Gestalt psychology focuses on the idea that the whole is greater than the sum of its parts. Gestalt psychologists believed that people perceive things holistically rather than as separate parts. They rejected behaviorism and asserted that organization occurs between stimuli and responses to form new organized wholes that are different from their individual parts. Gestalt psychology uses the concept of "insight" to describe intelligent behavior as involving three steps: perceiving the situation as a whole, understanding relationships between factors, and immediately deciding and acting accordingly. In education, Gestalt psychology influenced delivering concepts and curriculum as unified wholes rather than separate parts.