The theories of child development and speech acquisition describe how humans acquire grammatical structures, words, and expressions of child-directed speech. When we speak about vocabulary development, we are referring to the process through which children and young children grow to comprehend and convey spoken language during childhood and infancy. Many meanings exist for the word or phrase language. One of them refers to a communication system that transmits information from one person to another using words and complex sentences.
The manner in which a person learns terminology has long been the subject of discussion and speculation. Some thinkers argue that spoken language is acquired via a child’s upbringing (nurture). Others believe that Children are born with the natural aptitude to acquire a language skills, independent of their family or environment (nature). Here are given the major developmental theorists of the world.
Major Language Developmental Theorists:
When considering theorists and theories of speech development, B.F. Skinner, Noam Chomsky, Jean Piaget, and Lev Vygotsky are among the theorists who have made significant contributions to spoken language development.
Jean Piaget: Assimilation and Accommodation
Vygotsky: Zone of Proximal Development
B.F. Skinner: Operant Conditioning
Noam Chomsky: The Nativist Theory