The exchange of data, questions, analyses and hypotheses between linguistics and the cognitive psychology of language continues to be intense. The way in which psycholinguistics has been conceptualized in its short history, and the way in which the relationships between the two disciplines have been envisaged, has undoubtedly varied, and can be expected to change further. As we have indicated, these relations are nowadays most often established locally, in connection with the resolution of specific questions, and not within the framework of a very general theory of language.Psycholinguistics is the study of the cognitive processes involved in language processing and production. Founded in the 1950s, psycholinguistics draws on many disciplines, including language science, neurology and neurobiology, psychology and cognitive science. Language: is the ability to use a system of linguistic signs for communication and the expression of thought, which is private to humans. Language acquisition is the subject of psycholinguistics.