Antisocial and Schizoid Personality Disorder Scales: Conceptual bases and preliminary findings

Abstract

The study describes the development and validation of two scales which can be used in evaluating schizoid and antisocial personality disorders. Both scales were developed relying on descriptions from DSM 5 and ICD 10. For validation, the scales have been tested on 125 subjects, together with two well-known psychometric instruments, DA 12profile Personality Inventory, and SCL-90. Internal consistency is calculated using Cronbach's alpha coefficient. Schizoid Scale contains 20 items and shows a good internal consistency (Cronbach's α = .77) and Antisocial Scale contains 22 items and has excellent internal consistency (Cronbach's α = .91). The correlations between the scores of the two scales and the scores of DA 12profile Personality Inventory and SCL-90 are statistically significant. The factorial analysis reveals that the two scales and DA 12profile Personality Inventory sub-scales are clustered in four factors, explaining 68.31 % of the variance. Based on these results, we discussed the importance the scales have for psychological research and for psycho-diagnostic, their limitations and our future directions of research.