Ioannis Tsaousis

The 5th version of DSM ( American Psychiatric Association, 2013 ) employed a dimensional approach to describe and assess personality disorders, namely, the alternative model of personality disorders (AMPD). So far, AMPD has been translated and validated in many countries. Herein, the results of a series of studies conducted to develop and validate the Greek Personality Psychopathology Inventory (GPPI-5) following the AMPD are reported. Data from more than 1,200 adults were analyzed to examine factor structure. The ESEM approach was applied (1) to examine the proposed personality model, (2) to confirm previous validity studies on AMPD, and (3) to examine the invariance of GPPI-5 across gender. Results successfully replicated the AMPD at both the domain and facet levels. Measurement invariance across gender supported the GPPI-5 structure. Reliability and validity studies were conducted, providing evidence that GPPI-5 is a valid and psychometrically sound measure for assessing personality disorders in clinical and research settings.