Human sounds convey emotions clearer and faster than words
It takes just one-tenth of a second for our brains to begin to recognize emotions conveyed by vocalizations. It doesn't matter whether the non-verbal sounds are growls of anger, the laughter of happiness or cries of sadness. More importantly, the researchers have also discovered that we pay more attention when an emotion (such as happiness, sadness or anger) is expressed through vocalizations than we do when the same emotion is expressed in speech.
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