Psychologists have always shone a torch, and often a spotlight, into many dark corners of the human mind. They study everything, from art preferences to altruism, coaching to criminality, jokes and humour to justice and honesty, as well as sex differences, schizophrenia and sociopathy. Psychology can offer clear descriptions and explanations for all sort of phenomena. More importantly, psychological research can improve lives in a multitude of ways; many applied psychologists – e.g. clinical, educational, counselling and work psychologists – have the primary aim of making people more happy and better able to identify and realise their full potential. ‘Psychology 101’ offers bite-size articles of psychological science from Adrian Furnham, a seasoned psychologist with a broad range of expertise.