I have a 7 yr old and here are some of my observations that jibe with this article:

1. He is more likely to try a new or questionable food if I leave the room for a bit.
2. He is also more likely to want to try something if I tell him it's so good it's all for me and he isn't allowed to have any (seems to simple, but it works!)
3. I've read somewhere that a new food has to be put in front of a child an average of 10 times before they will try it. I always add in foods that I want my son to try and tell him if he doesn't want it to leave it on his plate.
4. I'm a big fan of food camouflaging. I put thin slices of apple in quesadillas and grate carrots and broccoli into spaghetti sauce, chili and sloppy joes. I also make a mean chicken noodle soup. I use a ton of veggies in the broth and then process and blend them and re-add them to the soup so the only thing he's chewing is chicken and noodles, but he's getting vitamins and minerals from celery, onion, peppers, broccoli, carrots,