Effects of Social Gaze Training on Brain and Behavior in Fragile X Syndrome

Inclusion Criteria: 1. Boys diagnosed with fragile X syndrome 2. Boys with intellectual disability who do not have FXS or other known genetic disorder associated with intellectual disability 3. Age 8 to 18 years inclusive 4. Ability to travel to Stanford 5. Vineland Adaptive Behavior Scales standard score between 50 and 75 points Exclusion Criteria: 1. Sensory impairments, or any other serious medical or neurological condition that affects growth or development (e.g., seizure disorder, diabetes, congenital heart disease). 2. Materials in body that would preclude an MRI scan (e.g., dental braces).