This investigation examines in aphasics the loss of the ability to relate words to their grammatical categories. It finds that recognition of grammatical categories is lost in all forms of aphasia studied, but that the loss is manifested differently for different types of aphasia quantitatively and qualitatively. (SCC)

Agrammatism, the disruption of the grammatical structure of speech, is studied in its accompaniment to aphasia. Since it occurs with all studied forms of aphasia, it is considered here a symptom typical to aphasia. It is also examined in relation to different kinds of aphasics. (SCC)

Considering Jakobson's theory that speech disorders involve defects in paradigmatic or in syntagmatic operations, and that these two categories result in different defects, this question was examined: does the syntagmatic group suffer from defects not only in contextual generation of active speech but also in comprehension of grammatical…