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Behaviour operates on the environment to bring about favorable consequences or avoid adverse ones. These same ideas of operant conditioning can also be applied to language acquisition because Skinner believed that language could be treated like any other kind of cognitive behaviour. According to the behaviourist theory, language learning is a process of habit formation that involves a period of trial and error where the child tries and fails to use correct language until it succeeds.
Piaget's cognitive theory states that, children's language reflects the development of their logical thinking and reasoning skills in stages, with each period having a specific name and age reference. There are four stages of Piaget's cognitive development theory, each involving a different aspect of language acquisition: 1  Sensory-Motor Period- (birth to 2 years) Children are born with action schemas to assimilate information about the world such as sucking or grasping.