Prenatal brain development often leads many traits to be based on both nature and nurture. Adoption and Twin studies have allowed behavioral geneticists to learn more about how the prenatal environment verses simple heredity effect the development of people. Identical twins, separated at birth were given tests that measure their intelligence, personality, heart rate, and brain waves; their results appeared virtually identical. However, further studies have proved that identical twins reared together have greater similarities then separated identical twins do. Therefore, even though nurture plays a role in similarly due to prenatal brain development, nature also makes a slight difference.
The illegal use of dugs during pregnancy also effect prenatal brain development. Drugs consumed during pregnancy can have a detrimental affect on the baby. The baby can be born too small or too soon, have withdrawal symptoms, birth defects, or learning and behavioral problems. This shows that in this care the nurture in the womb has a greater affect then genetics on the baby.
The acquisition of a first language is purely based on nurture. It is proven that any child can learn any language with the same about of facility if learnt at the appropriate time. However, any language acquired after this period of time if stored in a different area of the brain, thus the child can never fully master it.
Many epilepsy patients are inclined to have a hemispherectomy due to incessant seizures. When a left side hemispherectomy is conducted, the patient is partially...