FSIQ was a bad way of identifying the cohort. They should break it up into GAI, WMI, and PSI instead since the key indications of cognitive capacity are in GAI and the WMI and PSI just show the area of deficit. I.E. a 104 FSIQ may be the same as a 110 FSIQ for neurotypical since the WMI and PSI are probably 1/2 to 1 standard deviation below the mean for the ADHD cohort. I know several gifted students with an FSIQ of around 110, so that also introduces the issue of gifted behaviors which can also present as inattentiveness. FSIQ 110, GAI >> 130, WMI and PSI below 85. This assumes they used something like WISC IV. Also, ignoring PSI and focussing on WMI kind of misses half the issue. It all comes down to executive function loading.