There are certain norms for the development of babies between the ages of 0 and 3 months. The definition of a child's development occurs according to several principles, which include sensorimotor and emotional criteria.
Sensomotor development
From 0 to 1 month in a sitting position, the child is still unable to hold his head on his own, but lying on his stomach holds it for several minutes. His arms are in a twisted position almost all the time. There is a predominance of the flexor muscles over the extensor muscles.
In the period from 1 to 2 months, the baby already holds his head in a prone position for much longer, but his small hands move in chaotic activity. Also at this age, he has already learned a little to keep his head in a sitting position and is able to turn it to sound. In addition, the child manages to hold his gaze on an object for a few seconds, and he even tries to reach for it.
At the age of 3 months, the baby is already completely free to hold his head lying on his stomach and even sitting. He actively moves his arms and legs, and he does it with a certain purposefulness. He is trying to reach the nearest object, but, most likely, he has not succeeded yet.
Emotional development of the baby
In the period from 0 to 1 month, the child sleeps most of the day, but in a short time of wakefulness, he already shows some activity. Able to pay attention to sounds, makes his first eye contact for the first time. Calms down when they pick him up - this is his first conditioned reflex. His crying and screaming take the form of a special signal with the help of which you can understand that your baby is hungry, thirsty, sleepy, or needs to change a diaper.
At the age of 2 months, the child already smiles in response to the smile of an adult, calms down when he hears a familiar voice or sees a familiar face. He listens attentively to the speech of an adult and, imitating her, hums. He also expresses joy when he is picked up, played with or bathed.
At 3 months, the baby's revitalization complex blooms, he turns his head to voices or any other sounds. He distinguishes human speech from extraneous sounds, recognizes loved ones and tries to attract attention to himself, is capricious when he is left alone.
These are the basic norms for the development of an infant, but they should not be taken as mandatory signs of correct development and should not be worried if your child does not meet any parameters. Remember that every child is different and every toddler develops differently.
