Dark Side: Stressful Stretches

Damage to the brain also shapes psychopathology in different ways depending on when it occurs. If at the age of two a child suffers damage to the orbital cortex, which is involved in ethics and morality, he may never develop a sense of right and wrong and may become profoundly psychopathic. If the damage occurs at the age of eight, the person’s orbital cortex may have helped other parts of the brain understand right and wrong, but he won’t be able to stop himself from committing wrong, as the orbital cortex is also involved in inhibition. If the damage occurs as a teenager or adult, the person will know right from wrong, and other areas of the brain involved in inhibition will be mature enough to help control impulsivity when the orbital cortex fails, but stressful conditions could easily push him over the edge. Even without specific brain damage, several psychiatric diseases can rear their heads later in life. The brain’s cortices develop in an orderly fas...