What Is Fragile X Syndrome?
Reviewed: Dr. Gromatzky
2. Cognitive Impairment
Some males with fragile X have severe intellectual impairment, sometimes with an adult I.Q. of 40. Sequential processing and short-term memory are especially impaired. Others have only slight learning disabilities.
Thirty-five to 50% of females with fragile X have some type of significant intellectual limitation. Others may have milder impairments or be cognitively unaffected. Both boys and girls sometimes have delayed speech development, and learning disabilities in mathematics are common.
