Citations that mention the average IQ of the dyslexic population may not be accounting for the definition of dyslexic, which is still quite controversial (at the psychometric level, that is). Historically, by definition, a dyslexic must be at least average in overall intelligence (no dual diagnoses for those below average), which would mean that the average IQ of the dyslexic population is, again, by definition, above that of the general population. (Since all below-average IQs are systematically excluded.)
Others believe that there are learners whose global cognition is slightly-to-significantly below average, who have focal deficits in basic reading skills that could be described as dyslexic. If we include them into the statistics, the average intelligence of the dyslexic population might be equal to or lower than the general population. Those who take this position have historically been in the minority.
