Infancy
Emotional
A baby learns to show their feelings through crying when they are upset or uncomfortable and following your movements with their eyes when they are relaxed. Babies can feel interest, distress, disgust, and happiness and communicate them through facial expressions and body posture. There are three broad categories of temperaments in infants. Most of them have easy temperaments and are usually in good moods. Slow-to-warm-up babies respond slowly and quietly to discomfort. Infants with difficult temperaments engage in constant physical activity and are easily distracted.
Cognitive
A baby's brain can be helped to develop properly with positive interactions with the people around them. Soon after birth a baby learns their mother's voice and feels comfortable around it. Encourage healthy cognitive brain development with exaggerated syllables and simple sentences when you talk to a baby. Smell and taste are the most powerful senses at birth. They respond to loud noises and use their eyes to follow a face or a toy. It may not seem like it but in the first few weeks of a baby's life, their senses are working hard to help them develop ideas and concepts of the world around them.
Physical
A new born babies physical traits are not always what you would expect. when you first see them you may be concerned but don't worry it is completely normal!
*head may be elongated or misshapen
*babies will either have blue or brown eyes
*there will be wrinkles in skin
*skin will be a pinkish reddish color
*skin can be a yellow color
*legs will be bowed and feet may look pigeon toed.
Social
The social aspect of an infant is one of the last thinks that start to develope. Most people who study cild development will tell you hat a baby cannot make a "social smile" until * weeks of age. Mostly its just a reaction to something like gas.
A newborns socialization in mainly based around their mother or care giver. they will begin to recognize their mother ( or care giver ) and want to be with them. The main social tomes for an infant are around activities of feeding, sleeping, changing and body positioning.