as noted above, the psycholinguist addresses the question of how the mentally represented grammar is employed in the production and comprehension of speech(linguistic performance).
the most direct way to approach this relationship is to adopt the hypothesisi that a generative grammar can simply be regarded as itself providing an account of how we understand and produce sentences in real time. From the point of view of languge comprehension, this gives rise to the following model. where the input is a stretch of spoken or written language such as a particular sentence