Surprise! Mathematical Model Reveals Unexpected Findings On Happiness

Written by on August 20, 2014 in Sci-Tech, Science with 0 Comments
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Meeri Kim | The Guardian

Happy Kid

A study shows that we’ll be happier if something was ­unexpectedly satisfying. Photograph: Alamy

Do you remember the last time you were dreading something, only to have it turn out to be a pleasant surprise? Maybe it was a bad summer blockbuster you were forced to watch, or a blind date set up by your parents.

You turn up, grumbling and prepared to hate every second of it. But then, a funny thing happens: you crack a smile – laugh out loud, even – and before you know it, you’re having a grand old time.


It turns out that the element of surprise has a big impact on how we feel from moment to moment and that we’ll be happier if something was unexpectedly satisfying as opposed to knowingly so, according to a new mathematical model of happiness. The study was published online in theProceedings of the National Academy of Sciences.

“Happiness is not about how well you’re doing in general, but rather if you’re doing better than expected,” said study author and neuroscientist Robb Rutledge of the Max Planck UCL Centre for Computational Psychiatry and Ageing Research.

For instance, say you go to a restaurant where the food was the best you’ve ever had. According to the happiness equation, you would be happier if you had expected it to be just average, as opposed to assuming it would be as delicious as it was.

“Most of our senses are much more tuned to changes in things than to levels, and the same is true for happiness,” said economist George Loewenstein at Carnegie Mellon University, who was not involved in the study. “This ensures that however successful we are, we are always going to be driving for more.”

But this doesn’t mean that having low expectations is the path to happiness, because the model also states that such pessimism leads to discontentment while you wait for an outcome. So if you make plans with a flaky friend and assume he’ll cancel, you’ll take a hit on your happiness in the meantime even if you experience a boost when he shows up on time.

On the other hand, imagine bubbling with anticipation about finally securing concert tickets to go see your favourite musician.


“The whole day, you might be a little bit happier as a result,” Rutledge said, even if the performance eventually disappoints and causes unhappiness later on. “Before you find out the outcome, you’ll be happier if your expectation is higher.”

These two factors – degree of surprise and overall expectation – play a dual role in determining our momentary wellbeing, although Rutledge found that surprise matters more. His team is testing people with depression to investigate how their emotions deviate from the model, with the hope that such knowledge can lead to better treatment.

Using an MRI scanner, Rutledge and his colleagues first measured the brain activity of 26 subjects who played a gambling game. Even though the players on average earned a net profit, their self-reported happiness did not increase between the beginning and the end of the experiment. In fact, there wasn’t any significant relationship between monetary earnings and happiness.

What did contribute to happiness was having a good chance of earning money or getting an unexpected reward.

“We’re happy when we have a rosy view of the future, but we’re also happy that the present exceeds what our expectations were,” Loewenstein said.

Also, quite unsurprisingly, the model found that past rewards had less of an impact on contentment as time passed.

With the MRI data, the researchers found that signals from a region of the brain called the striatum could be used to predict how happy people will be at any given time during the experiment. The researchers then created a smartphone app to test their model on a much wider audience – 18,420 online participants. The app featured the same decision-making game as the MRI experiment, and although the subjects were remote and anonymous, the results were still consistent with the model.

“All models are simplifications of reality,” Loewenstein said. “But their central insight that happiness depends on how reality pans out relative to expectation is a correct one, in my view.”

He notes that, while the idea behind the happiness equation isn’t new, the study is a “strong and interesting” piece of supportive evidence.

But can we use this knowledge to boost our own wellbeing?

[read full post here]

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