BBC report says scientists have developed a mathematical equation that can predict momentary delight. They found that participants were happiest when they performed better than expected during a risk-reward task.

"We can look at past decisions and outcomes and predict exactly how happy you will say you are at any point in time," said lead author Dr Robb Rutledge from University College London.

What is your opinion about this research? Now that we have an equation which can we use it in survey research to replace a Likert scale for such questions? Any further comments will help. Thanks.

Robb B. Rutledge, Nikolina Skandali, Peter Dayan, and Raymond J. Dolan - A computational and neural model of momentary subjective well-being, August 4, 2014, doi:10.1073/pnas.1407535111

http://www.bbc.com/news/science-environment-28592838

http://www.pnas.org/content/early/2014/07/31/1407535111

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