Studies involving babies' brain waves show major changes in activity and rhythms at this age. These chemical changes in the brain indicate that a higher level of intelligence is taking over for those initial newborn reflexes.
Your baby is also discovering his hands and feet. The realization that they're extensions of himself leads to experiments with everything they're capable of doing. Bringing his hand to his mouth for a leisurely suck teaches him that he can satisfy himself.
When your baby accidentally swipes at the toys dangling overhead and they start to dance, he is learning that he can entertain himself; he is learning about the connection between cause and effect. Over time, these movements become more deliberate. Sometimes he will glance between the object and his hand. He also becomes aware of limitations, whimpering when he has dropped a toy that he desperately wanted to hold.
The first time he accomplishes any new physical trick, he may be so overwhelmed that he won't try it again for days. But he has plenty of time to work on these newfound skills, because he is awake and attentive up to three-quarters of an hour at a time.
At around three months, your baby starts developing a short-term memory. Studies have shown that infants at this age become bored with repeated visual signals. Three-month-olds also prefer human faces to pictures in which the faces have been scrambled out of their natural order. And they light up when they see mum and Dad. You may have noticed that when you leave his room, your baby whimpers until you return.
Our parenting advice is given as suggestions only. We recommend you also consult your healthcare provider, and urge you to contact them immediately if your question is urgent or about a medical condition.