In implied that That Freud's theory of the unconscious motivations of the id provides impossible projective testing. Because it is almost impossible to gather up the data about individuals' hidden beahvior or emotion simply by using observation toward the behaviors that they displayed casually in their environment.
Severely depressed individuals are especially likely to show reduced brain activity in the left frontal lobe.
This is because the left frontal lobe is responsible for happy feelings, and emotions of belonging, which patients diagnosed with severe depression do not experience. They show elevated brain activity in the right frontal lobe, which is responsible for feelings of isolation.
