Mental aspects of delinquency / by Truman Lee Kelley.

  • Truman Lee Kelley
Date:
[1917]
Catalogue details

Licence: Public Domain Mark

Credit: Mental aspects of delinquency / by Truman Lee Kelley. Source: Wellcome Collection.

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    Further Cor- Resulting rection Dueto Equivalent Omission of Developmental Thorndike Test Questions Age for Each Sa ao TUAW pyc eee Cortgdelon eg a) cote EP MP er ee YN ete eS a hale 1.6 Pps. 13.8 08 ir TAR Oe ta aire (ih ene SRO 1.8 1.2 14.6 1 i) Ae RS RN MEU Se NR oe 2.0 2.0 15.8 LO aah eden wien a ehar es Developmental Age =Chronological Age if over 16; otherwise it equals 16. Since in the present testing there was no opportunity to compensate for failures in Binet group 11 or 12 by successes in group 15 or adult, the Thorndike corrections are not suffi- cient, being based upon results where, in general, tests for the advanced years were given. The amount of this additional correction could be determined experimentally by examining a large number of normal children, but it has here been esti- mated by the writer, as shown in column 3. A perfect score, i. e., the passing of all the tests and scoring a Binet age 12, cannot be evidence of retardation, no matter what the age of the individual; so that the chronological age is assigned to indi- © viduals making that score, even tho their age lies up to 20 or 21. The use of the Stanford revision of the Binet Scale, which is standardized for these higher ages, would be a more accurate means of procedure, but it was not available at the time the testing was done. | Constructive Ability Test: This test (71) consists of a cer- tain definite amount of building block material which is given’ to the subject with the instruction to ‘‘build the best thing he can, and whatever he wants to.’* The individual is graded for the persistence with which he adheres to his self-imposed task, for the symmetry of his product, for the nature of his inter- est, and for the general merit of the structure built. This last gerade is secured by comparing the structure with carefully graded stereoscopic photographs of a large number of struc- tures of different types. The merit score is the only one in this test worked up into averages, as it is the only one upon an objective basis. Merit scores are equivalent to mental ages as follows:
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