Aphasia research and theoretical linguistics guiding each other

An elaboration on some loose ends in Grodzinsky's analysis shows that data from the field of aphasia contribute to the formulation of theoretical ling uistic principles, and provides extra arguments in favor of Grodzinsky's cl aim that linguistic theory is the best tool for the investigation of aphasi a. This illustrates and emphasizes the importance of communication between researchers in the field of (Broca's) aphasia and of theoretical linguistic s.