90 THE TREND OF THE RACE 



after they have been guilty of more than one offense, show, when 

 tested by the Binet and several other tests, a marked inferiority 

 in mental development. The proportion of feeble-minded was 20 

 per cent, "but probably at least 50 per cent of delinquents are 

 totally incapable of being taught to look after themselves in an 

 environment as unfavorable as the one from which they came." 

 The results of Ordahl's investigation of the cases brought before 

 the Juvenile Court of San Jose, California, reveal the fact that 

 "25 per cent of the criminal dependents, 45 per cent of the 

 minor delinquents, and 75 per cent of the adult delinquents are 

 feeble-minded. If the feeble-minded and borderline group are 

 combined, then 45 per cent of the minor dependents and 60 per 

 cent of the minor delinquents are below average-normal intelli- 

 gence. In both the minor dependent and the minor delinquent 

 group 60 per cent of the parents, so far as data were available, 

 are either alcoholic, immoral, feeble-minded or insane." 



Ordahl's study of 341 delinquent boys of a school at St. 

 Charles, 111., to which boys are committed for various offenses, 

 reveals the existence of nineteen and six-tenths per cent of 

 distinctly feeble-minded cases; 20.8 per cent were of very dull 

 mentality "and many of these would probably prove on further 

 study to be feeble-minded "; 15.5 per cent were borderline cases, 

 the remaining 44.1 per cent, being of normal mentality. J. H. 

 Williams finds that out of 215 boys hi the Whittier State School 

 the distribution of intelligence was as follows: 



Feeble-minded 32 per cent. 



Borderline 21 " " 



Dull Normal 27 " " 



Normal and Superior 20 " " 



Dr. Haines' reports on the intelligence tests of 671 boys from 

 the Ohio Boys Industrial Home, and 329 girls of the Ohio Girls 

 Industrial Home, reveal much the same condition. All the in- 

 mates were tested by both the Binet-Simon and the Yerkes- 

 Bridges Point Scale tests. The proportion graded as feeble- 



