Abstract/Details

Identifying letters


1995 1995

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Abstract (summary)

Letters and words are encountered in everyday life, making text a good stimulus for studying the process of object recognition. This dissertation describes a series of experiments measuring letter identification efficiency, an absolute measure of human performance that can be compared across dissimilar tasks. Efficiency is broadly constant across wide ranges of letter size, duration, contrast, and position on the retina, suggesting that the underlying process of letter identification is quite general. Observers of any age learn to identify letters in new (to them) alphabets quite quickly; their efficiencies approach those of fluent observers within a few thousand trials. Finally, efficiency is highly correlated with alphabet complexity, measured by the ratio of squared letter perimeter to ink area. This result is consistent with a feature-based model of object identification.

Indexing (details)


Subject
Neurology;
Biomedical research;
Psychology;
Experiments
Classification
0317: Neurology
0541: Biomedical research
0623: Psychology
0623: Experiments
Identifier / keyword
Psychology; Applied sciences; Biological sciences; character recognition; object recognition
Title
Identifying letters
Author
Burns, Catherine Watt
Number of pages
66
Publication year
1995
Degree date
1995
School code
0659
Source
DAI-B 57/02, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
University/institution
Syracuse University
University location
United States -- New York
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
9616299
ProQuest document ID
304246981
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304246981
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