Dr. Mateo believes that every child is born a "blank slate." Children's early environments shape their personalities, though the children may be continually affected by their environments as they grow. Everything comes down to a simple principle in Dr. Mateo's mind: If our behaviors are followed by satisfying consequences, we will repeat them, and if the consequences are unsatisfying, we won't repeat them. Dr. Mateo is probably a _____ therapist.