According to the sociocultural perspective, the focus of early communication for infants younger than 12 months is Emotions.
Explanation:
A baby whose age is less than 12 months cannot speak,the baby can only express his emotions by either crying or smiling.
In case a infant has a stomach ace the baby will cry loudly ,the main reason being that the infant cannot express his problem by any other way ,the only way by which an infant communicates his problem to his mother is by expressing his emotions(Like Crying)