+1 Recommend
0 collections
      • Record: found
      • Abstract: found
      • Article: not found

      On the basis for the agrammatic's difficulty in producing main verbs.

      Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

      Speech Production Measurement, Adult, Anomia, diagnosis, Aphasia, Brain Damage, Chronic, Humans, Middle Aged, Neuropsychological Tests, Phonetics, Semantics, Speech Perception

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          Current theories of agrammatism do not provide a clear explanation for the co-occurrence of omission of grammatical markers and main verbs in this disorder. This study tested the hypothesis that the two symptom features have distinct underlying causes. Specifically, that the omission of main verbs in agrammatic speech is caused, at least in part, by a lexical (as opposed to a syntactic) deficit. Agrammatic and anomic aphasics and normal controls were given an object and action naming test. Agrammatic patients showed a marked impairment in naming actions in contrast to anomic aphasics and normal controls who named actions better than objects. The action naming impairment in agrammatic patients was interpreted as evidence for the lexical deficit hypothesis of verb omission in the speech of these patients and as a demonstration that agrammatism is a heterogeneous disorder that implicates damage to both lexical and syntactic mechanisms.

          Related collections

          Author and article information



          Comment on this article