Scores earned by participants by genotype. Overall group mean is indicated with solid dark line. Means for the XYY, XXY, and XXX PRE1, PRE2, and POST subgroups are indicated with dotted lines. Scores reported in Panels a–f are as follows: (a)WASI Estimated-VIQ, (b)WASI Estimated-PIQ, (c)CCC-2 Structural Language, (d)CCC-2 Pragmatic Language, (e)CCC-2 Social Interaction Difference Index, and (f) SRS Raw Score. Note that PRE1= Prenatally-diagnosed subgroup whose parents were not part of support group or joined when child was <1year; PRE2=Prenatally-diagnosed subgroup whose parents joined support group when child was >1year; POST=Postnatally diagnosed subgroup.