If You're Happy, Then We Know It

Scientist have created a mechanism to measure happiness of millions of bloggers. Their "hedonometer" gathers sentences beginning "I feel..." Then, applying standardized "psychological valence" of words, each sentence receives a happiness score. Their approach can let them measure happiness levels of, e.g., people over 65 in Oregon on Wednesdays. The happiest day in 4 years: Election Day 2008. Michael Jackson's death: one of the unhappiest. Their results show young teenagers are unhappiest.

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