Negative Sentiments Follow Seasonal Patterns

History repeats itself, the saying goes, but it was always hard to prove because it would involve analyzing a huge amount of data. However, by reviewing 87 years of U.S. and British newspapers, as well as postings on Twitter and visits to Wikipedia, researchers at the University of Bristol found proof of strong periodic patterns in people’s collective behavior. For instance, it turns out that the amount of time people devote to work or leisure depends on the weather and seasons, which...

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