This study aimed at investigating the similarities and differences between Vygotsky's perspectives on child language development with nativism and behaviorism. Proposing the idea of the Zone of Proximal Development, Vygotsky emphasized the role of collaborative interaction, scaffolding, and guided participation in language learning. Nativists, on the other hand, believe in the existence of Language Acquisition Device. They maintain that language is innate and acquisition is instantaneous. They also believe that acquisition happens in spite of inadequate input. Behaviorists claim that nurture is crucial in the process of language development. They believe that language is taught through reinforcements in the environment. Children associate certain stimuli with certain behaviors and responses.