Three-month-old Zoey looks up at her mother and smiles.Researchers call this type of smiling:

Question

Quizplus · Accepted Answer

Social smiling is the smiling that occurs in response to social stimuli, such as a caregiver's face. This type of smiling usually appears around 6-8 weeks of age and is a sign of the development of social responsiveness and emotional expression. Choice A (trust smiling) is not a recognized type of smiling. Choice C (reflexive smiling) is a type of smiling that occurs due to physiological factors such as gas but does not involve social interaction. Choice D (attachment smiling) is not a recognized type of smiling.

Three-Month-Old Zoey Looks Up at Her Mother and Smiles