. Non-verbal intelligence tests for use in China. vidually correlate highly with thefinal criterion but which correlate but little with each other. Thewriter has adopted r = .80 as a standard. It is aimed to discover agroup of test elements from the five scales, which, combined to-gether, will give a correlation above .80 with the final criterion. Scattergrams were prepared charting every single test elementagainst the final criterion, an inspection of which showed the follow-ing to have high correlations. Pressey Primer Scale, test 4 Pintner Non-language Tests, tests 2 and 3 Myers Mental Meas
. Non-verbal intelligence tests for use in China. vidually correlate highly with thefinal criterion but which correlate but little with each other. Thewriter has adopted r = .80 as a standard. It is aimed to discover agroup of test elements from the five scales, which, combined to-gether, will give a correlation above .80 with the final criterion. Scattergrams were prepared charting every single test elementagainst the final criterion, an inspection of which showed the follow-ing to have high correlations. Pressey Primer Scale, test 4 Pintner Non-language Tests, tests 2 and 3 Myers Mental Measure, test 2 Army Beta Examination, tests 4, 5 and 6 Dearborn Group Tests for Intelligence, Series I:General Examination i, test 17General Examination 2, test 4General Examination 3, test i 44 Non- Verbal Intelligence Tests for Use in China After the scattergrams were inspected, the next step was todetermine roughly the correlations of all the tests. The formulaused is Sheppards, r = cos ttL^ where U is the percentage of unlikedsigned pairs,^ and. n = the number of cases / = the number of + + and pairs It = the number of + — pairs d = the number of oo, o+ and o— pairs All the correlations which, by this method, were found to be were computed also by the product-moment method. TableVII shows the results as found. Among these tests, the two types which appear the most promis-ing are the completion tests and learning tests. Other workers inthis field find similar results. Each of these was used by the makersof three of the five scales tried out and was included in their finalforms because of its value as an independent measure of , these two types of tests have been made the core ofthe proposed Chinese scale. The other elements to be chosen shouldnot correlate highly with these two combined, since any other testwhich does correlate highly with them probably measures the sametraits and, consequently, would add little to the measurement. Thelearn
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