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Logo of agpsychBioMed Centralbiomed central web sitesearchsubmit a manuscriptregisterthis articleAnnals of General Psychiatry
Ann Gen Psychiatry. 2010; 9(Suppl 1): S140.
Published online 2010 April 22. doi:  10.1186/1744-859X-9-S1-S140
PMCID: PMC2991826

Cluster 'A' in personality disorders category - development and perspective


With the development of psychiatric science the group of Personality Disorders becomes clearly defined and within the various existing classifications a well-defined group stands out, characterized mainly by the cold affect and by the lack of empathy. The historical overview of the Paranoid and the Schizoid Personality Disorders reveals extremely high historical (temporal) stability of their diagnostic criteria. This stability and endurance of the Cluster A raises the question of its' potential freedom from historical and/or cultural contextual effects.

Materials and methods

42 male psychiatric patients, aged 18 to 25, diagnosed with Personality Disorder and Adjustment Disorder, were examined for this study. The participants were evaluated with psychiatric clinical interviews, as well as with semi-structured interview for assessment of personality disorders - International Personality Disorders Examination (IPDE).


The current research confirmed the initial hypothesis that the reliability of the diagnostics criteria for the Cluster A is high, as is the validity of the diagnosis itself. Despite the fact that the sample group was ethnically diverse, the Bulgarian variation of the method did not reveal specific cross-cultural differences between participants from different backgrounds.


The criteria for Cluster A, unlike the criteria for the other types of Personality Disorders, were found to be cultural and historically insensitive.


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