Intuitive thinking is the abilityto take what you may sense or perceiveto be true and, without knowledge or evidence, appropriately factor it in to the final decision.
On the other hand, it is absolutely true that head trauma -- when severe -- can completely change a person's abilityto think, feel and accurately perceive reality.
The first skill is the abilityto deal with complexity: To not see the world in black and white but toperceive the full palette of colors that make up the current situation.