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Computer-based assessments of expected satiety predict behavioural measures of portion-size selection and food intake.
MedLine Citation:
PMID:  22989621     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Previously, expected satiety (ES) has been measured using software and two-dimensional pictures presented on a computer screen. In this context, ES is an excellent predictor of self-selected portions, when quantified using similar images and similar software. In the present study we sought to establish the veracity of ES as a predictor of behaviours associated with real foods. Participants (N = 30) used computer software to assess their ES and ideal portion of three familiar foods. A real bowl of one food (pasta and sauce) was then presented and participants self-selected an ideal portion size. They then consumed the portion ad libitum. Additional measures of appetite, expected and actual liking, novelty, and reward, were also taken. Importantly, our screen-based measures of expected satiety and ideal portion size were both significantly related to intake (p < .05). By contrast, measures of liking were relatively poor predictors (p > .05). In addition, consistent with previous studies, the majority (90%) of participants engaged in plate cleaning. Of these, 29.6% consumed more when prompted by the experimenter. Together, these findings further validate the use of screen-based measures to explore determinants of portion-size selection and energy intake in humans.
Authors:
Laura L Wilkinson; Elanor C Hinton; Stephanie H Fay; Danielle Ferriday; Peter J Rogers; Jeffrey M Brunstrom
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-15
Journal Detail:
Title:  Appetite     Volume:  -     ISSN:  1095-8304     ISO Abbreviation:  Appetite     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006808     Medline TA:  Appetite     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Ltd.
Affiliation:
Nutrition and Behaviour Unit, School of Experimental Psychology, University of Bristol, 12a Priory Road, Bristol, BS8 1TU, UK. Electronic address: Laura.Wilkinson@bristol.ac.uk.
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