Individuals with Fragile X Syndrome show differences in how they understand and learn language from infancy. They frequently have lifelong delays in speech and language as well. In addition, they experience other auditory symptoms, including being very sensitive to certain sounds as well as being more sensitive than others to loud sounds. The underlying brain activity for sound perception and speech learning in Fragile X is not well understood, especially in the infant and toddler years. This study uses behavioral assessment of speech and language abilities, neuroimaging, and hearing tests to understand how speech and hearing are different in children with Fragile X Syndrome.
Diagnoses of Fragile X Syndrome, Typical Development, or History of Premature Birth
able to sit independently
English is spoken at home
For all participants: no seizures in the past 6 months
For typical development group and Fragile X group: not born prior to 32 weeks gestation