Teen brains no longer find moms’ voices uniquely rewarding starting around age 13, and start to tune into unfamiliar voices more, according to new research.

"Just as an infant knows to tune into her mother's voice, an adolescent knows to tune into novel voices," says Daniel Abrams. "As a teen, you don't know you're doing this. You're just being you. Your mind is increasingly sensitive to and attracted to these unfamiliar voices." Gladskikh Tatiana/Shutterstock
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