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Aspects of a computer���managed test of children's reading vocabulary: Reliability, validity, and characterization of knowledge

Journal Article


Abstract


  • This paper presents a description of the measurement qualities of a computer���managed test of children's reading vocaculary, and the resultant representational patterns of vocabulary knowledge. Students from grades 4, 7, and 10 at three ability levels responded to a sample of 340 words and non���words in terms of whether or not they knew what each word meant (a simple yes/no task). Systematically constructed non���words were included as test items to permit estimation of individual response biases. The test is shown to be generally highly reliable. More importantly, the test is shown to possess two important types of validity: convergent validity, with an interview on representative test items; and known���groups validity, with respect to predicted word knowledge differences across grade and ability levels. A key outcome from this computer���managed test is its comprehensive depiction of the characteristics of a child's vocabulary knowledge across a range of very common words to very rare words. The theoretical prediction of a normal ogive relationship between probability of knowledge and word frequency was strongly confirmed. Using parameters provided by the computer managed test, the total vocabulary sizes of the children are estimated, and these estimates are compared with previous research findings. Finally, some general implications of using such a test in schools as an assessment and diagnostic tool are advanced. �� 1987 Taylor & Francis Group, LLC.

Publication Date


  • 1987

Citation


  • Cooksey, R. W., & Freebody, P. (1987). Aspects of a computer���managed test of children's reading vocabulary: Reliability, validity, and characterization of knowledge. Reading Psychology, 8(2), 103-118. doi:10.1080/0270271870080206

Scopus Eid


  • 2-s2.0-84928462611

Web Of Science Accession Number


Start Page


  • 103

End Page


  • 118

Volume


  • 8

Issue


  • 2

Place Of Publication


Abstract


  • This paper presents a description of the measurement qualities of a computer���managed test of children's reading vocaculary, and the resultant representational patterns of vocabulary knowledge. Students from grades 4, 7, and 10 at three ability levels responded to a sample of 340 words and non���words in terms of whether or not they knew what each word meant (a simple yes/no task). Systematically constructed non���words were included as test items to permit estimation of individual response biases. The test is shown to be generally highly reliable. More importantly, the test is shown to possess two important types of validity: convergent validity, with an interview on representative test items; and known���groups validity, with respect to predicted word knowledge differences across grade and ability levels. A key outcome from this computer���managed test is its comprehensive depiction of the characteristics of a child's vocabulary knowledge across a range of very common words to very rare words. The theoretical prediction of a normal ogive relationship between probability of knowledge and word frequency was strongly confirmed. Using parameters provided by the computer managed test, the total vocabulary sizes of the children are estimated, and these estimates are compared with previous research findings. Finally, some general implications of using such a test in schools as an assessment and diagnostic tool are advanced. �� 1987 Taylor & Francis Group, LLC.

Publication Date


  • 1987

Citation


  • Cooksey, R. W., & Freebody, P. (1987). Aspects of a computer���managed test of children's reading vocabulary: Reliability, validity, and characterization of knowledge. Reading Psychology, 8(2), 103-118. doi:10.1080/0270271870080206

Scopus Eid


  • 2-s2.0-84928462611

Web Of Science Accession Number


Start Page


  • 103

End Page


  • 118

Volume


  • 8

Issue


  • 2

Place Of Publication