The'factorial analysis of Uchida-Kraepelin paychodiagnostic test in normal and delinquent boys and girls

Abstract

The present study was so designed as to compare scores of the measures of the Uchida-Kraepelin Psychodiagnotic Test such as type of work curve, amount of performance before the resting (A) and after the resting (B), error rate (A & B), firsttension (A & B), last-tension (A & B), the largest difference of performance (A & B), fluctuation rate of performance (A & B), and rate of the resting effect, IQ, in high school students (H), and delinquent boys and girls (D), both aged about 16.
Then the structure of factors based on correlation coefficients of these scores in H was compared with that in D.
The results were as follows:
1) D was statistically inferior to H in mean scores of IQ, type of work curve, amount of performance (A & B), the largest difference of performance (A), fluctuation rate of performance (A & B), and it was surprising that error rate was smaller in D than in H.
2) Four factors were extracted and rotated in H and D respectively. In H they are tentatively named as Good-bad of performance, Process of performance Before-after the resting about process of performance, and unnamed factor, and in D as Good-bad of performance, Exessive carefulness, Process of performance, and unnamed factor, It seemed that the small error rate in D was attributed to Excessive carefulness factor which was very characteristic in D.
3) Good-bad of performance and process of performance factors were common to normal, schizophrenic and delinquent subjects, so these factors might be fundamental for the Uchida-Kraepelin Psychodiagnostic test, and the fluctuation of performance particularly differed in different subject groups in the meaning as measure.