What are the developmental standards for a four-month-old child?

From the moment a baby is born to the moment he turns 12, the baby changes rapidly. However, due to one problem or another, some babies' performances are surprising while others are worrying. So what are the developmental standards for a four-month-old baby? This is a question that many parents are concerned about because they hope that their children are healthy and smart. Next, we will ask relevant experts to introduce to us the specific requirements of the developmental standards for four-month-old children.

1. Physical appearance and growth indicators

By the end of the 4th month, the posterior fontanelle will have closed; the head will still look large because it grows faster than the rest of the body, which is perfectly normal; his body will soon catch up.

During this period, the baby's growth rate begins to slow down slightly compared to the first 3 months.

At four months:

The weight of male babies is 4.7-8.5 kg and the length is 58.3-69.1 cm;

The baby girl weighs 4.5-7.7 kg and is 56.9-67.1 cm long.

2. Limb movement index

The baby can sit up and try to turn over by holding the hips. In the prone position, the baby can lift the whole body with the support of two hands; the baby can sit for ten to fifteen minutes with the head upright, stable and the back straight; when lying on the prone, the baby can raise the head to 90 degrees to the plane; when lying on the back, the baby can stretch the neck to reach the hands and feet; the baby can flex the muscles below the waist to a limited extent; the baby can raise the hips; the baby can roll from one side to the other when lying on the prone, and can roll from the prone position to the side or to the back.

3. Language proficiency indicators

At this stage, babies seem to be testing their vocal organs. At this stage, babies like to talk to adults and can talk to themselves and babble. Can shout or whisper, laugh loudly, make steady crying sounds, and imitate tones.

4. Visual indicators

When a child lies on his back, he will immediately pay attention to an object as soon as it passes over his feet. He will gradually learn to distinguish colors, and his preferred colors are red, yellow, green, orange, and blue. Decorations hung indoors and toys given to babies should be colorful, preferably red.

5. Auditory indicators

Able to distinguish different timbres and differentiate between male and female voices, and are very sensitive to the emotions expressed in language and can have different reactions. First play a female voice song for your baby. Once your baby gets "accustomed" to the song, immediately switch to a male voice and he will have a different reaction.

6. Tactile indicators

The development of the brain's nervous system gradually improves, the conditioned reflex reaction gradually disappears, and he will actively reach out and grab things that attract him. Play with your baby more often, use objects to tease your baby to grasp, and he will take the initiative to reach out and grasp.

The above are the specific requirements for the developmental standards of a four-month-old child. You can use these standards to carefully compare your baby's current situation, and you can understand your baby's current situation. At this stage, the most obvious thing should be the child's weight, so parents cannot blindly supplement their children's nutrition. They should arrange their children's diet reasonably to ensure that the children get nutrition without waste. I hope our babies can grow up healthily.