Users interested in assessing Dyslexia using the WJ IV assessment batteries (WJ IV COG, WJ IV ACH, and WJ IV OL) are strongly encouraged to review the Assessment Service Bulletin below. 

The bulletin describes the various tests and clusters of the WJ IV that can be used as part of a larger comprehensive assessment of Dyslexia. You can find the bulletin here: Assessing Dyslexia Using the WJ IV

Additional information regarding the assessment of Dyslexia and other learning disabilities can be found on our Clinical Professional Development page: Clinical Professional Development Resources (