The MCMI-III personality disorders scores predicted by the NEO-FFI-R and the ZKPQ-50-CC: a comparative study

This study was designed to compare the NEO-FFI-R versus the ZKPQ-50-CC in their relationships with the fourteen MCMI-III personality disorder scales in a Spanish non-clinical sample (N = 674). Previous studies showed consistent relationships between the Five Factor Model and the DSM-IV personality disorders (PD), but there is no comparative study between both Five Factor and Zuckerman's personality models. The aim was to replicate previous results about relationships between the Big-Five and PDs using the revised short version of the NEO-PI-R, and to compare the NEO-FFI-R versus the ZKPQ-50-CC regarding the relationships with MCMI-III personality disorder scales. Results showed no sharp differences between the NEO-FFI-R and ZKPQ-50-CC scales. Each instrument explained around 30% of the PDs MCMI-III scales variance. Using conjointly the 10 personality scales from the NEO-FFI-R and ZKPQ-50-CC, the PDs accounted variance rose to 38%. Differences and similarities between both short personality questionnaires are discussed.