How larger portions influence later choices


How larger portions influence later choices

By Caitlin Dow


Have oversized servings in restaurants distorted our view of what’s normal?

In a new study, scientists randomly assigned 277 people to be served a lunch with either a larger (440-calorie) or smaller (220- calorie) portion of quiche.

The next day, the participants were told to serve themselves a portion from a full, family- sized quiche. (The researchers pretended that the study had some other purpose.)

People who had gotten the larger serving on day one served themselves a larger portion on day two. What’s more, they also chose a larger serving when asked to identify a “normal” portion of quiche that day or a week later.

What to do

Think twice before you eat everything a restaurant serves you. Odds are, you’d feel full with less. Confused about what a portion of a given food should look like? Check out our handy guide.

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Photo: marysckin/

The information in this post first appeared in the June 2018 issue of Nutrition Action Healthletter.

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