There are a couple of ways that Joshua actively participates these days. I previously mentioned his love for coughing. He continues to respond with a cough if he hears anyone around cough. When he sneezes, he coughs several times in an attempt to duplicate the sound. A few days ago, when Joshua first attempted to crawl, we said, "Yay!" every time he pulled in his knees and pushed. After a few of these, he started responding with his version of the sound. It is more of a high-pitched shriek, but he definitely does it in response to our cheers!