La psicopatía o personalidad psicopática es un trastorno antisocial de la personalidad.

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Psychopathy (/saɪˈkɒpəθi/), sociopathy (/soʊsiˈɒpəθi/), is traditionally defined as a personality disorder characterized by persistent antisocial behavior, impaired empathy and remorse, and bold, disinhibited, egotistical traits. Different conceptions of psychopathy have been used throughout history that are only partly overlapping and sometimes appear contradictory. Hervey M. Cleckley, an American psychiatrist, influenced the initial diagnostic criteria for antisocial personality reaction/disturbance in the Diagnostic and Statistical Manual of Mental Disorders (DSM), as did American psychologist George E. Partridge. The DSM and International Classification of Diseases (ICD) subsequently introduced the diagnoses of antisocial personality disorder (ASPD) and dissocial personality disorder respectively, stating that these diagnoses have been referred to (or include what is referred to) as psychopathy or sociopathy. Canadian psychologist Robert D. Hare later repopularized the construct of psychopathy in criminology with his Psychopathy Checklist. Although no psychiatric or psychological organization has sanctioned a diagnosis titled "psychopathy", assessments of psychopathic characteristics are widely used in criminal justice settings in some nations, and may have important consequences for individuals. The study of psychopathy is an active field of research, and the term is also used by the general public, in popular press, and in fictional portrayals. While the term is often employed in common usage along with the related but distinct "crazy", "insane" and "mentally ill", criminal psychology researcher Robert Hare stresses that a clear distinction is known among clinicians and researchers between psychopathic and psychotic individuals. Hare claims that psychopaths "are not disoriented or out of touch with reality, nor do they experience the delusions, hallucinations, or intense subjective distress that characterize most other mental disorders. Unlike psychotic individuals, psychopaths are rational and aware of what they are doing and why. Their behavior is the result of choice, freely exercised."

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