"Once people reach about the age of twelve, they start to combine sensory information to make better sense of the world. This means adults connect, say, related sights and noises into a single unified perception. In other words, while an adult would perceive a big, barking dog as a single entity, a six-year-old would treat the big dog and the frightening barks as two independent sensory events. In fact, this separation of data is even more fundamental than that, as children separate out different aspects of a single sense."