I have a 17 year old student presenting with no phonological awareness limitations or phonological memory difficulties (standard scores ranging between CTOPP composites 103-112). Verbal and Visual IQ’s indicate a strength for visual abilities, but within normal ranges.

Spelling, writing, and reading are very proficient within the normal ranges for accuracy. However, the main difficulties are speed of processing. CTOPP Rapid naming composite standard score of 61 (i.e., very poor), reading speed 40% slower than would be expected of age, comprehension SS 89 (ART and WIAT). SDMT 78. Writing speed not formally measured but 20% slower than would be expected of age. Verbal and working memory standard scores are within the normal ranges.
The student wants a diagnosis of dyslexia! However, this is clearly a deficit in phonological processing speed ability, not phonological awareness or memory. Not a double deficit, but a single deficit in processing speed. Does this warrant a dyslexia diagnosis?

Dr. Pierson's Response: 

The simple answer is ‘yes.’ Individuals with rapid automatic naming (RAN) difficulties frequently have reading comprehension difficulties due to the challenges of the amount of energy expended to read text fluently -- by the time they get to the end of the passage, they have forgotten what was at the beginning. The same thing can be true of writing -- getting their thoughts onto paper can be extremely challenging.

Your data relative to the RAN performance and comprehension and writing certainly fit the picture.

Here is an excellent piece from the guru (and really great person) of RAN and its influences on reading -- Dr. Maryanne Wolf. http://ase.tufts.edu/crlr/documents/2012arop-rapidautomatizednaming.pdf You might also want to get Dr. Wolf’s edited book, "Dyslexia, Fluency, and the Brain."

Many times these people benefit from direct instruction on strategy use. We cannot necessarily make them faster readers, but we can help them be more efficient readers, which eases the burden. I’ve got strategies for here:

Additionally, some of the suggestions on executive functioning might be helpful here.