Psychopathy covers a wide range of emotional, interpersonal, and behavioural features, including empathy deficits, callousness, impulsivity, and an overall indifference for the societal norms and the rights of others . It shows a robust association with aggressive behaviour, and its diagnosis is often used as a strong risk factor in predicting general and violent reoffending , even when other factors such as delinquent peers, intelligence, self-control and family background are controlled. Psychopathy is commonly classified as a distinct disorder measured by an overall PCL-R score; yet there is still a debate on whether it is a result of partially independent causal processes or rather it constitutes a coherent syndrome. The aim of this article is thus to set a discussion on this question, providing up-to-date evidences alongside significant pieces of research.