Education: Ice Cream v. Eiskrem

Many a doting parent writes down for safekeeping his child's first baby words. But Dr. Werner F. Leopold, a professor at Northwestern University, outdid most parents. He made a daily record of his child's words for seven years. Last week he published part of this record as scientific research.*

Dr. Leopold is a professor of German and a linguistics expert. When his first daughter, Hildegard, was born nine years ago, Professor Leopold immediately started a serious study of her language development. He kept a diary, put down every sound his baby uttered. (Eventually,...

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