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Consumers' Preference for Sustainable Food

Can we Prime Sustainable Food Choice? A Mix-methods Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04955301
Enrollment
1000
Registered
2021-07-08
Start date
2022-09-27
Completion date
2023-12-31
Last updated
2024-01-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Food Consumption

Brief summary

This study aims to test and compare the effectiveness of three priming interventions on consumers' selection of sustainable foods: priming with environmental benefits, health benefits and co-benefits (environment and health benefits).

Interventions

The priming manipulation will be embedded in one discrete choice experiment to test the effect of three priming interventions: priming with health benefits, environment benefits, and co-benefits of having sustainable diets, respectively, on consumers' preference for sustainable foods, and the relative importance of proximal attributes (e.g. taste and price) and distant attributes (e.g., attributes related to environmental sustainability) in determining food choice preference, as well as testing whether the effects of these three priming interventions can be modified by consumers' social orientation values. The cueing manipulation will be achieved by asking participants to complete a word-search exercise.

Sponsors

The University of Hong Kong
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Subjects should be aged 18 years or above * Hong Kong residents * Be able to read Chinese

Exclusion criteria

* Subjects who have vegan or vegetarian diets * Subjects who have to follow special diets due to illnesses will be excluded.

Design outcomes

Primary

MeasureTime frameDescription
Consumers' preference for choosing sustainable foods measured by Discrete Choice ExperimentWithin 1 day of randomization* Measure name: consumers' food consumption preference * Measure tool: an online discrete choice experiment * Measure units: The frequency of choosing sustainable food

Secondary

MeasureTime frameDescription
Measure participants' social orientation value using Social Orientation Value ScaleWithin 1 day of randomization* Measure name: Social Orientation Value (SVO) * Measure tool: survey questionnaire * Measure units: subjects can slide along a continuum of own-other payoff allocations, measure units should be the times participants choose own or self.

Countries

Hong Kong

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026