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smiling
facial expression
Also known as: smile
Learn about this topic in these articles:
happiness
infant behavioural development
- In human behaviour: The newborn infant
Smiling during infancy changes its meaning over the first year. The smiles that newborns display during their first weeks constitute what is called reflex smiling and usually occur without reference to any external source or stimulus, including other people. By two months, however, infants smile…
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