FACTORIAL “ANALYSIS AND SYNTHESIS” OF THE UCHIDA-KRAEPELIN PSYCHODIAGNOSTIC TEST
BIEN TSUJIOKA, TAKAYOSHI HIGASHIMURA · The Japanese journal of psychology · 1974
A single trait factor, Calculation Speed, and five state factors, General Energy Level, Fatigue, Excitation, Rhythm and Volitional Tention, are extracted from a (30×30) correlation matrix obtained from a 30-minute performance of simple additions of two single-digit numbers in the Uchida-Kraepelin Psychodiagnostic Test. Factor scores are estimated by the multiple regression method and thirty error factors are calculated by substituting them into the formula of the factor analytic model. The distributions of common and error factor scores are completely normal with the zero mean and the unit variance in each. Discrepancies between the observed and synthetic data are found to be very small. A computer program in Fortran language is also prepared as an objective evaluation of the Uchida-Kraepelin Test.