﻿Edmondson : Juvenile Delinquency and Adult Crime 77 



large proportion 30 to 40 years of age. The Old Immigration 

 shows the greatest number 20 to 30 years of age with large num- 

 bers on to the forty-fifth year. The New Immigration shows 

 the greatest number of cases 20 to 30 years of age with quite a 

 rapid decline in numbers after the thirty-fourth year. 



This variation in the Xew Immigration cases — the preponder- 

 ance of cases in the age group 20 to 30 years, and the very rapid 

 decline in numbers after the thirty-fourth year — is without doubt 

 due to the fact that by far the greatest number of persons of 

 the Xew Immigration in the general population of the country 

 belong to the age group 16 to 45, the years of the greatest amount 

 of crime. This result is consistent with figures for the United 

 States as a whole where in both major and minor offenses the 

 native whites are older than the foreign born, a fact explained 

 by the age of arrival of the foreign born in this country. 13 



Of the total number of cases of all races or nationalities there 

 is a gradual increase in numbers from the age of 16 up to the 

 highest numbers in the age group 25 to 29 years after which there 

 is a gradual decline to the age of 70 and over. In the United 

 States as a whole the crest of the curve is reached in the years 

 20 to 24. 



A comparison of the age groups of greatest numbers of 

 offenders io this study with those ia studies by Ferrero. Lombroso, 

 and Morrison, and in studies in Austria. France, and England 

 shows that the Gary figures are about midway between the 

 extremes given in other studies. 14 



An examination of these cases arranged according to age 

 groups and sex shows the greatest number of female offenders 

 in the group 16 to 19 years, with almost an equal number 20 to 

 24 years, and a gradual decrease thru the remaining age gro ips 

 to the age of 44 years, when th Q decrease is very rapid. This 

 result is consistent with the conclusion reached by De Quiros 

 that after the age of 46 years females show less criminality. 15 

 In the Gary study the women are ii general younger than the 

 men. 



5. Sex 16 



In this part of the study of crime in Gary, of the total number 

 of offenders, 2.682 are males and 349 females. 



13 Xoren, pp. 49, 51. 



^Ferrero, p. 151: Lombroso (Crime. Its Causes and Remedies), pp. 175, 176; 

 Morrison ( Crime and Its Causes), pp. 160, 161. 

 "De Quiros. 



"Original tables, pp. 91-96. See Preface to this study. 



