How Much Money Buys Happiness?

One of the findings of happiness studies has long been that being poor is miserable, but once you get out of the bottom fifth or tenth, the relationship between money and income is weak. A new study has found a level beyond which more money does nothing for your mood:

People say money doesn't buy happiness. Except, according to a new study from Princeton University's Woodrow Wilson School, it sort of does — up to about $75,000 a year. The lower a person's annual income falls below that benchmark, the unhappier he or she feels. But no matter how much more than $75,000 people make, they don't report any greater degree of happiness.