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In this volume the author has collected the statistical results of alpha tests applied to convicts in the states of Ohio, Illinois, Indiana, Maryland and New Jersey which he has published in various journals. The results of similar tests among draftees in the army are used for comparison. The analyses deal with white native-born, white foreign-born and negro men, and there are added some studies of women criminals. Relations with geographic distribution, types of crime, recidivism, occupation, age and other factors are considered separately. The general conclusion reached is that the criminal is superior to the draftee in regard to intelligence, which "for the practical purpose of this book is whatever is expressed quantitatively as measured by the alpha test."
The quotation in the last sentence is an indication of the conservatism of the author in dealing with his facts, which constitute a contribution to criminology of great value. Bearing
Criminal Intelligence.. Arch NeurPsych. 1927;18(5):865–866. doi:10.1001/archneurpsyc.1927.02210050199020