Dividing a Fixed Portion into More Pieces Leads to Larger Portion Size Estimates of JELL-O® Squares

Children's estimates of food portion size: the development and evaluation of three portion size assessment tools for use with children.

A number of methods have been developed to assist subjects in providing an estimate of portion size but their application in improving portion size estimation by children has not been investigated systematically. The aim was to develop portion size assessment tools for use with children and to assess the accuracy of children's estimates of portion size using the tools. The tools were food photo...

Sensitivity to portion size of unhealthy foods

Portion size: a qualitative study of consumers' attitudes toward point-of-purchase interventions aimed at portion size.

This qualitative study assessed consumers' opinions of food portion sizes and their attitudes toward portion-size interventions located in various point-of-purchase settings targeting overweight and obese people. Eight semi-structured focus group discussions were conducted with 49 participants. Constructs from the diffusion of innovations theory were included in the interview guide. Each focus ...

Comparison of a dietary record using reported portion size versus standard portion size for assessing nutrient intake.

OBJECTIVE Because the percentage of missing portion sizes was large in the Aerobics Center Longitudinal Study (ACLS), careful consideration of the accuracy of standard portion sizes was necessary. The purpose of the present study was to investigate the consequences of using standard portion sizes instead of reported portion sizes on subjects' nutrient intake. METHODS In 2307 men and 411 women...

Designing Pictogram for Food Portion Size

The objective of this paper is to investigate a new approach based on the idea of pictograms for food portion size. This approach adopts the model of the United States PharmacopeiaDrug Information (USP-DI). The representation of each food portion size composed of three parts: frame, the connotation of dietary portion sizes and layout. To investigate users’ comprehension based on this approach, ...