ABSTRACT
Language, thought, and categorisation are all manifestly intertwined. This chapter discusses how language is related to the rest of cognition, both in terms of how cognitive and language development are related and in terms of adults and children. Lev Vygotsky saw a more complex relation between language and cognition. He stressed the importance of the social and cultural contexts in which interaction and development take place. Vygotsky recognised that infants have developed cognitively before they begin to use language. The development of language doesn't depend on cognitive development. Several evidence shows that language facilitates and distorts reasoning and memory. Languages that have three colour terms have names corresponding to black, white, and red. People speak different dialects, but there's no evidence that any dialect is impoverished, or restricts thought, or that some form of language is better than others.
