The intelligence of the delinquent boy . la. ^5-)9 5(>-«4«-S9 60-*44S*» 70-74 Tf-?? S<Va405-69 90-94 95-79 MO-OOar-o/l-M IS-ff 10» Fig. 4, General distribution of I. by groups of five, for juvenileand adult cases. At the time of this writing there has been occasion to retest 13cases. In these the has been found to be even less variable, onthe whole, than Terman found in his mixed group. The averagedifference in between the first and second tests for our 13 casesis barely 3 per cent. If we omit one case (No. 9 in Table I) in whichtliere is a high probability that the element
The intelligence of the delinquent boy . la. ^5-)9 5(>-«4«-S9 60-*44S*» 70-74 Tf-?? S<Va405-69 90-94 95-79 MO-OOar-o/l-M IS-ff 10» Fig. 4, General distribution of I. by groups of five, for juvenileand adult cases. At the time of this writing there has been occasion to retest 13cases. In these the has been found to be even less variable, onthe whole, than Terman found in his mixed group. The averagedifference in between the first and second tests for our 13 casesis barely 3 per cent. If we omit one case (No. 9 in Table I) in whichtliere is a high probability that the element of coaching may haveaffected the test, the average falls to 2 per cent, the highest differ- 22 The Journal of Delinquency, Monograph No. 1 !2L !£?;:. !»- liJ. © © © ©© © § oO
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