Thanks to my friends at the Bay Area Editors’ Forum, I just learned of a great Wired.com article called “What’s Up With That: Why It’s So Hard to Catch Your Own Typos.” The article offers some of the science behind that all-too-common malady.
The piece quotes psychologist Tom Stafford, a researcher at the UK’s University of Sheffield: “When you’re writing, you’re trying to convey meaning. It’s a very high-level task.” And your brain temporarily concentrates on that task to the exclusion of other ones, such as accurate typing.
Essentially, when you’re writing you’re in what I call the “creative” phase. And well you should be! Get it all out and do your best to say what you want to say.