Why people are so good at spotting product downsizing and so bad at judging supersizing

(INSEAD) Consumers drastically underestimate portion supersizing but are incredibly accurate at spotting downsizing, making it difficult for food marketers to cut giant portions. But there is a way to make customers more receptive to smaller portions.

from EurekAlert! - Social and Behavioral Science http://ift.tt/2jmfJah