1. Whether babies love to smile: Generally speaking, babies start to smile when they are 4 to 6 weeks old, and some children may smile earlier. At first, a baby's smile often appears during light sleep. As the baby grows older, the baby may giggle in his sleep.

Some experts who study child psychology have found that a baby's intellectual development can be roughly understood from his smile. Children who love to laugh have better intellectual development than children who don't love to laugh. If the baby still cannot laugh after 8 to 10 weeks of birth, there may be problems with intelligence.

2. Whether the baby can "follow people" with his eyes: The pupils of newborns respond to light, but because there are fewer cells in the macula area and the eye muscles are poorly adjusted, the vision is very weak and the range of vision is the smallest. The distance is 60 cm, and the vision is clearest within 20 cm, and it can be gazed for a short time.

At 4 to 6 weeks old, babies can follow moving objects with their eyes and turn 90 degrees in the horizontal direction. At 12 weeks old, babies will turn their heads toward their mothers when they hear their mother's voice. Between 12 and 16 weeks old, when you see an adult holding a bottle to feed him or her, you will open your mouth and wait. If the child still cannot "follow people" with his eyes at 6 months of age, it is possible that his intellectual development is abnormal.

3. Does the baby sleep too much? A newborn sleeps most of the day. As he grows up, his sleeping time becomes less and less, and his waking time becomes longer and longer. If the baby sleeps for too long, exceeds a certain limit, sleeps all day long, and has difficulty even feeding, it may be an intellectual problem.

4. Is the baby's movement development normal? Newly born babies will hold everything put in their hands. This is an instinctive reaction of humans. This is the grasp reflex. Only when the baby's grasping reflex disappears after 3 months of age can the baby consciously hold objects.

At this time they often lie on the bed and play with their hands. But after 6 months of age, most of them stop playing with their limbs. Children with abnormal intellectual development will still play with their hands after 6 months until 1 year old.

Babies who are 6 to 7 months old can bend down to pick up objects far away from themselves, and can pass objects between their hands; babies around 6 months old begin to chew food. , can eat biscuits by himself. 9-month-old babies can let go or throw objects at will, and often take pleasure in doing so. The above can also be used as a reference to understand the baby's intellectual development.

5. Is social development normal? After a baby is born, he does not know how to recognize other people. After 3 months, the baby begins to recognize people. When parents or close people approach, he or she often smiles to express happiness, and sometimes dances.

After the baby is 6 months old, he begins to show signs of timidity. He is afraid, avoids, and even cries when facing strangers. He often buries his face in his mother’s arms, but once he sees his relatives, he opens his arms. Wanting someone to hold him.

Extended information:

Methods that help the baby’s intellectual development:

1. Hold the object vertically: exercise the neck to gradually support the weight of the head. Look at toys that move and make sounds, and look at outdoor scenery to arouse your baby's interest in the scenery. Memorize the graphics and distinguish between new graphics that have been seen and new ones that have not been seen by extending the gaze time.

2. Conversation: Let the family talk to the baby when changing diapers, feeding and bathing, so that the baby can recognize the face and get to know the family. Touching the body, teasing, making eye contact, and the taste and temperature of breast milk will make the baby safer and more comfortable; hugging, lifting, changing positions, etc. will make the baby feel cared for and create trust and intimacy with parents.

3. Grasping and listening: Use soft sounding toys to tease the baby to grasp. Holding objects firmly is the first skill to exercise the hands. Musical rotating toys and music boxes allow babies to listen to wonderful music while paying attention to the toys, so as to review prenatal education music, consolidate music memory, and enlighten the right brain's ability to appreciate beauty. If not reviewed during infancy, the impact of prenatal education will disappear within half a year.

4. Mouth-mouth games: face to face and do things like opening your mouth, sticking out your tongue, smacking your tongue, etc. Newborn babies can suck, so their mouth movements are more flexible than other parts and they learn faster.

Practice imitation skills.

Ifeng.com - Five ways to identify the intelligence of your baby

Ifeng.com - These parent-child games will help your baby’s intellectual development