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    A Metric for Orthographic Similarity: Theory and Implications

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    Author
    Gorbunova, Anastasia A.
    Issue Date
    2007
    Keywords
    visual word recognition
    masked priming
    lexical decision
    transposition letter priming
    Advisor
    Forster, Kenneth I.
    Committee Chair
    Forster, Kenneth I.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Letter position plays an important role in lexical access. But are some positions more important than the others? Findings from numerous studies support the notion that in lexical access, initial letters produce strongest activation, which weakens towards the end of the word. In order to create a metric for computing the activation produced by each letter position in a correctly spelled word versus a word in which some or all letters are transposed, the formula for calculating a word's orthographic match coefficient (OMC) was developed and tested. Utilizing the masked priming paradigm and a lexical decision task, Experiments 1-5 test the accuracy and reliability of the OMC predictions, and look at neighborhood density in conjunction with different types of letter movement. Results from these experiments provide empirical support for the OMC as a reliable predictor of priming that involves transposed letters, and offer insight into possible mechanisms of word recognition.
    Type
    text
    Electronic Thesis
    Degree Name
    MA
    Degree Level
    masters
    Degree Program
    Psychology
    Graduate College
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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