Rewards can be used effectively with repeated exposure to increase liking of vegetables in 4-6-year-old children

Nadia Corsini, Amy Slater, Adam Harrison, Lucy Cook, David Cox

    Research output: Contribution to journalArticlepeer-review

    53 Citations (Scopus)


    Abstract Objective To examine whether parents offering a sticker reward to their child to taste a vegetable the child does not currently consume is associated with improvements in children's liking and consumption of the vegetable. Design A randomized controlled trial evaluated the effectiveness of exposure only (EO) and exposure plus reward (E + R), relative to a control group, on children's liking and consumption of a target vegetable. Assessments were conducted at baseline and 2 weeks from baseline (post-intervention). Follow-up assessments were conducted at 4 weeks and 3 months from baseline. Setting The study took place in Adelaide, South Australia. Participants were self-selected in response to local media advertisements seeking to recruit parents finding it difficult to get their children to eat vegetables. Subjects Participants were 185 children (110 boys, seventy-five girls) aged 4-6 years and their primary caregiver/parent (172 mothers, thirteen fathers). Results The E + R group was able to achieve more days of taste exposure. Both EO and E + R increased liking at post-intervention compared with control and no further change occurred over the follow-up period. All groups increased their intake of the target vegetable at post-intervention. Target vegetable consumption continued to increase significantly over the follow-up period for E + R and control but not for EO. Conclusions The findings provide support for the effectiveness of using a sticker reward with a repeated exposure strategy. In particular, such rewards can facilitate the actual tastings necessary to change liking.

    Original languageEnglish
    Pages (from-to)942-951
    Number of pages10
    JournalPublic Health Nutrition
    Issue number5
    Publication statusPublished - May 2013


    • Children
    • Intervention
    • Keywords Taste exposure
    • Reward
    • Vegetables


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