Answer:
the fact that she is still developing size constancy.
Step-by-step explanation:
The different types of perceptual constancy include size, shape, and Brightness, etc.
Size constancy: In psychology, the term size constancy refers to the phenomenon of perceptual constancy, and is described as an object that will be perceived as of the same size to a certain range irrespective of the changes that appear in the retinal distance or image size.
Example: An individual will perceive a building of the same size irrespective of the distance he has from that building.
In the question above, Emma’s belief that the men grew larger is best explained by the fact that she is still developing size constancy.