Ricerc@Sapienza

Background: Obsessive-Compulsive Disorder is often measured through self-report questionnaires
focused on measuring symptomatology (Y-BOCS, OCI-R, and PI). The scientific literature identifies
the Pt scale as a distinctive marker, but does not report data related to a specific OCD profile of the
MMPI-2 test. Therefore, based on some clinical considerations and preliminary investigations, the
following study aims to identify a specific MMPI-OCD configuration marked by the presence of
significant indicators able to describe its psychological functioning and its key features in cognitive,
emotional and affective terms.
Method: In order to explore the expected relationships, 395 participants were involved (average age:
34.20 years) and evaluated through the MMPI-2 test and the Yale-Brown interview.
Results: MANOVA, Multiple Linear Regression Analysis and Discriminant Function Analysis confirm
that the OCD is marked by the recurrence of three elevated clinical scales (Pt, D, Sc). Hyper-prudential
reasoning and some reasoning bias, typically employed by these subjects, could justify such results.
Conclusions: This specific configuration could therefore support the clinician during the assessment
phases and lead him to identify – as well as differentiate – his characteristics from those of other
psychological disorders, thus stimulating him to deepen during the interpretation of the results.