Link between income and happiness is mainly an illusion

While most people believe that having more income would make them happier, Princeton University researchers have found that the link is greatly exaggerated and mostly an illusion.

"The belief that high income is associated with good mood is widespread but mostly illusory," the researchers wrote. "People with above-average income are relatively satisfied with their lives but are barely happier than others in moment-to-moment experience, tend to be more tense, and do not spend more time in particularly enjoyable activities."

The Princeton researchers collaborated with psychologists David Schkade of the University of California-San Diego, Norbert Schwarz of the University of Michigan and Arthur Stone of the State University of New York-Stony Brook.

The researchers have developed a tool to measure people's quality of daily life known as the Day Reconstruction Method (DRM), which creates an "enjoyment scale" by requiring people to record the previous day's activities in a short diary form and describe their feelings about the experiences. Their 2004 study using this method, which surveyed 909 employed women in Texas, provided evidence that higher income played a relatively small role in people's daily happiness.

For the new study, the researchers examined data from the 2004 survey to illustrate misperceptions that more money buys more happiness. Their experiment extended previous studies in which people have exhibited a "focusing illusion" when asked about certain factors contributing to their happiness -- attributing a greater importance to that factor once it has been brought to mind. For example, when people were asked to describe their general happiness and then asked how many dates they had in the past month, their answers showed little correlation. But when the order of the questions was reversed for another group, the link between their love lives and general happiness became much greater.

To test whether this illusion applied to income, Krueger, Kahneman and their colleagues studied the responses given by the women in the 2004 DRM survey. After they were asked to report the percentage of time they spent in a bad mood the previous day, they were asked to predict how much time people with certain income levels spend in a bad mood.

Survey respondents expected women who earned less than $20,000 a year to spend 32 percent more of their time in a bad mood than they expected people who earned more than $100,000 a year to spend in a bad mood. In actuality, respondents who earned less than $20,000 a year reported spending only 12 percent more of their time in a bad mood than those who earned more than $100,000. So the effect of income on mood was vastly exaggerated.

To provide further evidence on the role that income plays in people's lives, the researchers conducted an additional DRM survey of 810 women in Ohio in May 2005. In this survey, respondents reported their experiences from moment to moment as well as their annual household income and overall life satisfaction. The new survey found that income was more weakly correlated with individuals' happiness from moment to moment than it was with their overall life satisfaction.

"If people have high income, they think they should be satisfied and reflect that in their answers," Krueger said. "Income, however, matters very little for moment-to-moment experience."

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