We know from previous work with adults that expectations about fullness are important determinants of meal-size selection. In this study we focused on fullness expectations in children in relation to popular snack food products, and specifically whether familiarity with these foods would change the children's expectations. We found that children who reported eating our snack foods more often expected them to be more filling. Furthermore, children who were less familiar with the foods relied on the physical appearance of the food (e.g. volume) in their judgments about fullness. Our findings suggest that familiarity with snack foods helps children to learn about fullness and these expectations may be used to guide portion size selection and energy intake.
Hardman, C.A., McCrickerd, K., & Brunstrom, J. M. (in press). Children’s familiarity with snack foods changes expectations about fullness. American Journal of Clinical Nutrition.