It’s a question that philosophers, economists and social scientists have grappled with for decades: Can money buy happiness?

For most people in the United States, the answer is, seemingly, yes.

Two prominent researchers, Daniel Kahneman and Matthew Killingsworth, came to this conclusion in a joint study published this month in the Proceedings of the National Academy of Sciences, overturning the dominant thinking that people are generally happier as they earn more, with their joy leveling out when their income hits $75,000.

This threshold was initially posited by Kahneman, a Nobel Prize-winning economist and psychologist, in a 2010 study that concluded that “emotional well-being (also) rises with log income, but there is no further progress beyond an annual income of $75,000.”

But in 2021, Killingsworth, a happiness researcher and senior fellow at the University of Pennsylvania’s Wharton School, found that happiness does not plateau after $75,000, and that “experienced well-being” can continue to rise with income well beyond $200,000.

Kahneman and Killingsworth said their latest study was an “adversarial collaboration” where they pitted their theories against each other with the help of an arbiter. The latest research adjusted for inflation, they said.

In their study, Kahneman and Killingsworth surveyed 33,391 adults aged 18 to 65 who live in the United States, are employed and report a household income of least $10,000 a year. The authors said they lacked substantial data for those earning over $500,000.

To measure their happiness, participants were asked to report on their feelings at random intervals in the day via a smartphone app developed by Killingsworth called Track Your Happiness. Killingsworth said in an email that the data came from “repeatedly pinging people at randomly-timed moments during daily life, and asking about their happiness at that moment in real-time.” Specifically, they were asked, “How do you feel right now?” on a scale ranging from “very bad” to “very good,” he said.

The study reached two big conclusions: First, that “happiness continues to rise with income even in the high range of incomes” for the majority of people, showing that for many of us, on average, having more money can make us increasingly happier.

But the study also found that there was an “unhappy minority,” about 20% of participants, “whose unhappiness diminishes with rising income up to a threshold, then shows no further progress.”

These people tend to experience negative “miseries” that typically cannot be alleviated by earning more money; the report cites examples such as heartbreak, bereavement or clinical depression. For them, their “suffering” may diminish as their income rises to about $100,000 but “very little beyond that,” the study said.

“In the simplest terms, this suggests that for most people larger incomes are associated with greater happiness,” Killingsworth said in a statement about the study.

“The exception is people who are financially well-off but unhappy. For instance, if you’re rich and miserable, more money won’t help. For everyone else, more money was associated with higher happiness to somewhat varying degrees.”