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The Effects of Training or Practice, or Both, on Scores of CEEB Spatial Relations Test, Form VAC1

Myers, Charles T.
Publication Year:
Report Number:
ETS Research Bulletin
Document Type:
Page Count:
Subject/Key Words:
Military Personnel, Spatial Ability, Spatial Relations Tests, Test Wiseness, Visual Measures


The Department of Military Topography and Graphics (MTG), U.S. Military Academy, West Point, has gathered data on 592 members of the Class of 1953. They have provided scores of these men on five different variables. These variables are: 1) score on Spatial Relations Test, Form VAC1, (SRTVAC1) administered, September, 1949; 2) score on SRTVAC1 administered May, 1950; 3) grades in MTG to September 21, 1949; 4) grades in MTG to December, 1949; and 5) grades in MTG to June, 1950. Performance statistics of the College Board group on the SRTVAC1 are given. Scatter plots were prepared and correlations and regression equations were computed. The results are presented in table form. The retest reliability of this test is .84. The validity of the test for predicting grades in MTG is .65. The second test is measuring something different from the first test. This is shown by the partial correlation coefficient of .23, the correlation of the second test with course grades with the first test partialed out. The standard error of the prediction of grades by either test is about .149 or three quarters of the standard deviation of the grades. (SGK).

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