The learning Acquisition device is not a physical device, it is a theory created by Noam Chomsky to describe the structure and processes within the brain that provide children with an innate ability to learn and understand the rules and formation of language in a way that means they are able to learn how to speak it without any formal teaching. It also explains why babies and children's language development and acquisition follows a similar pattern.
A theory that suggests children gradually acquire cognitive abilities and skills, not a staged model. Bruner stressed the importance of the social aspect of learning and the link between thought and language. The 3 modes are: Enactive, Iconic, Symbolic.
Operant conditioning theory (Burrhus Frederic Skinner)
A method of training that involves rewarding good behavior and punishing bad behavior to change behavior, as the child will associate certain behaviors as negative or positive