Language Theories (cognitive, functional, etc.):
Theory of Cognitive Linguistic Development: According to this hypothesis, which is linked to Jean Piaget, linguistic development and cognitive development are strongly related. Language acquisition is influenced by distinct stages of cognitive development that children go through.
Language's communication purposes are the main emphasis of functional theories, such Michael Halliday's Systemic Functional Linguistics. It is believed that language serves as a mechanism for social functions and meaning expression.
Interactionist Viewpoints: The significance of social interaction in language acquisition is emphasized by interactionist ideas, such as those put forth by Jerome Bruner. Language is viewed as a tool for problem-solving and communication, with an emphasis on how dynamic language development is.