CIO inventory: A new tool for measuring personality traits common to psychopathy and narcissism and their interaction with gender

International Journal of Law and Psychiatry
Luciana CarraroAlessandro Angrilli

Abstract

A lack of empathy, interpersonal dominance, aggression and the exploitation of others are the key features of both narcissism and psychopathic disorders. With the aim to better capture the shared facets of these traits, this study developed a new tool named the Capability to Influence Others (CIO) Inventory, which is based on the pleasantness evaluation of ten items-verbs presented in the infinitive form. The inventory, characterized by very quick submission, was administered to 67 males and 100 females and was correlated with the concurrent Narcissistic Personality Inventory (NPI) and Levenson Self-Report Psychopathy Scale (LSRP). An exploratory factor analysis supported the presence of only one factor in both the male and female groups. Internal consistency of the CIO was very good for both men (Cronbach's alpha = 0.85; 95% CIs: 0.80-0.90) and women (Cronbach's alpha = 0.83; 95% CIs: 0.77-0.87). Further statistics showed a high correlation between the CIO and the LSRP-F1 (primary psychopathy) in both genders (r > 0.47). Clear gender differences were found in the correlation between the CIO and the NPI: the correlation was high (r = 0.58) in males and absent in females. The CIO may represent a quick and low demanding tool for ...Continue Reading

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