Description of the WUF Measure
The DIBELS Word Use Fluency (WUF) measure is an individually administered test of vocabulary and oral language. WUF is intended for most children from fall of kindergarten through third grade. A benchmark goal is not provided for WUF because additional research is needed to establish its linkage to other big ideas of literacy (phonological awareness, alphabetic principle, and accuracy and fluency with connected text). Tentatively, students in the lowest 20 percent of a school district using local norms should be considered at risk for poor language and reading outcomes, and those between the 20th percentile and 40th percentile should be considered at some risk.
DIBELS 6th Edition Technical Adequacy of the WUF Measure
Preliminary technical adequacy data on WUF with students in grades kindergarten through second grade indicate alternate form reliability ranging from .65 to .71. Preliminary evidence of criterion-related validity with the Test of Language Development-Primary: 3rd Edition (TOLD-P:3) ranges from .44 to .48. (Kaminski, Good, Shinn, Smith, Laimon, Shinn, Bratten (2004).
How does WUF link to the Big Ideas in Beginning Reading?
Word Use Fluency assesses a student's expressive Vocabulary skills. Expressive vocabulary is the ability to use words to convey a specific meaning for a particular label or word.
To learn more, visit the Big Ideas in Beginning Reading website.