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

Background 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.