fast. And I even understand a lot of the things I'm reading about, and they stay in my mind. There are times when I can close my eyes and think of a page and it all comes back like a picture."