This paper studied the usefulness of differential item functioning (DIF) methodology for examining potential mode effects. Although the goal was not to validate the comparability of the assessments per se, it is of interest to speculate why some formats could give rise to differential performance. Data were obtained from two instruments on which…

This article describes the Woodcock Diagnostic Reading Battery, an instrument designed to assess the abilities and achievements of individuals ages 4 through 90 in the areas of basic reading skills, reading comprehension, phonological awareness, oral language comprehension, and reading aptitude. Its administration, standardization, reliability,…

This article describes the Woodcock Reading Mastery Tests Revised/Normative Update, an instrument designed to assess reading ability in students in grades K-12, undergraduate college students, and adults. The tests evaluate basic reading skills, reading comprehension, and reading readiness. Its administration, standardization, reliability, and…