Marsh says that criminal psychologists tend

Marsh says that criminal psychologists tend to classify people as having psychopathy only when they display violent and extreme behaviour. For her, however, the condition displays itself as a spectrum with other, less dramatic behaviour that can vary from person to person.Psychologists and psychiatrists generally agree that between one and two in every 100 people in the general population meet the criteria for psychopathy, but Marsh claims that as many as 30% of people in the general population display some degree of psychopathic traits. For those who have psychopathy, it can mean they struggle to maintain close friendships and put themselves in risky situations, but the condition also takes its toll on the people around them too.