Beaton, A. E.Criterion scaling of questionnaire items for regression analysis. Research Bulletin RB 68-17. Princeton, N. J.: Educational Testing Service, 1968.
2.
Guttmann, L.The quantification of a class of attributes: A theory and method of scale construction. In Paul Horst, The prediction of personal adjustment . New York: Social Science Research Council, 1941.
3.
Hendrickson, G. F.The effect of differential option weighting on multiple-choice objective tests. Report No. 93. Baltimore: The Johns Hopkins University, Center for the Study of Social Organization of Schools, 1971.
4.
Stanley, J. C. and Wang, M. D.Weighting test items and test-item options, an overview of the analytical and empirical literature. EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, 1970, 30 , 21-35 .