ABSTRACT
This chapter argues that the rigid distinctions of the classical period between free and bound grammatical morphemes and deletion and substitution errors are no longer held. The classical characterization of agrammatism did not distinguish between the different expressions of the morphological phenomena inflections attached to nouns, verbs and adjectives, and free standing grammatical morphemes and clitics. Kleist differentiated between agrammatism associated with Broca's aphasia and frontal damage, and the deletion of free and bound grammatical morphemes, and paragrammatism associated with Wernicke's aphasia, posterior damage. The percentage of omission errors was indeed considerably higher in the case of free standing grammatical morphemes. But substitution errors were also made, and patients who made many substitution errors on free standing grammatical morphemes similarly committed many such errors on bound grammatical morphemes. The final word in relation to omission vs. substitution errors was from Grodzinsky argued that whether or not a grammatical morpheme was deleted or substituted was language dependent.
