The ability to communicate emotions when still a baby helps with the shift from total dependence to autonomy. Interest expression encourages inquiry and intellectual growth. Social (intentional) smiles and other joyful expressions encourage interpersonal communication and wholesome attachment ties to primary caregivers.
While expressing anger conveys disapproval and displeasure, expressing grief promotes empathy and helpful behavior. Temperament or characteristic emotionality refers to an infant's distinctive propensity to feel and express certain emotions as well as the threshold for expressing such emotions.
The majority of researchers agree that social smiling and emotional indications of interest start to develop as early as six weeks old, and that neonatal (unintentional) grins are evident at birth. By the time they are four to five months old, newborns preferentially smile at known people and other babies, and their caretakers start having happy emotional interactions with them.
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Parenting & Relationships