From the WSJ, in an article titled: "Overweight Kids Learn Willpower With a Sniff and a Nibble"
Dr. Boutelle, working with children between the ages of 8 and 12, recently completed a four-month study with 40 obese kids and conducted an earlier eight-week study involving 36 overweight children. The results: Children seem capable of learning to subdue their food cravings, but it isn't clear how long the willpower lasts after the experiments are over.
In the studies, the participants are given a favorite food, such as a brownie, and told to rate their craving on a scale of 1 to 5—1 means "I can resist this," and 5 is "I'm dying for it," Dr. Boutelle says. The children are instructed to put the brownie down, wait 30 seconds and rate their cravings again. Another rating is recorded after the participants sniff the brownie, then again after taking a small bite and later after staring at it for five minutes. Finally, Dr. Boutelle directs the children to throw the brownie away.
Read it all here: http://online.wsj.com/article/SB10001...