Brain damage
Brain damage can cause changes in normal decision-making processes. The amygdala is an area in the brain involved in emotion. Studies have found that patients with bilateral amygdala damage, which is damage in both hemispheres of the amygdala region in the brain, are deficient in decision-making. When an initial choice is made in decision-making, the result of this choice has an emotional response, which is controlled by the amygdala.