Applying a Score Confidence Interval to Aiken's Item Content-Relevance Index

Item content-relevance is an important consideration for researchers when developing scales used to measure psychological constructs. Aiken (1980) proposed a statistic, V, that can be used to summarize item content-relevance ratings obtained from a panel of expert judges. This article proposes the a...

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Bibliographic Details
Published in:Measurement in physical education and exercise science 2004, Vol.8 (4), p.213-225
Main Authors: Penfield, Randall D., Giacobbi, Jr, Peter R.
Format: Article
Language:English
Subjects:
Content Validity
Data Analysis
Evaluation Methods
Intervals
Measures (Individuals)
Physical Education
Science Education
Sport Psychology
True Scores
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Summary:Item content-relevance is an important consideration for researchers when developing scales used to measure psychological constructs. Aiken (1980) proposed a statistic, V, that can be used to summarize item content-relevance ratings obtained from a panel of expert judges. This article proposes the application of the Score confidence interval to Aiken's V statistic to improve the inference of the unknown population value of V. The application of the Score confidence interval to V is described, a numerical example is provided, and a demonstration of the Score confidence interval is presented for ratings obtained in the development of a scale measuring life skills.
ISSN:1091-367X
1532-7841
DOI:10.1207/s15327841mpee0804_3