After playing by himself for a while, young Luke smiles when he sees the face of his father. What term best describes this response?
A) Social smile
B) Cooperative play
C) Parallel play
D) Social referencing

Question

Quizplus · Accepted Answer

A social smile is a response to social stimuli, such as seeing the face of a parent, which typically develops in infants around 6 to 8 weeks of age.

After Playing by Himself for a While, Young Luke Smiles