1. A 3-month-old infant suddenly loses the ability to smile, coo, and make eye contact, and has regressed in motor skills. What is the most urgent concern for a developmental psychologist?
A.
Normal developmental variability.
B.
Signs of a temporary illness.
C.
Potential neurological impairment or developmental regression.
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D.
A reaction to a change in routine.
📖 Additional Information
Normal developmental variability.
Signs of a temporary illness.
Potential neurological impairment or developmental regression.
