Development and validation of an online tool to assess perceived portion size norms of discretionary foods.

ABSTRACT:

Background

Perceived portion size norms (typical perception of how much of a given food individuals choose to eat at a single occasion) may have shifted towards larger sizes due to the ubiquity of large serving sizes. However, there is a lack of validated tools to assess such norms for energy-dense and nutrient-poor discretionary foods. This study aimed to develop and validate an online tool to examine the perceived portion size norms of discretionary foods.

Methods

An online image-series tool of 15 commonly consumed discretionary foods was developed, with eight successive portion size options included for each food. Using a randomised-crossover design, adult consumers (18-65 years) completed the validation study in a laboratory session (April-May 2022) by reporting their pe

SUBMITTER: Liu Q 

PROVIDER: S-EPMC10393777 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature