Websites, books & tools
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How does word length affect readability? Is it OK to start a sentence with a conjunction? Does that passive voice really make your butt look bigger? In this workshop, you’ll learn to apply more than 130 years of readability research to your own messages. |
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The Principles of Readability (PDF)
Thank God for William H. Dubay, principal of Impact Information! He’s put tons of information about classic readability studies into four books. The best news? They’re all free. |
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Learn about adult literacy surveys and research on readability and the readability formulas from William H. Dubay, principal of Impact Information. |
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Unlocking Language: The Classic Readability Studies (PDF)
Read the original articles of readability researchers, including William S. Gray, Edgar Dale and Jeanne S. Chall — all collected and curated by Impact Information’s William H. DuBay. |
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Working with Plain Language (PDF)
William H. DuBay’s introduction to the principles of plain language and guidelines for matching your text with the reading skill of the audience |
Reach more readers with tight writing
Would your piece be twice as good if it were half as long? Yes, say readability experts.
So how long should your message be? Your paragraphs? Your sentences? Your words? What reading ease level should you hit?
Learn how to write clearer, more concise messages at our clear-writing course.
