What constitutes disruptive behaviour in young kids is very subjective. However, by looking deeper at your childs behaviour it will help you understand more about why they act in a certain way. Behaviour that can appear naughty or disruptive to you, is often just your childs way of communicating an unmet need as they try to figure out their way in the world.
Your child may attend an early childhood organisation where they are exposed to another language and wonder if it's good for them. Or you may be a parent speaking a language other than English and wonder if you should teach your child your home language, as well as English. So what do we know about second language acquisition and young children?