Facilitating Identification of Item BIAS Through Use of Delta Plots
Albert C. Oosterhof, M. Nadir Atash, Karen Lassiter · Educational and Psychological Measurement · 1984
A number of statistical procedures are available for detecting bias in individual test items. A supplementary treatment is proposed which helps identify sources of bias affecting groups of items. Although applicable to other statistical procedures, this treatment is illustrated with the transformed item-difficulty method as applied to an evaluation of a test used to help select applicants to be admitted to an aviation training program.