Item Intercorrelations, Item-Test Correlations, and Test Reliability
- 1 July 1980
- journal article
- research article
- Published by SAGE Publications in Educational and Psychological Measurement
- Vol. 40 (2) , 353-355
- https://doi.org/10.1177/001316448004000211
Abstract
An alternative derivation was given of Gaylord's formulas showing the relationships among the average item intercorrelation, the average item-test correlation, and test reliability. Certain parallels were also noted in analysis of variance and principal component analysis.Keywords
This publication has 4 references indexed in Scilit:
- Estimating Test Reliability from the Item-Test CorrelationsEducational and Psychological Measurement, 1969
- A Measure of the Average IntercorrelationEducational and Psychological Measurement, 1968
- Reliability and behavior domain validity: Reformulation and historical critique.Psychological Bulletin, 1957
- Test Reliability Estimated by Analysis of VariancePsychometrika, 1941