who developed what is considered to be the industry standard for assessing and diagnosing sociopathy
Robert D. Hare
title: Psychopathy text: category of "sociopathic personality" in early editions of the "Diagnostic and Statistical Manual" (DSM) had some key similarities to Cleckley's ideas, though in 1980 when renamed Antisocial Personality Disorder some of the underlying personality assumptions were removed. In 1980, Canadian psychologist Robert D. Hare introduced an alternative measure, the "Psychopathy Checklist" (PCL) based largely on Cleckley's criteria, which was revised in 1991 (PCL-R), and is the most widely used measure of psychopathy. There are also several self-report tests, with the Psychopathic Personality Inventory (PPI) used more often among these in contemporary adult research. Famous individuals have sometimes been diagnosed, albeit title: Psychopathy text: Psychopathy Psychopathy is traditionally a personality disorder characterised by persistent antisocial behaviour, impaired empathy and remorse, and bold, disinhibited, and egotistical traits. It is sometimes considered synonymous with sociopathy. Different conceptions of psychopathy have been used throughout history that are only partly overlapping and may sometimes be 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 title: Psychopathy text: there is no proof he could not learn from mistakes. Psychopathy Psychopathy is traditionally a personality disorder characterised by persistent antisocial behaviour, impaired empathy and remorse, and bold, disinhibited, and egotistical traits. It is sometimes considered synonymous with sociopathy. Different conceptions of psychopathy have been used throughout history that are only partly overlapping and may sometimes be 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 title: History of psychopathy text: who violated legal or moral expectations or was considered inherently socially undesirable in some way. The term sociopathy was popularized from 1929/30 by an American psychologist, originally intended as an alternative term to indicate that the defining feature was a pervasive failure to adhere to societal norms in a way that could harm others. The term psychopathy also gradually narrowed to the latter sense, based on interpretations of the work of a Scottish psychiatrist and especially checklists popularized by an American psychiatrist and later a Canadian psychologist. Psychopathy became defined in these quarters as a constellation of personality traits allegedly title: History of psychopathy text: used too widely and loosely. Robert D. Hare had published a book in 1970 summarizing research on psychopathy, and was subsequently at the forefront of psychopathy research. Frustrated by a lack of agreed definitions or rating systems for psychopathy, including at a ten-day international North Atlantic Treaty Organization (NATO) conference in 1975, Hare began developing a Psychopathy Checklist. Produced for initial circulation in 1980, it was based largely on the list of traits advanced by Cleckley and partly on the theories of other authors and on his own experiences with clients in prisons. Meanwhile, a DSM-III task force instead developed