Three-month-old baby performance
Usually, a three-month-old baby can recognize the bottle, turn to the sound it makes, and don't bow your head when lying on your back.
The performance of a four-month-old baby
After four months, the baby can sit up, turn his head freely, hold things with his hands, make noise and grasp things.
The performance of five to six-month-old babies
At the age of five to six months, the baby can turn over, stand, jump under his arm, grab things with his fingers and react when he hears a call.
How to judge the baby's intellectual development
If the baby's intelligence lags behind normal people, there are no obvious symptoms at first, which is difficult to detect. But it can be judged by the baby's behavior, but mothers should also pay attention to the fact that each baby's situation is different, and some babies are mentally retarded. It is best to take your baby to the hospital for physical examination regularly, and learn about your baby's development through communication with doctors to avoid mental retardation.
Performance of infants with mental retardation
Because mentally retarded babies often have poor memory, incoherent thinking, weak generalization ability, withdrawn and calm personality. The later symptoms will become more and more serious, affecting the baby's life.