About 220, random-sampled, offenders discharged from the Nagoya prison between 1948 and 1949 were followed up until March, 1952 as to their conduct; and tried to evaluate the relative importance of 19 biological and sociological factors.
Out of these offenders 78 violated again after from 26 to 42 months.
It was found with these 78 violators and 192 nonviolators by statistcal test that the following 9 factors were significant on the judgment of social prognosis for offenders:
1) Hereditary disease of kin
2) Family trouble
3) Misconduct before 18 age
4) Serious illness and wound
5) No protector
(Above, less than 1% of the level of significance) -
6) Incomplete compulsory education of parent
7) Prison punishment
8) Psychopathy
9) No occupational aptitude
(Above, less than 5% of the level of significance)
(
Seto Reformatory and Gifu Mental Institution)
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