Relationships between MMPI subscale scores and premature resignations among Southern Baptist foreign missionaries appointed in 1964 were investigated in an effort to develop a predictive model for attrition. Unsuccessful attempts were made at cross-validating the results of a previous related study, and two separate discriminant function analyses were undertaken. The first sorted subjects into three groups, defined by subjects' length of service before resignation. The second classified them according to the reason stated for their termination, if applicable. Both procedures failed to establish a statistically reliable classification system for relating MMPI scores with premature resignations. Although consistent success has been achieved with the MMPI as a screening instrument for psychopathology, it is suggested that the instrument is not adequately sensitive as a screening device for groups lying predominantly within the normal range of variability.