The left side is bigger than the right hemisphere. Is not associated with speech production Good auditory comprehension of language, including nouns and verbs. Limited reading and little writing ability. Person is often left-handed. Possible reason that most females process language in both hemispheres.
Males have higher rates of speech and language delays, and dyslexia.
Stressful pregnancies are highly correlated with right hemisphere development. Infants do not hear enough clear, spoken words. Exposure to small amounts of vocabulary in the first three years is a problem. IQ also suffers . Between the ages four and ten the brain maintains active connections and eliminates underutilized ones.