The physical structure of the brain. The relationship of the cerebral cortex to the subcortical parts of the brain. How the brain is organized to do what it does. The brain connections between hemispheric functions. Have limited use of syntax, semantics and pragmatics.
Women show more bilateral participation in language than men do.
People who are left-handed have stronger right hemisphere language functions. One and one half years. Two and one half years. Three and one half years.