The hypothesis was examined that the negative skew found in most distributions of performance rat ings is a function of the verbal labels used as anchors. When verbal labels quantified on the basis of the range of real-life performance were employed, distri butional parameters (means, skewness) were affected. Typically used sets of labels were shown to be more negative than believed, thus tending to force responses toward the high end of the scale and thereby contrib uting to negative skew.
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References
1.
French-Lazovik, G. (1974). Predictability of students' evaluations of college teachers from component ratings. Journal of Educational Psychology , 66, 373-385.
2.
Guilford, J.P. (1936). Psychometric methods. New York : McGraw-Hill.
3.
Horst, P. (1949). A generalized expression for the reliability of measures. Psychometrika, 14, 21-32.
4.
Lam, T.C.M., & Klockars, A.J. (1982). Anchor point effects on the equivalence of questionnaire items. Journal of Educational Measurements, 19, 317-322.
Osgood, C.E. (1952). The nature and measurement of meaning. Psychological Bulletin,49, 197-237.
7.
Stephenson, W. (1953). The study of behavior: Q-technique and its methodology . Chicago: University of Chicago Press.
8.
Thorndike, E.L., & Lorge, F. (1944). The teacher's word book of 30,000 words. New York: Teachers College, Columbia University .
9.
Wherry, R.J. (1950). Control of bias in rating: Survey of the literature (Tech. Rep. No. DA-49-0853 OSA 69). Washington DC: Department of the Army, Personnel Research Section.