Morgan was born with a muscle problem that interfered with her ability to focus both of her eyes on the same object.However,the problem was not detected until third grade.Morgan's vision has greatly improved with physical therapy and glasses but it is likely that her depth perception has been adversely affected for life.This is an example of

Question

Quizplus · Accepted Answer

This is an example of critical periods of development because it illustrates a time frame in early life when the absence of certain stimuli or experiences, such as proper visual input, can lead to irreversible changes, in this case, affecting depth perception.

Morgan Was Born with a Muscle Problem That Interfered with Her