You can just tell sometimes.

Crew got a little plaid/argyle outfit from Grandma Karen the other week and looks like such a little sport when he wears it. If there was any question who he looked like before, it is settled now. He even dresses like his Daddy! =) He already loves lacrosse and had his first 'practice' with Brock and Chip the other night. Being outside is a sure way to calm him down and make him happy.
As for Wyndham, I asked her if she wanted to hold Crew for a picture. She didn't say yes or no, but when I set the Gameboy aside and put Crew in her lap, well, it was obvious. The answer was "no". She really wanted to play Gameboy instead. Sometimes people ask us how we know what Wyndham wants when she doesn't speak. The answer is sometimes she uses sign language. Sometimes she nods yes or no. Sometimes she points. Sometimes she uses her Dynavox communication device. Sometimes she gives you a big grin. Other times you can just tell. =)