Threshold Fragility in MCMI-IV Base Rate Interpretations: a Retrospective Psychometric Analysis
This retrospective psychometric analysis of 686 MCMI-IV profiles reveals that threshold fragility near clinical cut-offs (BR 75 and BR 85) is a systematic, scale-dependent, and reproducible property of the instrument, suggesting that quantifying proximity to these boundaries could provide a clinically useful layer of uncertainty beyond standard categorical interpretations.