Depth Perception plays a role in the perceptual processes of Size and Shape constancy.

Depth perception is important to the development of many worldly concepts to which language is associated; but it also interfaces with other perceptual processes, like size and shape constancy and spatial relations.

4. Size and Shape Constancy: If our perception of reality were left to the transducers alone, the world would be more like that in Alice in Wonderland. Alice, for example, experiences a time when people seem to grow and shrink.

Ironically, that is exactly what happens when people or animals come towards or away from us. Their images swell or shrink on our retina. We are hardly aware of this, however, because our brain, in a perceptual process called Size Constancy, automatically provides a trade-off between distance and size.

In cartoons, for example, when they want to portray an approaching car, they simply make it larger. We perceive it as not changing in size but rather as coming closer.