Evaluating new supplemental indicators for the Personality Assessment Inventory: Standardization and cross-validation.

As the research literature on the Personality Assessment Inventory (PAI; Morey, 1991) has expanded, several supplemental indicators have been introduced to aid in the interpretation of PAI results for the purpose of addressing particular assessment questions, such as protocol validity or treatment-related considerations. However, many of these indicators have remained largely unexamined beyond the initial validation studies in which they were derived. The purpose of the present study was to provide normative data for these new supplemental indicators, as well as to cross-validate these indicators in other existing PAI data sets and provide information about incremental validity beyond existing PAI scales and indices. Comparison effect sizes indicated that nearly all of the new supplemental indicators discriminated as intended, with the majority of indicators also contributing significantly beyond existing PAI indicators. These results suggest that some of these supplemental indicators may prove to be useful additions to the standard scoring of the PAI. (PsycINFO Database Record (c) 2018 APA, all rights reserved).