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Short Wave

Short Wave

Learning A Second Language As An Adult

May 13, 2025 · 14m

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About this episode

Becoming fluent in a second language is difficult. But for adults, is it impossible? Science says no. In this encore episode, Short Wave host Emily Kwong dissects the "critical period hypothesis," a theory which linguists have been debating for decades — with the help of Sarah Frances Phillips , a Ph.D. student in the linguistics department at New York University. Together, Emily and former Short Wave host Maddie Sofia explore where the theory comes from, how it applies to second-language acquisition and what it means for Emily's efforts to learn Mandarin Chinese as an adult. Have a linguistics or neuroscience question? Email us at shortwave@npr.org — we'd love to hear from you! Listen to…