Many studies find a relationship between subjective well-being and higher income. Money, by itself, does not bring happiness, but it allows us to do things that make us feel better.

One of the ways to achieve this, for both rich and poor, is to spend money on other people. Economist Richard Easterlin suggests that, once basic needs are met, increasing income does not necessarily increaseWell-being. The relationship between money and happiness is even more complex than previously thought, writes Andrew Keen.