A Multimethod Psychometric Approach to Analyse the Profile of Mental Functioning ‒ M Axis of the Psychodynamic Diagnostic Manual, 2nd Edition (Pdm-2): A Focus on Cluster B Personality Disorders.

Alessio Gori, Eleonora Topino, Laura Muzi, Vittorio Lingiardi, Giovanni Stanghellini

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Article in Clinical neuropsychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Alessio GoriDepartment of Health Sciences, University of Florence, Via di San Salvi 12, Pad. 26, 50135 Florence, Italy; alessio.gori@unifi.it (A.G.); giovanni.stanghellini@unifi.it (G.S.).

Eleonora TopinoDepartment of Human Sciences, LUMSA University of Rome, Via della Traspontina 21, 00193 Rome, Italy; e.topino@lumsa.it (E.T.).

Laura MuziDepartment of Philosophy, Social Sciences, Humanities and Education, University of Perugia, Piazza G. Ermini 1, 06123 Perugia, Italy; laura.muzi@unipg.it (L.M.).

Vittorio LingiardiDepartment of Dynamic and Clinical Psychology, and Health Studies, Sapienza University of Rome, Via degli Apuli 1, 00185 Rome, Italy; vittorio.lingiardi@uniroma1.it (V.L.).

Giovanni StanghelliniDepartment of Health Sciences, University of Florence, Via di San Salvi 12, Pad. 26, 50135 Florence, Italy; alessio.gori@unifi.it (A.G.); giovanni.stanghellini@unifi.it (G.S.).

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6 · The paper itself

Abstract

Objective: Within the realm of international diagnostic systems, the Method: A sample of 285 psychotherapists who regularly use the PDM-2 in their professional practice was involved in this research. The collected data were analysed using an integrated approach combining factor and network analyses. Results: The factor analytic approach supported the strong psychometric properties of the M Axis for the 4-factor model. Good indications of internal consistency emerged, along with evidence of both convergent and divergent validity. The network analysis approach suggested that the psychotherapists perceived the capacity for mentalization and reflective functioning as the most influential one within the network of capacities in Cluster B personality disorders. Conclusions: The M Axis emerged as a psychometrically solid assessment measure with strong theoretical and empirical bases, which can provide valuable support for enhancing both research and clinical practice.

Indexed as

factor analysis approachM axismental capacitiesmental functioningnetwork analysis approachpersonality organizationpsychodynamic diagnostic manual

Identifiers

PMID40171124

DOI10.36131/cnfioritieditore20250105

PMCPMC11956885

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