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In budgerigars, contagious yawning does not seem to be related to social closeness. In certain neurological and psychiatric disorders, such as schizophrenia and autism, the patient has an impaired ability to infer the mental states of others. In such cases, yawn contagion can be used to evaluate their ability to infer or empathize with others.
Merely thinking about or seeing someone yawning can make you yawn. But why?
Yawning often feels involuntary—it’s triggered by the same part of the brain as sneezing, Sullivan says. But the difference is, a yawn can be controlled from “the top down” if you think ...
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The news feed is the primary system through which users are exposed to content posted on the network. Using a secret method (initially known as EdgeRank), Facebook selects a handful of updates to actually show users every time they visit their feed, out of an average of 1500 updates they can potentially receive.
Facebook buys data from third parties, gathered from both online and offline sources, to supplement its own data on users. Facebook maintains that it does not share data used for targeted advertising with the advertisers themselves. [124] The company states:
The Like button is one of Facebook's social plug-ins, which are features for websites outside Facebook as part of its Open Graph. [ 24 ] [ 25 ] Speaking at the company's F8 developer conference on April 21, 2010, the day of the launch, CEO Mark Zuckerberg said "We are building a Web where the default is social".
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