A researcher says having a lot of money makes you bad. Professor Paul Piff spent ten years looking at the personalities of rich people. He found their behaviour was very different to poor people's behaviour. Dr Piff said rich people break rules, do not follow the law, and do not care about others. He also said wealthy people cheat more at games and are less likely to help others. Professor Piff told the BBC that wealth makes you think more about your own interests, desires and welfare. They think their own goals and needs are the most important things in life.

The professor also said poorer people are more generous than rich people. They give a higher percentage of their money to help others, usually one-and-a-half times as much as richer people. He said that the wealthier people are, the less generous they are. However, he also said rich people could change and become nicer and more generous. He said rich people can help others more if they know that giving and helping is a good thing. The professor said when rich people know the benefits of giving to others, they can be just as giving as poor people.