About the Measure

Domains Literacy
Subscales Phonological awareness, alphabet principles, Comprehension, vocabulary and oral language
Target Construct Literacy; Phonological Awareness, letter name and sound, word attack, reading fluency
Description Designed to be short (one minute) fluency measures used to regularly monitor the development of early literacy and early reading skills. These research-based measures are linked to one another and predictive of later reading proficiency.
Test Authors Good, R. H. & Kaminsky, R. A.
Publisher http://dibels.uoregon.edu (2002)

Implementation details

Respondent Child
Prior knowledge Required People experienced with giving standardized tests, you could use a training video. Testers would also need to be very familiar with the Administration & Scoring Guide, available from our Download Materials page, and should practice testing with 5-7 students
Scoring Clear scoring and coding
Time Most DIBELS measures take 1 minute to administer
Age 4 years to 9 years

Psychometric details

UK norms NO
Norm / Criterion referenced Both
Standardisation sample 156-673
Reliability When 3 or 4 (Initial Sound Fluency) probes are aggregated together, all DIBELS measures have estimated reliability in the .90s.
Criterion validity Captures range of reading skills
Construct validity Insufficient data in the public domain to evaluate
Concurrent validity Concurrent validity of single DIBELS probes with the Woodcock-Johnson Broad Reading Cluster were .36 for Initial Sound Fluency, .56 for Phoneme Segmentation Fluency, .51 for Nonsense Word Fluency, and .75 for Letter Naming Fluency.