How was the Lexile Analyzer enhanced?
The Lexile Analyzer has been enhanced in several ways:
- Lexile measures are now more precise. Previously, all books measuring below 0L were given a standalone 'BR' (Beginning Reader) code. Now — thanks to extensive research — the Lexile Analyzer provides a Lexile measure after the BR code. The addition of a Lexile measure allows for greater differentiation at the beginner level.
- The Lexile scale was extended, and now Lexile measures can be reported below 0L. While the numeric value of a Lexile measure hasn't changed, the scale itself has expanded. Beginning Reader (BR) is a code given to readers and texts that have measures below 0L on the Lexile scale. A Lexile measure of BR100L indicates that the Lexile measure is 100 units below 0L. Just like -10° is higher (warmer) than -30° on a thermometer, a BR100L book is more complex than a BR300L book. Similarly, a student reading at BR100L is a more advanced reader than a student reading at BR300L.
- The Lexile Analyzer is measuring across more dimensions. Based on input from teachers and reading specialists and through studies on the reading behaviors of young students, researchers spent several years analyzing over 200 text characteristics that influence text complexity. Through these research studies, nine variables were identified as the variables that most accurately and reliably measure the text complexity of K–2 books. This nine-variable model is now incorporated into the Lexile Analyzer in order to provide improved measurement for K–2 content.
- New information (i.e., early-reading indicators) are reported from the Lexile Analyzer. The Lexile Analyzer now offers additional information to help identify important text features in early-reading books that could present more or less of a challenge for a reader. The early-reading indicators are derived from the nine-variable model that the Lexile Analyzer uses to measure text complexity. These indicators are assigned a level of difficulty for typical K–2 books.
- Infrastructure improvements were made to expand the corpus and accommodate more British spellings. Improvements included more than doubling the corpus that is used to evaluate semantic demand (word difficulty) to over 1.4 billion words. British spellings were also updated for expanded coverage to corresponding American English spellings.