Correlation of some psychological and educational measurements : with special attention to the measurement of mental ability / by William Anderson McCall.

  • William Anderson McCall
Date:
1916
Catalogue details

Licence: In copyright

Credit: Correlation of some psychological and educational measurements : with special attention to the measurement of mental ability / by William Anderson McCall. Source: Wellcome Collection.

    20/100 (page 12)
    Using this per cent, the score which would probably have been made on the day when the individual was absent, was calculated from the last score made before or the first score made after the absence. Table B gives the raw arrays for all the tests used for the entire eighty-eight subjects. By eliminating the individuals who were absent on single-test days and also those who were absent more than two odd or two even days for any one practice test, the eighty-eight subjects were reduced to sixty-three sub- jects. When the two or less absent days were filled in with the probable scores, Table C resulted. Let us call Table C the ‘corrected arrays.’ In closing this discussion one further remark is necessary. The original intention was to use more special tests than are shown in Table B. While these were dropped later,,they figured in the elimination of pupils. Still another fact must be noticed. The teachers, who gave their opinion of the children’s mental ability, ranked them in order from one to eighty-eight. When many individuals were eliminated gaps occurred in their ranks. It was decided to close up these gaps and make the range from one to sixty-three. TABLE B Raw Arrays: Scores or average scores made by 88 children in the tests shown at the top of each column. Under the practice tests: Column I = average from odd days; column 2 = average from even days; figure to left of a parenthesis = total score from number of tests shown in the parenthesis. Ind. Addition Cancelling 2 Cancelling 3 10 tests 10 tests 8 tests 8 tests 8 tests 8 tests 1 2 1 2 1 2 1 102.7 105.7 138.0 142.0 153.5 160.0 2 38.3 356.0[9] 92.3 696.0[7] 111.5 804.0[7] 3 aud 71.9 98.8 105.5 Lies 119.5 4 36.0 38.7 87.3 91.8 103.5 106.1 5 261.0[9] 268.0[8] 720.0[7] 724.0[7] 120.8 897.0[7] 6 348.0[9] 356.0[9] 134.0[1) 7 42. 45. 580.0[7] 92.0 105.0 8 30.0 264.0[8] 80.3 54.2[6] 102.3 696.0[6] 9 56.5 58. 132.0 133.3 10 9.8 12.0 70.0 74.0 92.0 4.8 11 18. 98.5 111.8 840.0[7] 864.0[7] 12 120.0[6] 125.0[6] 662.0[6] 692.0[6] 814.0[6] 814.0[6] 13 130. 138 157.5 2.9 14 71.4 76.4 113.8 119.0 121.8 120.5 15 27.8 31.8 105.3 106.0 138.0 132.0 16 47.0 9.8 752.0[7] 115.0 125.8 878.0[7] 17 28.3 266.0[9] 0 728.0[7] 115.5 822.0[7] 18 61.4 4.6 87.5 96.5 103.8 105.5 19 80.7 84.7 93.5 94.0 101.5 748.0[7] 20 57.6 63.3 106.3 123.5 23.5 26.5 111.8 ; 125. 22 268.019] 315.0[9] 682.0[7] 650.0[7] 744.0[7] 747.0[7]