An App On The Search For The Secret To Happiness

An app that helps researchers measure happiness? It's here! NPR's Guy Raz from the Ted Radio Hour speaks with social scientist Matt Killingsworth, who has developed the Happy App.

Source: http://www.npr.org/2014/02/15/277385186/an-app-on-the-search-for-the-secret-to-happiness?ft=1&f=1019

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