Modifying children's food preferences: The effects of exposure and reward on acceptance of an unfamiliar vegetable

J Wardle, M-L Herrera, L Cooke, E L Gibson

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: The aim of this study was to evaluate two interventions (one reward-based and one exposure-based) for increasing children's acceptance of an unfamiliar vegetable compared with a no-treatment control. It was predicted that the exposure condition would increase liking for, and consumption of, the vegetable relative to either the reward or control group.

DESIGN: Using a randomized controlled design, participants were assigned to one of two intervention groups (exposure or reward) or to a no-treatment control condition, for a 2 week period. Liking for, and consumption of, red pepper was assessed before and after the treatment period.

SETTING: The study was conducted in three primary schools in London.

SUBJECTS: Parental consent was obtained for 49 out of a possible 72 children.

INTERVENTIONS: Interventions comprised eight daily sessions during which participants in the exposure group were offered a taste of sweet red pepper and told that they could eat as much as they liked. Participants in the reward group were shown a sheet of cartoon stickers and told that they could choose one of them on condition that they ate at least one piece of the pepper.

RESULTS: The exposure-based intervention significantly increased both liking (P=0.006) and consumption (P=0.03) compared with the control group. The outcome of the reward intervention was intermediate and did not differ significantly from the exposure or control conditions.

CONCLUSIONS: Repeated exposure to the taste of unfamiliar foods is a promising strategy for promoting liking of previously rejected foods in children.

Original languageEnglish
Pages (from-to)341-8
Number of pages8
JournalEuropean Journal of Clinical Nutrition
Volume57
Issue number2
DOIs
Publication statusPublished - Feb 2003

Keywords

  • Child
  • Child Behavior
  • Child, Preschool
  • Eating
  • Female
  • Food Preferences
  • Humans
  • Male
  • Reward
  • Vegetables

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