There were 18 subjects with FAS that were misclassified as CON. In comparison to the FAS subjects that were correctly classified (n = 61), these subjects differed significantly (p < .05) on FSIQ (higher), country (more from U.S. than South Africa), and race (more White subjects). They were marginally different on microcephaly (less likely; Fisher’s exact p = .063). They did not differ on age, sex, handedness, ethnicity, any measure of growth deficiency, any measure of structural abnormality, or presence of an ADHD diagnosis. On the neuropsychological measures, they differed (misclassified > correctly classified) significantly on all measures except the two CANTAB Intra-Extra Dimensional Shift measures (Stages completed, p = .065, Errors, p = .116).
