The relations between scores on analogous scales from four personality questionnaires in 50 normal men

This study analyses the relationships between scales from different personality questionnaires. Fifty normal young men answered a short form of The Minnesota Multiphasic Personality Inventory (MiniMult), the Karolinska Scales of Personality (KSP), the Eysenck Personality Inventory (EPI), and the Tridimensional Personality Questionnaire (TPQ). Relationships between these questionnaires were analyzed by Pearson bivariate correlations. These correlations pointed out several common aspects of basic personality dimensions as measured by the EPI or TPQ and confirmed that reliable relationships between similar scales from different personality questionnaires are found even in 50 normal subjects. Canonical correlations with anxiety and aggression factors extracted from the KSP and dimensions from the EPI and the TPQ showed that two basic dimensions, anxiety-neuroticism and aggression-extraversion, were found in all three questionnaires and that they remained independent. These results are in line with the theories considering personality as a paucidimensional process. With few exceptions, the dimensional approaches to personality (EPI, TPQ, KSP) and the clinically oriented categorical one (MiniMult) did not measure common aspects of the normal subjectsʹ personality.