Changing Portion Size Descriptions in a Cafeteria

Completed · Not applicable

Conditions studied: Food Selection, Obesity, Weight Gain, Food Preferences

In brief

The goal of this this intervention is to test the degree to which a portion size labeling intervention influences consumer selection of smaller portions at two large cafés. The main question it aims to answer is: Do consumers order fewer calories when the portion size label for the smaller entree is called "standard" instead of "small"? Participants will order lunch as usual in the two cafes (one intervention, one control) for 5.5 months, and all order items will be recorded in the check-out system. One cafe will receive the labeling intervention, while the other will not. Researchers will compare the average calories per order between the two cafes to see if there are differences.

Key facts

Study ID

NCT06263621

Run by

University of Pennsylvania

People needed

101481

Starts

2024-01-11

Expected to finish

2024-05-29

Last updated by the study team

2024-07-11

Who can join

Age: any. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• All customers who make a lunch purchase at the cafes

You may not qualify if…

• Purchases made outside of lunch service.

Where it is running

• Courtyard Cafe — Boston, Massachusetts, United States
• Elements Cafe — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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