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Table 3 Study enrollment and group mean IQ scores

From: The effect of intellectual ability on functional activation in a neurodevelopmental disorder: preliminary evidence from multiple fMRI studies in Williams syndrome

fMRI study IQ measure Mean ± SD (n)
Auditory MNS study
  Composite 69.3 ± 20.9 (16)
  Verbal 76.3 ± 18.7 (16)
  Non-verbal 67.6 ±21.6 (16)
Music-Noise study
  Composite 70.1 ± 19.2 (15)
  Verbal 80.4 ± 14.7 (15)
  Non-verbal 66.1 ± 20.6 (15)
Faces study
  Composite 71 ± 15.9 (13)
  Verbal 69.2 ± 20.0 (13)
  Non-verbal 79.2 ± 11.8 (13)
Images study
  Composite 70.5 ± 16.5 (12)
  Verbal 68.3 ± 20.6 (12)
  Non-verbal 79.1 ± 12. 3 (12)
  1. Subject enrollment is shown for each of four fMRI tasks performed. KBIT-2 IQ scores (mean ± SD) are reported for subjects enrolled in each task. The All Subjects group, which includes all participants in a task, was stratified into Low IQ (<1 SD below normal) and High IQ (within 1 SD of normal) subject groups based on scores for each IQ measure given by the KBIT-2: composite, verbal, and non-verbal.