ABILITIES BY BENJAMIN R. SIMPSON, PH.D. TEACHERS COLLEGE, COLUMBIA UNIVERSITY PUBLISHED BY Teachers College, Columbia University NEW YORK CITY 1912 2. Instructions given in each variety of test. 3. Individual differences in ability to interpret instructions V. RELIABILITY OF THE MEASURES SECURED BY USE OF THE TESTS 4. Order in which abilities correlate with other abilities 5. Analysis of the individual differences revealed by the 67 VII. COMPARISON OF RESULTS WITH THOSE OF OTHER INVESTI- Wissler, Aikens and Thorndike, Norsworthy, Terman, LIST OF TABLES PAGE Ia, Ib,.... In. Original Scores Awarded.... II. III. Rank of Subjects in the Different Tests.. IV. Illustration of the Methods of Treating Correlation Data.. Va. Deviations from the Median of the Good and Poor Subjects Combined Total Scores Awarded and Scores in First and Second 19-29 30-33. 34 36 Vb. Deviations from the Median of the Good Subjects only... VII. Reliability of the Tests 42 VIII. Extent to which the Poor Group Overlaps the Good Group 52 56 X. Pearson Coefficient of Correlation, Corrected for Attenu ation XI, XII and XIII. Pearson Coefficients of Correlation Used in Correcting Raw Coefficients.. 58 59-61 XIV. Deviation Measures Inferred from Per Cents of Judg ments of Superior........... 63 XV. Ranks of Good Group for Estimated Intelligence.... 72 |