Screaming can save lives. Non-human primates and other mammalian species frequently use scream-like calls when embroiled in social conflicts or to signal the presence of predators and other threats.
While humans also scream to signal danger or communicate aggression, they scream when experiencing strong emotions such as despair or joy as well.
However, past studies on this topic have largely focused on alarming fear screams. [Read more…] about Joyful screams perceived more strongly than screams of fear or anger