Document Detail

Children's accuracy of portion size estimation using digital food images: effects of interface design and size of image on computer screen.
MedLine Citation:
PMID:  21073772     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To test the effect of image size and presence of size cues on the accuracy of portion size estimation by children. DESIGN: Children were randomly assigned to seeing images with or without food size cues (utensils and checked tablecloth) and were presented with sixteen food models (foods commonly eaten by children) in varying portion sizes, one at a time. They estimated each food model's portion size by selecting a digital food image. The same food images were presented in two ways: (i) as small, graduated portion size images all on one screen or (ii) by scrolling across large, graduated portion size images, one per sequential screen. SETTING: Laboratory-based with computer and food models. SUBJECTS: Volunteer multi-ethnic sample of 120 children, equally distributed by gender and ages (8 to 13 years) in 2008-2009. RESULTS: Average percentage of correctly classified foods was 60·3 %. There were no differences in accuracy by any design factor or demographic characteristic. Multiple small pictures on the screen at once took half the time to estimate portion size compared with scrolling through large pictures. Larger pictures had more overestimation of size. CONCLUSIONS: Multiple images of successively larger portion sizes of a food on one computer screen facilitated quicker portion size responses with no decrease in accuracy. This is the method of choice for portion size estimation on a computer.
Tom Baranowski; Janice C Baranowski; Kathleen B Watson; Shelby Martin; Alicia Beltran; Noemi Islam; Hafza Dadabhoy; Su-Heyla Adame; Karen Cullen; Debbe Thompson; Richard Buday; Amy Subar
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-11-15
Journal Detail:
Title:  Public health nutrition     Volume:  -     ISSN:  1475-2727     ISO Abbreviation:  Public Health Nutr     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9808463     Medline TA:  Public Health Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-8     Citation Subset:  -    
1USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030-2600, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Practice effect and beyond: reaction to novelty as an independent predictor of cognitive decline amo...
Next Document:  Effect of inhaled hypertonic saline on hospital admission rate in children with viral bronchiolitis:...