4 month old baby smart symptoms

First, like to imitate, the baby has a natural ability, this ability to show the earlier, it represents the baby is smarter, close to the baby to do some actions, such as smile, tongue out, if he quietly looked at your face, it means that he has been silently imitating. Second, like to laugh, in the baby's development process, generally three months will be effective response, normal at this time the baby will laugh, and accompanied by flexible body movements, and some babies will even earlier, this is also the baby psychological activity begins. Infant reaction radical, sensitive movements, but also the baby's smart reaction. Third, like staring at things to see. Four, like to listen to the sound, can beat the toy to make a sound, the baby will often be very happy, and will know to find the sound of things and direction.Five, like sports, smart babies like sports, like stimulation, such as father difficult to lift high, this time the baby is often very excited.