We think of psychopaths as killers – alien – outside society.
But says the scientist who has spent his life studying them you could have one for a colleague – a friend – or a spouse.
At heart – Hare’s test is simple: a list of 20 criteria – each given a score of 0 (if it doesn’t apply to the person) – 1 (if it partially applies) or 2 (if it fully applies).
The list in full is: glibness and superficial charm – grandiose sense of self-worth – pathological lying – cunning/manipulative – lack of remorse – emotional shallowness – callousness and lack of empathy – unwillingness to accept responsibility for actions – a tendency to boredom – a parasitic lifestyle – a lack of realistic long-term goals – impulsivity – irresponsibility – lack of behavioural control – behavioural problems in early life – juvenile delinquency – criminal versatility – a history of ‘revocation of conditional release’ (ie broken parole) – multiple marriages and promiscuous sexual behaviour.
A pure prototypical psychopath would score 40.
A score of 30 or more qualifies for a diagnosis of psychopathy.