A–Z Glossary

Social responsiveness

Social responsiveness is an infant's pattern of engaging with people through gaze, calming, sounds, and interaction cues.

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Why babies smile randomly

Why babies smile randomly

Early smiles are often spontaneous, not social In newborns, a smile does not always mean the baby is expressing pleasure in the adult sense. Early facial smiles are frequently spontaneous, endogenous events that arise from immature nervous-system activity rather than from an external social cue. They can appear briefly and vanish just as quickly, which […]