A just-completed study conducted by Cornell University nutritional scientist David Levitsky concludes that the most powerful predictor for how much children eat is how much food is put on their plates. Levitsky and associate Gordana Mrdjenovic monitored the food intake of 16 preschool children for 5 to 7 days in day care centers. "We found the more children are served, the more they eat, regardless of what they've eaten previously, including breakfast that day," says Levitsky. The findings run counter to previous studies on the subject - perhaps, suggests Levitsky, because the study was conducted in natural settings rather than laboratories.