Currently it is well established that certain mental disorders increase the risk for violent behaviour. This is in particular true for the Group B of the DSM-IV (2003 Garrido) personality disorders and substance abuse. Would also have to include disorders included in the spectrum of schizophrenia, paranoid and control symptoms in particular, and in general the cognitive style of personality in this relationship - although in smaller measure- paranoid (Nestor, 2002). I refer only to the relationship between the Group (b) and substance abuse and its link with crime and violence. More specifically, within that group B, the antisocial personality disorder and psychopathy (although they are not all interchangeable terms, as we shall see) and its ability to predict such behavior diverted from violence and antisocial behaviour.