Research suggests that female infants smile significantly more than male infants, particularly towards strangers. This difference is observed at both two and three months of age.
The Smile Difference Between Baby Girls and Boys
Studies show a notable distinction in smiling behavior between baby girls and boys. Specifically, female infants exhibit a considerably higher frequency of smiling, especially when interacting with unfamiliar individuals.
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Stranger Interaction: Girl babies smile more at strangers than they do at their mothers, a pattern consistent across different age groups studied (two and three months).
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Mother Interaction: While boy babies smile more at their mothers at two months old, this difference diminishes by three months. At three months, they smile approximately equally at both mothers and strangers.
This data highlights a clear distinction: girl babies show a stronger tendency towards smiling, particularly in novel social situations. This behavioral difference warrants further investigation into the underlying reasons, potentially including hormonal influences, or early social development patterns.