The factorial structure of the 16PF and EPQ in Egyptian samples: A preliminary study

Three hundred and sixteen Egyptian undergraduates (164 males and 152 females) completed the 16PF questionnaire (Form A) and the EPQ. The Varimax orthogonal rotation procedure applied to the 16PF revealed two factors, neuroticism (N) and extraversion (E). The rotated Varimax factors of the combined 16PF and EPQ inventories showed three factors, i.e. N and E, in addition to psychoticism (P). Coefficients of factor similarity (CFS) are high between the corresponding extracted factors of N, E and P in the male and female groups. The present results therefore support the second-order, broader factors. They are highly replicable and invariant in the two Egyptian samples studied.