Case assignment in agrammatism.

Area of Science:

• Linguistics
• Neurolinguistics
• Psycholinguistics

Background:

• Agrammatic speech involves omitting grammatical morphemes.
• Previous research suggests syntactic rules govern these omissions and substitutions.
• Case marking is crucial for sentence structure, with verbs assigning case to nouns.

Purpose of the Study:

• To analyze the omission of case markers in Dutch and German agrammatic aphasia patients.
• To test the hypothesis that nouns receive default nominative case or omit determiners when case assigners are absent.
• To evaluate these patterns within Chomsky's case theory framework.

Main Methods:

• Analysis of spontaneous speech from Dutch and German speakers with agrammatic aphasia.
• Application of Chomsky's (1986) case theory, focusing on verb-assigned case.
• Examination of noun phrases (NPs) and their case marking, particularly determiners.

Main Results:

• Observed omission patterns of case markers in agrammatic speech.
• Data supported the hypothesis that nouns default to nominative case or omit determiners when case assignment fails.
• Findings align with the difficulty agrammatic speakers experience with verb inflections and case assignment.

Conclusions:

• The omission of case markers in agrammatic aphasia is influenced by syntactic processes, specifically case assignment.
• The findings support the theoretical framework of case theory in explaining agrammatic speech patterns.
• This study provides evidence for the role of syntactic deficits in agrammatism, particularly concerning case marking.