Why do girls scream all the time?

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Why: A woman on "Ellen" shrieked when the Gold Digger came to her house.

Answer: Some sociological/anthropological possibilities:

• When excited (like because she just won a bunch of money), a girl screams to release energy and to draw attention from others to help calm her down.
• When scared (of a spider or snake) or in danger, a scream attracts attention from someone who can come take care of business.
• When scared (of a movie or rollercoaster), a scream distracts her from trauma and can shock her out of the moment.
  
• At concerts, screams alert everyone (including the dudes onstage) that she is a sexually mature female creature.
• Girls are just expressive and extroverted.
  

Source: Physics Forum, Girls Ask Guys

The More You Know: I have never shrieked in my life.