We've all heard the saying "money can't buy happiness." Previous analysis of 450,000 Gallup poll respondents by Nobel-prize winners Daniel Kahneman of Princeton University and Angus Deaton backed up the notion, concluding that happiness plateaus at the $75,000 USD annual income level. A contrasting study conducted among 33,391 participants by Matthew Killingsworth of the University of Pennsylvania found no such plateau existed and that "higher incomes are associated with both feeling better day-to-day and being more satisfied with life overall." So Kahneman and Killingsworth decided it was time to revisit their clashing conclusions and settle the debate.
