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The present study examined four kinds of vocabulary knowledge: Definitional knowledge, using vocabulary in context, relational knowledge, and morphological knowledge. A measure was developed that assessed all four kinds of vocabulary knowledge using the same 23 vocabulary words, which allowed within- and between-word variance to be modeled. Confirmatory factor analysis was used to test three alternative models of vocabulary knowledge: (1) a four-factor model that specified four related yet distinct dimensions of vocabulary knowledge, (2) a two-factor model that considered vocabulary knowledge and morphological knowledge to be two separate but potentially related factors, and (3) a one-factor model in which vocabulary knowledge was unidimensional. These alternative models were examined by modeling both within- and between-word variance. When controlling for extraneous word-level variance, vocabulary knowledge was found to be a relatively unidimensional construct.
Morphological Awareness, Morphological Knowledge, Reading Comprehension, Vocabulary Knowledge, Word Knowledge
Date of Defense
June 11, 2012.
A Thesis submitted to the Department of Psychology in partial fulfillment of the requirements for the degree of Master of Science.
Includes bibliographical references.
Richard K. Wagner, Professor Directing Thesis; Carol Connor, Committee Member; Michael Kaschak, Committee Member.
Florida State University
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