This study considers the degree to which two quantitative indices--Lexiles and Coh-Metrix--discriminate across levels of difficulty and types of beginning reading texts. The database consisted of 444 texts, representing seven text types that are part of reading/language arts instruction. These text types were distributed across seven levels of…

The purpose of this book is to introduce the research on readability, defined here as reading ease. The first part of the book covers how people read. A series of national literacy surveys show that the average person in the U.S. and most other countries are adults of limited reading skills. For example, the average adult in the U.S. reads at the…