Effects of calorie labeling and value size pricing on fast food meal choices: Results from an experimental trial
2008

Effects of Calorie Labeling and Pricing on Fast Food Choices

Sample size: 594 publication 10 minutes Evidence: moderate

Author Information

Author(s): Harnack Lisa J, French Simone A, Oakes J Michael, Story Mary T, Jeffery Robert W, Rydell Sarah A

Primary Institution: University of Minnesota

Hypothesis

Does providing calorie information and value size pricing influence fast food meal choices?

Conclusion

Calorie labeling and value size pricing had little effect on the food choices made by participants.

Supporting Evidence

  • Participants ordered meals from four different menu types.
  • Calorie information was provided in a highlighted column on the menus.
  • Results showed no significant differences in calorie intake across menu conditions.

Takeaway

When people order fast food, seeing calorie counts and prices doesn't really change what they choose to eat.

Methodology

A randomized 2 × 2 factorial experiment where participants ordered meals from menus with varying calorie information and pricing.

Potential Biases

Potential subject reactivity due to the participation incentive.

Limitations

Participants were only exposed to the experimental conditions once, which may not reflect long-term behavior changes.

Participant Demographics

Participants included 594 adolescents and adults, predominantly white females (59.4%).

Statistical Information

P-Value

p=0.25

Statistical Significance

p=0.25

Digital Object Identifier (DOI)

10.1186/1479-5868-5-63

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