Assessing Old Order Amish outpatients with the MCMI-III

In this study, we examined Millon Clinical Multiaxial Inventory-III (MCMI-III; Millon, 2009) characteristics in an Old Order Amish outpatient sample (n = 166), with a comparison group of Old Order Amish who were not receiving mental health treatment at the time of testing (n = 80). We also graphically compared the 2 Amish groups to a non-Amish psychiatric sample in the literature. Consistent with our hypotheses, the Old Order Amish outpatients scored significantly higher than the Old Order Amish comparison group on the majority of MCMI-III scales, with mostly medium effect sizes, suggesting that the MCMI-III is a useful personality instrument in discriminating between Old Order Amish clinical and nonclinical groups. In addition, the Amish outpatients scored similar to a non-Amish psychiatric sample in the literature on most personality scales. Future MCMI-III studies with the Amish are needed to replicate and generalize our findings.