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Completed

NCT Number: NCT02603263

The Effect of a Descriptive Norm Promoting Vegetable Selection in a Workplace Restaurant Setting: an Observational Study

Encouraging individuals to eat fruit and vegetables is difficult. However, recent evidence suggests that using social-based information might help. For instance, it has been shown that if people think that others are eating lots of fruit and vegetables, that they will consume more food to match the 'norm'.The purpose of this study was to determine whether social norm messages could be used to enhance vegetable purchases in workplace restaurants, in an observational study.

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Key information

Conditions

Eating Behaviour Behavior Behavior, Animal Feeding Behavior

Sex eligibility

All sexes

Study type

Observational

Primary location

University of Birmingham

Birmingham, West Midlands, B15 2TT, United Kingdom

About this study

In this study the investigators hypothesised that placing posters containing social norm messages promoting vegetable consumption in three workplace restaurants, would increase the purchase of meals with vegetables, and that this effect would be sustained over time. The investigators recruited three restaurants to this study. For two weeks (Pre-intervention phase) the investigators used till receipts to monitor the number of meals sold with or without vegetables at baseline. For the following two weeks (Intervention phase) the investigators placed social norms posters around the three restaurants, while continuing to collect till receipts. After this, the posters were removed, and receipts were monitored for a final two weeks (Post-intervention).

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Purchase of a meal at one of the restaurants

Exclusion criteria

  • None

Treatment and study plan

Social Norms Poster

Other

A poster containing a social norms message: "Most people here choose to eat vegetables with their lunch"

Primary outcomes

  1. Percentage of meals containing vegetables

    Time frame: 7 months

Sponsors and collaborators

Lead sponsor

University of Birmingham

Other

Collaborators

  • C H & Co Ltd.
  • Economic and Social Research Council, United Kingdom

Registry information

Official study title

The Effect of a Descriptive Norm Promoting Vegetable Selection in a Workplace

Important dates

Study start
2015
Primary completion
2015
Study completion
2015
First posted
Nov 11, 2015
Registry last updated
Nov 11, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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