“Perrotta Border-bipolar Profile Diagnostic Questionnaire” (PBBD-Q): Development, Regulation, and Validation of a Psychometric Instrument for the Unified Diagnosis of the Psychopathological Condition in Adults

Giulio Perrotta* and Stefano Eleuteri

Introduction: In the literature, the high risk of diagnostic error in diagnoses of borderline disorder and bipolar disorder, due to overlapping part of symptoms, is well known. There is a need to validate a psychometric instrument capable of reducing this risk. 

Materials and methods: A theory, model, scale and questionnaire related to the unified diagnosis of Border-Bipolar psychopathological condition (Perrotta Border-Bipolar Profile Diagnostic Questionnaire, PBBD-Q) was generated to be administered to a selected population; however, since there is no psychometric instrument capable of performing this analysis, the data were compared with the outcomes of the PICI-3-TA columns related to the disorders under investigation, to validate the proposed psychometric instrument. 

Results: In this study, a population of 232 individuals (96 males and 136 females), aged between 18 and 68 years (M: 39.4; SD: 3.1), was selected. KMO and EFA all show values above 0.500, which is still considered adequate. Statistical comparison between PBBD-Q and PICI-3-TA showed good significance (p = 0.017 and W = 0.878), with a fair correlation matrix (r = 0.866). Statistical analysis showed that the psychometric test has a well-defined and stable construct, with the variables well represented and positively correlated with another construct already validated. 

Conclusion: PBBD-Q is a valid, efficient, and effective psychometric tool to identify the exact unitary diagnosis of the Border-Bipolar psychopathological condition.

Keywords:

Published on: Nov 8, 2025 Pages: 32-38

Full Text PDF Full Text HTML DOI: 10.17352/2455-5460.000103
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