The sound of fear: Why so many animals scream
Summary
NPR's Short Wave explores the science behind the "sound of fear" with reporter Nate Rott and UCLA behavioral ecologist Dan Blumstein. The episode examines how nonlinear acoustic attributes, such as the irregularities in screams, trigger universal fear responses across mammals, including humans and yellow-bellied marmots. Blumstein explains that these jagged sounds signal extreme duress, making them harder to ignore than standard alarm calls. The discussion also covers how filmmakers exploit these biological triggers in horror movies to evoke dread, ultimately suggesting that embracing our i…
Topics discussed
Sponsor: Capella University
Intro: Halloween and the sound of fear
Introducing scientist Dan Blumstein
Dan's background and previous research
Yellow-bellied marmots and climate change
Marmot appearance and long-term study
Marmot alarm calls vs. screams
Teaser: The startling marmot scream
Sponsors: NetSuite, Edward Jones, Mint Mobile
The origin of the scream research
Physics of screams: Nonlinear sounds
Universality of screams across species
Movie screams and acting performances
Why screams are biologically evocative
Experiments: Noise and animal behavior
Human perception and horror movie soundtracks
Film studies: Nonlinear sounds in horror
Embracing fear: Halloween and evolution
Conclusion and credits
Sponsor: Capella University
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