Charles Yang's New Study Reveals That Young Children Understand Grammar but Chimps Don’t

A new study conducted by Charles Yang, Associate Professor of Linguistics in the School of Arts and Sciences and of Computer and Information Science in the School of Engineering and Applied Science, has shown that children as young as two understand basic grammar rules when they first learn to speak and are not simply imitating adults. The study was published in Proceedings of the National Academy of Sciences.

Yang applied the same statistical analysis on data from one of the most famous animal language-acquisition experiments—Project Nim—and showed that Nim Chimpsky, a chimpanzee who was taught sign language over the course of many years, never grasped rules like those in a two-year-old’s grammar.

“The idea that children are only imitating adults’ language is very intuitive, so it’s seen a revival over the last few years,” Yang said. “But this is strong statistical evidence in favor of the idea that children actually know a lot about abstract grammar from an early age.”

Read the full story here.

Arts & Sciences News

Marisa C. Kozlowski Named Next Associate Dean for the Natural Sciences

Kozlowski, who joined the Penn faculty in 1997, succeeds Mark Trodden, who transitions to the Dean of Penn Arts & Sciences on June 1.

View Article >
One Fourth Year, One Alum Receive 2025 Hertz Fellowship

Eric Tao, C’25, Gr’25 (left), and Suraj Chandran, C’23, were awarded the honor, part of a group of 19 fellows selected this year. Each one receives five years of funding toward a doctoral program.

View Article >
Benjamin Nathans Wins 2025 Pulitzer Prize in General Nonfiction

Nathans, Alan Charles Kors Endowed Term Professor of History, won for his book “To the Success of Our Hopeless Cause: The Many Lives of the Soviet Dissident Movement.”

View Article >
Mark Devlin Elected to National Academy of Sciences

He joins three others from Penn to receive the honor this year, all recognized for “distinguished and continuing achievements in original research.”

View Article >
Michael Jones-Correa and Sophia Rosenfeld Elected to American Academy of Arts & Sciences

They join three others from the University of Pennsylvania, selected as part of the Academy’s mission to convene leaders from “every field of human endeavor to examine new ideas, address issues of importance to the nation and the world, and work together.”

View Article >
Eva Del Soldato Awarded 2025-26 Rome Prize

She joins Sean Burkholder, of the Weitzman School of Design, and just 33 others in receiving the prestigious honor from the American Academy in Rome.

View Article >