Texts often describe how places, people, or objects look or sound or smell. Readers can enrich their experience and increase their understanding by forming mental pictures: by imagining what is being described as exactly as the words of the text allow them to. This process is what theorists of reader-response call “concretization”. […] Concretization is a skill often possessed by children. In fact, imagining as literally and completely as possible the world and the people a text describes is the only way that many children know of building consistency from the texts they read. This seems to be the reason that so many children and other inexperienced readers worry about the logic and coherence of the worlds that texts enable them to concretize—why they so often get angry when there are inconsistent details in descriptions of places and people or confusions in the sequence of events.
On the other hand, concretization is a skill that many adults have forgetten. Many readers have been taught to focus so much on using texts’ potential for engendering sights and smells and sounds. That’s a pity. Not only does it deprive such readers of a source of pleasure, but it also prevents them from understanding the subtle richness of the texts they read.
– The Pleasure of Children’s Literature by Perry Nodelman and Mavis Reimer