The FOXP2 gene appears to be crucial for normal language acquisition. Children with mutations in this gene take longer times for language acquisition and show difficulty in executing particular language tasks. The pattern of brain activation also differ from children with normal FOXP2 genes when performing language tasks. 

University of Rochester

Speech may be impaired in certain genetic conditions, such as:

-Down Syndrome

-22q deletion

-FoxP2 gene mutation.

Comorbid Diagnoses to Speech Sound Disorder

Breedlove, S. & Watson, N. (2017). Behavioral neuroscience, eighth edition. Oxford University Press.

Behavioral Neuroscience 8th Edition

Down syndrome is a developmental disorder that causes varying degrees of physical and cognitive disability. It is the most common genetic condition and is caused by a chromosomal abnormality in which there is an extra copy of chromosome 21. 

Learn Before

Related