Social smile appears between ....... (Choose the closest answer.)

📌 Core Theoretical Concept:

During infancy, the emergence of emotional and social responses follows a predictable chronological developmental sequence. In the first few weeks of life, an infant's smiles are predominantly reflexive, often triggered by internal physiological states or during sleep. However, as the infant's central nervous system matures and they begin to recognize human faces and voices, a genuine interactive response develops. This milestone, known as the 'social smile', typically appears between 6 and 10 weeks of age. It represents a significant landmark in early socio-emotional development, indicating that the infant is actively engaging with social stimuli and recognizing primary caregivers or human faces in their environment.

📊 Key Exam Points:

• The social smile is the infant's first voluntary, socially-elicited emotional response to human interaction and facial expressions.
• According to developmental psychology research, this distinct milestone consistently manifests in healthy infants between 6 to 10 weeks of age.
• Other ranges like 8-10 weeks or 10-12 weeks represent narrower or later segments, whereas 6 to 10 weeks encompasses the standard window for the closest approximation in standard developmental charts.
• This developmental marker correlates closely with improvements in visual tracking, cognitive processing, and neurological maturation during early infancy.