Document Detail

Quantification of three-dimensional structures.
MedLine Citation:
PMID:  681889     Owner:  NLM     Status:  MEDLINE    
A mathematical model, based on additive subcomponents of grouping, subitizing and adding, was derived to account for quantification latencies of three-dimensional block arrangements. Subitizing is the process that people use to directly quantify a small number of objects without counting. It was found that most people consistently subitized up to four blocks. With more than four blocks, people resorted to grouping and adding, and the model was able to account for these data. The structural variables of compactness, symmetry, linearity, and planarity were shown to have small effects on quantification latencies relative to the large effect of number of blocks. Of these structural variables, compactness had the largest effect, and in terms of the model, it is suggested that visual structure had its effect on the perceptual grouping subcomponent.
O Akin; W Chase
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  4     ISSN:  0096-1523     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  1978 Aug 
Date Detail:
Created Date:  1978-10-25     Completed Date:  1978-10-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  397-410     Citation Subset:  IM    
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MeSH Terms
Form Perception*
Information Theory
Middle Aged
Models, Psychological
Pattern Recognition, Visual
Space Perception*

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

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