A Tentative Study on the Neurophysio-Psychological Correlation

Multivariate Analysis of Personality Traits and Eelectroencephalographic al Findings

Abstract

1,059 delinquent auto-drivers were studied with electroencephalograph, psychological test and simulated driving system, and their results were rated 1 through 5 for the purpose of analyzing possible relationships between any two parameters in the aid of multivariate analytic treatments such as simple correlation coefficient matrix, principal component analysis and factor analysis using Varimax rotation. In the correlation matrices, there were significantly high positive correlation between “exactness of motion” or “emotional stability” and “driving technique”, and between “psychic activeness” and “impulse controllability”. In the principal component and factor analyses, EEG was almost independent from every psychological parameters, while “age” and “driving technique” were also independent from EEG and psychological traits. The psychological parameters are devided into three factor groups; emotional factor, intellectual factor and psychomotor factor. The factor loadings of psychological and the other parameters were not correlated with EEG abnormality, so that it appears rather important whether EEG abnormality is absent or not, as there seems to be not only quantitative but also qualitative difference between “Normal EEG” group and “Problem EEG” group. What the autors have confirmed the independency of examination results suggests a usefulness of this kind of examination battery in subjects whom the authors employed in the present study.