"Psychopaths: how can you spot one?"

"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 includes: glibness and superficial charm, grandiose sense of self-worth, cunning/manipulative, pathological lying, emotional shallowness, callousness and lack of empathy, a tendency to boredom, impulsivity, criminal versatility, behavioural problems in early life, juvenile delinquency, and promiscuous sexual behaviour. A pure, prototypical psychopath would score 40. A score of 30 or more qualifies for a diagnosis of psychopathy. Hare says: “A friend of mine, a psychiatrist, once said: ‘Bob, when I meet someone who scores 35 or 36, I know these people really are different.’ The ones we consider to be alien are the ones at the upper end.”"

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