Andy JohnsonHost
When you read, you have both visual and non-visual information available to you.

Now, you may not realize it, but when you read it, the non-visual information is just as important as the visual information.

And this is the knowledge, your knowledge of facts and concepts and their interrelationships.

This is your knowledge stored in your head of words, your internal dictionary, or your vocabulary.

Well, others estimate that an average 20-year-old native speaker of American English knows only about 42,000 lemmas.

A lemma is a basic word form, as you might see it in a dictionary, that's used to represent all other forms.

Can you define it? Can you use it? Do you recognize it? Do you understand it in a sentence? But the point here is that we've got a whole bunch of lemmas in our head.

And these are used to help us recognize the words on the page and create meaning with print as we're reading.

When you read, you have both visual and non-visual information available to you.

Now, you may not realize it, but when you read it, the non-visual information is just as important as the visual information.

And this is the knowledge, your knowledge of facts and concepts and their interrelationships.

This is your knowledge stored in your head of words, your internal dictionary, or your vocabulary.

Well, others estimate that an average 20-year-old native speaker of American English knows only about 42,000 lemmas.

A lemma is a basic word form, as you might see it in a dictionary, that's used to represent all other forms.

Can you define it? Can you use it? Do you recognize it? Do you understand it in a sentence? But the point here is that we've got a whole bunch of lemmas in our head.

And these are used to help us recognize the words on the page and create meaning with print as we're reading.
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