January 27, 2013


A Wealth of Words : The key to increasing upward mobility is expanding vocabulary. (E. D. HIRSCH, JR., Winter 2013, City Journal)

[C]orrelations between vocabulary size and life chances are as firm as any correlations in educational research. Of course, vocabulary isn't perfectly correlated with knowledge. People with similar vocabulary sizes may vary significantly in their talent and in the depth of their understanding. Nonetheless, there's no better index to accumulated knowledge and general competence than the size of a person's vocabulary. Simply put: knowing more words makes you smarter. And between 1962 and the present, a big segment of the American population began knowing fewer words, getting less smart, and becoming demonstrably less able to earn a high income.

Why should vocabulary size be related to achieved intelligence and real-world competence? Though the intricate details of cognitive abilities are under constant study and refinement, it's possible to give a rough answer. The space where we solve our problems is called "working memory." For everyone, even geniuses, it's a small space that can hold only a few items in suspension for only a few seconds. If one doesn't make the right connections within that space, one has to start over again. Hence, one method for coping and problem solving is to reduce the number of items that one has to make sense of at any moment. The psychologist George A. Miller called that process "chunking." Telephone numbers and Social Security numbers are good examples. The number (212) 374-5278, written in three chunks, is a lot easier to cope with than 2123745278.

Words are fantastically effective chunking devices. Suppose you put a single item into your working memory--say, "Pasteur." So long as you hold in your long-term memory a lot of associations with that name, you don't need to dredge them up and try to cram them into your working memory. The name serves as a brief proxy for whatever aspects will turn out to be needed to cope with your problem. The more readily available such proxies are for you, the better you will be at dealing with various problems. Extend this example to whole spheres of knowledge and experience, and you'll realize that a large vocabulary is a powerful coping device that enhances one's general cognitive ability.

If vocabulary is related to achieved intelligence and to economic success, our schools need to figure out how to encourage vocabulary growth.

Unfortunately, your vocabulary is almost entirely a function of your home life.  One doubts you can do much for kids whose parents don't read.  But we could at least use the hours that we hold them captive to make them read on their own.
Posted by at January 27, 2013 8:50 AM
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