Study hints at why parrots are great vocal imitators

An international team of scientists led by Duke University researchers has uncovered key structural differences in the brains of parrots that may explain the birds' unparalleled ability to imitate sounds and human speech.

Study shows how people perceive gender through speech

Using terminology such as "female" and "male," or "feminine" and "masculine" affects how people perceive gender when hearing someone's voice, according to a study from researchers at the Acoustic Phonetics and Perception ...

Americans' tolerance for racist speech declines

Focusing on the First Amendment, the American Civil Liberties Union (ACLU) went to court in 2017 to argue in favor of white nationalists' right to rally in Charlottesville, Virginia. But in the tragic aftermath of the rally, ...

Experts unlike ruling in Facebook speech case

(AP) -- The "like" button on Facebook seems like a relatively clear way to express your support for something, but a federal judge says that doesn't mean clicking it is constitutionally protected speech.

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