The Orthogonality of Psychoticism and Neuroticism: A Factorial Study

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Abstract
Questionnaire scales for the measurement of psychoticism, neuroticism, extraversion and dissimulation (“Lie scale”) were administered to 216 boys and 224 girls 11 and 12 yr. old; all 111 items of the questionnaire were intercorrelated and factor analyzed separately for the two sexes. Four main factors emerged, as expected, with the 3 personality factors (P, E, and N) almost entirely independent of each other. Scales of 20 items were made up to measure each of these factors, as well as L, and the scores on these scales were again largely independent of each other, with the exception of the L scale. The interpretation of these results is discussed.

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