why is social interaction important between children and adults and other children?

Answer 1

Children learn by observing others. This is how they acquire language, how they develop their cognitive processes and understand gender roles and social mores. Children who grow up in isolation have poor language skills and do not thrive. They are often emotionally disturbed, as physical contact is important for emotional security. Play is an important part of this process, as is early interaction with adults, e.g mimicking mother's facial expressions. See studies of feral children for effects of removing social interaction and Harlow's monkey experiment.

Answer 2

Building of social and communication skills. The interaction with other people especially parents, siblings, etc is very important as it shapes a person's personality, self perception and self esteem. Who you are today has a lot to do with the interactions you had as a child

Answer 3

Well, if children don't learn to communicate with other human beings, they won't learn to talk (speech / sign) and will be unable to live normal lives as they won't be able to interact with other humans.