Using plate mapping to examine portion size and plate composition for large and small divided plates
2014
Sharp, David E. | Sobal, Jeffery | Wansink, Brian
Does the size of a plate influence the serving of all items equally, or does it influence the serving of some foods – such as meat versus vegetables – differently? To examine this question, we used the new method of plate mapping, where people drew a meal on a paper plate to examine sensitivity to small versus large three-compartment divided plates in portion size and meal composition in a sample of 109 university students. The total drawn meal area was 37% bigger on large plates than small plates, which showed that the portion of plate coverage did not differ by plate size. Men and women drew bigger vegetable portions and men drew bigger meat portions on large plates when compared to small plates. These results suggest that men and women are differentially sensitive to plate size for overall meal size and for meal composition. Implications for decreasing portion size and improving meal balance are that plate size may influence portion size and change the proportions of foods served.
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