Studies show that about 1% of the population display the characteristics of a psychopath, but if you believe television, you already know everyone even slightly weird is a potential major psycho. There are shows about psychopaths who hunt psychopaths, so obviously they must be absolutely everywhere. Maybe you’ve even worked for or dated one! But how can we be sure? The term “psychopath” was first used in 1847, and its meaning has evolved somewhat over the years since – as have testing methods. British author Julian Rothenstein has compiled many of them in Psychobook: Games, Tests, Questionnaires, Histories – a fascinating, fun new title from Princeton Architectural Press which looks at classic testing methods, from word-association games to inkblots to personality tests. Interestingly, it also presents some brand new reimagined tests created by contemporary artists and writers. Whip it out at your next social gathering for a good time! You know you want to give your friends an Ego Health Checkup.