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Do implementation intentions help to turn good intentions into higher fruit intakes?

Jascha de Nooijer1, Emely de Vet, Johannes Brug

  • 1Department of Health Education and Promotion, Universiteit Masstricht, Masstricht, The Netherlands. j.denooijer@gvo.unimaas.nl

Journal of Nutrition Education and Behavior
|April 6, 2006
PubMed
Summary

Encouraging implementation intentions, a strategy to plan specific actions, significantly increased fruit intake in Dutch adults. This short-term strategy proved effective regardless of initial intentions, highlighting the importance of commitment.

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Area of Science:

  • Behavioral Science
  • Nutrition Psychology
  • Health Behavior Interventions

Background:

  • Dietary habits are crucial for public health.
  • Increasing fruit consumption is a common public health goal.
  • Understanding effective strategies for behavior change is essential.

Purpose of the Study:

  • To determine if implementation intentions increase fruit intake.
  • To investigate if goal intentions moderate the effect of implementation intentions on fruit intake.
  • To assess the role of commitment in the success of implementation intentions.

Main Methods:

  • A randomized controlled trial with 535 Dutch adults.
  • Participants were assigned to either receive implementation intention instructions or a control group.

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  • Two questionnaires were administered 1.5 weeks apart to measure fruit intake and intention commitment.

    • Main Results:

    • The implementation intention group reported a higher frequency of consuming an extra serving of fruit daily.
    • The positive effect of implementation intentions on fruit intake was not dependent on baseline goal intentions.
    • Higher commitment to implementation intentions correlated with greater increases in fruit intake.

    Conclusions:

    • Implementation intentions show promise as a strategy for short-term increases in fruit consumption.
    • The findings suggest that focusing on specific action plans can effectively promote healthier eating behaviors.
    • Commitment plays a key role in the successful adoption of new health behaviors.