Three-year-old Kevin was flying in a plane for the first time. As the plane descended for its landing, Kevin became very excited at all the toy houses and cars he saw, and he couldn’t wait for the plane to land so he could play with the toys. Kevin’s misinterpretation of the true size of the houses and cars the plane passed over shows that he is still not fully utilizing
a. perceptual constancy.b. linear perspective.c. binocular depth cues.d. visual accommodation.

Perceptual constancy is the name that neuroscientists assign to the specific set of perceptive rules a child must acquire to make sense of the physical world around him. When you watch a person walk away, the projection of the person on your retina decreases. It has not decreased in size, we only know that it has moved away, this is called constancy of size. Other constants include the ability to recognize that the shapes of objects are the same, despite the different angles from which they can be viewed, called the shape constancy, and the ability to recognize that colors are constant, even as light or light change. shadow over them, called the color constancy. Taken together, constants fit into the broader concept, the concept of object constancy, which is the recognition that objects remain the same despite appearing to change in some ways. Constances develop from the first five weeks and are fully developed at approximately 4 years.