Websites, books and tools
Learn to more about measuring and improving readability.
The U.S. Department of Education’s study is the most comprehensive, statistically reliable source on literacy in the United States. Also see the 1993 results.
Law professor Joseph Kimble’s treatise on legalese makes the case for plain language and includes dozens of case studies showing that plain language saves money and time and drives people to act more effectively than convoluted prose.
William H. Dubay,,” Impact Information: Plain Language Services, 2005
Learn about U.S. literacy studies and research on readability and readability formulas from William H. Dubay, principal of Impact Information.
Smart Language (PDF)
William H. DuBay’s introduction to adult literacy surveys, research on readability and readability formulas.
Read the classics, the L.A. Sherman to the Flesch formulas, collected and curated by Impact Information’s William H. DuBay.
William H. DuBay’s introduction to the principles of plain language and guidelines for matching your text with the reading skill of the audience
Readability expert William H. DuBay’s blog