Lesion location and aphasic syndrome do not tell us whether a patient will have an isolated deficit affecting the coindexation of traces

Data from published case and group studies bear on the trace deletion hypothesis. The deficit-lesion correlational literature does not support Grodzinsky's claim that lesions in and around Broca's area inevitably lead to comprehension deficits specifically related to coindexation of traces or his claim that other lesions spare this function.