"Once you pop open a stack of potato chips, it can sometimes be hard to stop until you suddenly realize you are scraping the bottom of the can. Now, new research suggests that inserting colored potato chips might actually help curb your appetite -- and the findings could have implications for other snacks, too. Researchers at the University of Pennsylvania and Cornell University gave students one of two types of Lays' Stackable potato chips. The first group was given a stack of chips with red dyed, edible potato chips dividers that were interspersed at several different intervals, suggesting serving sizes anywhere from 5 to 14 chips. The other group was given the traditional stack of potato chips with no edible dividers. What the researchers found was that inserting colored potato chips at regular intervals in the stacks caused people to eat fewer chips overall. In fact, the group with the edible serving size dividers reduced their potato chip consumption by 50 percent. The results appear in the May issue of the Journal of Health Psychology. "The colored chip did all the work," says Paul Rozin, a professor of psychology at the University of Pennsylvania and one of the authors of the study. "This study showed that segmenting foods gets people to eat less. "