Discovering Prime Words
To find out what the most commonly used words are, my com-
pany, The Literacy Company, downloaded all the books available
on Project Gutenberg (www.gutenberg.org), the online digital
library consisting of more than 13,000 books (about 548 million
words altogether). We entered all the books in a database and then
queried the database to find out the 2,000 most popular words.
I call these words prime words because they’re the primary words
you encounter in your reading. Based on our experiment with
Project Guttenberg, these prime words represent 75 percent of all
the words in the English language. That means that you can master
the prime words and rest assured that you know 75 percent of the
vocabulary words you need in your reading.
After you get the prime words down, your reading comprehension,
retention, and recall increase because knowing the prime words
gives you these advantages in your reading:
✓ You recognize the words immediately, so you don’t have to
decode them.
✓ Your eyes don’t fixate on the words (so you can read them as
part of word groups)

