Hewitt's Comprehensive Tennis Knowledge Test—Form A and B Revised

Abstract Hewitt's Comprehensive Tennis Knowledge Test, first reported in the Research Quarterly in 1937, has been revised. During the interim over 10,000 copies of Form A and B have been used by members of the profession. There were 200 questions in the original battery. These were reduced to 100 after each of the questions was evaluated by item analysis and Holzinger's Index of Discrimination. The difficulty rating was determined from the percentage answered correctly by three levels of tennis ability—beginners, advanced, and the varsity group. Alternate halves (odd vs. even) for the two forms A and B, when using the Spearman-Brown Prophecy formula, gave a reliability of .95. When correlated with the Minnesota Tennis Knowledge test, r = .81, and with Scott's Achievement Examinations for Elementary and Intermediate Tennis, r = .86; this would indicate sufficient validity. Scoring key and grading scale for each form is included at the end of the paper.