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Figure 2 | Orphanet Journal of Rare Diseases

Figure 2

From: A review of trisomy X (47,XXX)

Figure 2

Estimated Full-Scale IQ (FSIQ) distribution for females with 47,XXX compared to controls. In 47,XXX, there is a wide variation in IQ with the normal curve shifted to the left with the mean FSIQ at 85-90. The majority of females with 47,XXX have a FSIQ in the normal range, and many are above average compared to the general population. However, due to the shift of the curve, a larger percentage of females with 47,XXX fall in the intellectual disability range compared to controls. Adapted and reprinted with permission from Bender et. al. 1986 [42].

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