The findings are published in the journal Food, Quality and Preference.
"This research supports the notion that eating for pleasure -- hedonic hunger -- is driven more by the availability of foods instead of the food already eaten," study co-author Brian Wansink, a professor of economics, said in a university news release.
"Just a bit satisfies, not magnifies, hunger and craving tendencies for snacks," he added.
"If you want to control your weight, here's the secret: Take a bite and wait. After 15 minutes all you'll remember in your head and in your stomach is that you had a tasty snack," Wansink said.