In 1972, Professor Walter Mischel tested the willpower of 600 four-year-olds to six-year-olds.
1972年，沃尔特·米歇尔教授测试了600名4岁至6岁儿童的意志力。
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It is believed that the road to a "good" college begins as early as preschool, and even four-year-olds are required to read and memorize new words every day.
人们认为，通往“好”大学的道路早在幼儿园就开始了，甚至4岁的孩子也需要每天阅读和记忆新单词。
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The report recommends that more resources be devoted to teaching four-year-olds.