Document Detail


Shifts in color discrimination during early pregnancy.
MedLine Citation:
PMID:  22947637     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The present study explores two hypotheses: a) women during early pregnancy should experience increased color discrimination ability, and b) women during early pregnancy should experience shifts in subjective preference away from images of foods that appear either unripe or spoiled. Both of these hypotheses derive from an adaptive view of pregnancy sickness that proposes the function of pregnancy sickness is to decrease the likelihood of ingestion of foods with toxins or teratogens. Changes to color discrimination could be part of a network of perceptual and physiological defenses (e.g., changes to olfaction, nausea, vomiting) that support such a function. Participants included 13 pregnant women and 18 non-pregnant women. Pregnant women scored significantly higher than non-pregnant controls on the Farnsworth-Munsell (FM) 100 Hue Test, an objective test of color discrimination, although no difference was found between groups in preferences for food images at different stages of ripeness or spoilage. These results are the first indication that changes to color discrimination may occur during early pregnancy, and is consistent with the view that pregnancy sickness may function as an adaptive defense mechanism.
Authors:
Levente L Orbán; Farhad N Dastur
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Publication Detail:
Type:  Journal Article     Date:  2012-05-25
Journal Detail:
Title:  Evolutionary psychology : an international journal of evolutionary approaches to psychology and behavior     Volume:  10     ISSN:  1474-7049     ISO Abbreviation:  Evol Psychol     Publication Date:  2012  
Date Detail:
Created Date:  2012-09-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101219668     Medline TA:  Evol Psychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  238-52     Citation Subset:  IM    
Affiliation:
School of Psychology, University of Ottawa, Ottawa, Canada.
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