Simplex Structure in the Grading of Essay Tests 1

College Entrance Examination Board. Forty-Seventh Annual Report of the Director. New York: Author, 1947. Pp. 23–24.

Diederich P. B. French J. W. Carlton Sydell T. , Factors in the Judgments of Writing Ability. Research Bulletin 61–15. Princeton: Educational Testing Service, 1961. (Multilithed Report)

Godshalk Fred Swineford Frances Coffman W. E. The Measurement of Writing Ability, Research Monograph No. 6. New York: College Entrance Examination Board, 1966.

Guttman L. “A New Approach to Factor Analysis: the Radex. In Lazarsfeld P. F. (Ed.), Mathematical Thinking in the Social Sciences. Glencoe, Illinois: Free Press, 1954.

Hays W. L. Statistics for Psychologists. New York: Holt, Rinehart and Winston, 1963.

Noyes E. S. Essay and Objective Tests in English. College Board Review, Winter 1963, No. 49.

Schumann D. E. W. Bradley R. A. “The Comparison of the Sensitivities of Similar Experiments: Theory. Annals of Mathematics and Statistics, XXVIII (1957), 902–920.

Tucker L. R. Coffman W. E. A Factor Analytic Study of Judged Relevance of Test Items. Research Memorandum 59–11. Princeton: Educational Testing Service, 1959. (Multilithed Report)

Winer B. J. Statistical Principles in Experimental Design. New York: McGraw-Hill, 1962.