We can choose not to respond, but those shattering notes will infiltrate our noggins no matter what. The wail (however irritating it might be) sparks a response that ensures one thing: survival. Data suggests that the noise tips off parents more than childless adults— and women more than men—but a baby’s screech is tuned to trigger every grown-up. Each moment of screaming contains crucial information about a child’s level of distress. Throughout the seven seconds of audio below, acoustic clues in the sound waves signal just how urgently a kiddo needs help.
1 Attracting Attention
During late pregnancy and following birth, caregivers produce elevated levels of prolactin and oxytocin, which prime their ears to be especially sensitive to the frequency range of a newborn’s cries. These hormones also promote nurturing behaviors—like physically comforting the kid—and boost positive feelings that can help keep new moms and dads from throwing their hands up in despair.
This story is from the Winter 2019 edition of Popular Science.
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This story is from the Winter 2019 edition of Popular Science.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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