Structure in language. Creating form in talk

In psycholinguistics, the systematic study of language production has begun to take a place beside the study of language comprehension as a means to the end of understanding human language use. Because a major and very visible component of speaking a language is knowing how to create forms to carry messages, efforts to explain language production must confront long-standing questions about the relationship between structure and function in psychological explanation. One traditionally appealing view of that relationship in the realm of language is that sentence structures are associated with or reducible to the general forces of cognition that drive interpretation and communication. This article surveys some of the challenges to this view that emerge from the study of speech errors, and sketches the progress that has been made in developing an alternative view, renewing the argument that syntactic structures are necessary elements in an explanation of language use.