Don't tell me what I should do, but what others do : the influence of descriptive and injunctive peer norms on fruit consumption in adolescents

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2014
Autor:innen
de Ridder, Denise T. D.
de Vet, Emely
de Wit, John B. F.
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British Journal of Health Psychology (BJHP). Wiley. 2014, 19(1), pp. 52-64. ISSN 1359-107X. eISSN 2044-8287. Available under: doi: 10.1111/bjhp.12030
Zusammenfassung

Objectives
While healthy eating patterns are of high importance in adolescence, most adolescents portray quite unhealthy eating behaviour. One reason for this may be that social norms among peers tend to be unsupportive of healthy eating. The current study investigates whether communicating health-promoting descriptive and injunctive norms influences adolescents' intended and actual fruit consumption.

Design
The study employed an experimental prospective design.

Methods
A norm message manipulation (descriptive vs. injunctive vs. no‐norm control) was administered to high school students, after which fruit intake intention (N = 96) was assessed. At follow‐up, actual fruit intake over 2 days (N = 80) was recorded.

Results
Adolescents receiving the descriptive norm did not report higher fruit intake intentions than the control group, but did consume (borderline, p = .057) significantly more fruit in the following 2 days (2.3 portions per day) than the control condition (1.7 portion per day). Adolescents receiving the injunctive norm reported lower fruit intake intentions than the other two groups, but actual fruit consumption (1.5 portions per day) was similar to that of the control group.

Conclusions
Health‐promoting injunctive norms not only had no positive effects on fruit intake but actually caused a decrease in fruit intake intentions, indicating that injunctive norms may be vulnerable to reactance. A health‐promoting descriptive norm was found to positively affect fruit intake in adolescents. No effect on fruit intake intention was found. Results show that simple single‐sentence norm messages hold the potential to substantially influence health behaviour.

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ISO 690STOK, F. Marijn, Denise T. D. DE RIDDER, Emely DE VET, John B. F. DE WIT, 2014. Don't tell me what I should do, but what others do : the influence of descriptive and injunctive peer norms on fruit consumption in adolescents. In: British Journal of Health Psychology (BJHP). Wiley. 2014, 19(1), pp. 52-64. ISSN 1359-107X. eISSN 2044-8287. Available under: doi: 10.1111/bjhp.12030
BibTex
@article{Stok2014-02shoul-49926,
  year={2014},
  doi={10.1111/bjhp.12030},
  title={Don't tell me what I should do, but what others do : the influence of descriptive and injunctive peer norms on fruit consumption in adolescents},
  number={1},
  volume={19},
  issn={1359-107X},
  journal={British Journal of Health Psychology (BJHP)},
  pages={52--64},
  author={Stok, F. Marijn and de Ridder, Denise T. D. and de Vet, Emely and de Wit, John B. F.}
}
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