Night owls are quite different from morning larks. Morning people are more punctual, perform better in school, and have higher success in the corporate world. Evening people are more risk-taking, creative, extraverted and have higher alcohol and nicotine consumption. They also have laxer moral standards, and an increased desire for casual sex. Indeed, my colleagues and I suspected that the characteristics of people who habitually lurk in the shadows of the darkness could have a relationship with the ‘Dark Triad’ of personality: Machiavellianism, psychopathy and narcissism.
Source: Minna Lyons, Sex, drugs and late nights: on night owls and psychopaths | Aeon Ideas