Word: grouped
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Dates: during 1950-1959
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...first problem faced by the Gluecks after setting up this predictive table was to encourage its application to juvenile delinquents with backgrounds differing from those who made up the original group. If offenders had the same "cluster of factors" as were found among the SPT delinquents, the test would be validated. The process was then to be reversed--the test applied to six year olds to see if predictions of delinquency actually came true...
...table was applied to a group of 100 Jewish boys confined in the Hawthorne-Cedar Knolls School in New York State, with the purpose of determining the extent to which it would have been possible, years earlier, to have identified them accurately as potentially serious delinquents. Black and Mis Glick ascertained that 91 per cent of the group would have been correctly spotted by the test...
...which he submitted as his Senior Honors thesis in the Department of Social Relations. Thompson established the SPT as a valid instrument for distinguishing among children already showing behavioral difficulties, those who are true delinquents from those whose maladapted behavior is temporary. The SPT showed that among a representative group of 100 boys, included originally in a research project called the Cambridge-Somerville Youth Study, it would again have been possible to identify accurately 91 per cent of all the boys as either potential delinquents or as non-delinquents...
...this inquiry, again the table revealed its value for boys of status and background different from that of the original test group. The Cambridge-Somerville Study included boys of higher intelligence, of better economic status, and of better home neighborhoods than those in the Unraveling Juvenile Delinquency study...
Still another check on the SPT was published in April, 1955, by the Jersey Department of Institutions and Agencies in which the table was applied to 51 delinquent boys who were on parole. The group reports that "the closeness of our findings with the original findings in the study of Unraveling Juvenile Delinquency is rather noteworthy, since the New Jersey boys were selected at random, and no attempt was made to match the individual characteristic of these delinquent boys with those included in the Harvard Law School study...