Refining the antisocial subscale of the dimensional clinical personality inventory 2: Failed improvements or did we reach the mountain top

Abstract We aimed to refine the previously proposed antisocial subscale for the Dimensional Clinical Personality Inventory 2 (IDCP-ASPD). The sample involved 628 Brazilian adults between 18 and 81 years old. We administered the revised ASPD subscale (IDCP-ASPD-R), the Affective and Cognitive Measure of Empathy (ACME), the Crime and Analogous Behavior Scale (CAB), and the Levenson Self-Report Psychopathy (LSRP). We confirmed the 3-factors structure for the IDCP-ASPD-R. The IDCP-ASPD-R and its former version presented a good capacity to distinguish the groups, with the largest effect size for the Affective factor (IDCP-ASPD-R). Although the IDCP-ASPD-R has shown good performance, we have observed only a slight increase over the previous version of the scale. Therefore, we can only expect a small higher contribution of IDCP-ASPD-R in its practical application to group discrimination. However, from a theoretical perspective, the IDCP-ASPD-R overrides its former version.