This paper investigates sensitivity to gender, person, and tense inflection in individuals with Alzheimer's disease (AD) in on-line and off-line tasks. Fourteen persons with AD and 14 matched controls participated in two studies: sensitivity to gender incongruity was tested in an on-line reading task and sensitivity to violation of tense and person was tested with an off-line grammaticality judgement test. Group performance was comparable on both tasks. It is argued that patients' preserved sensitivity to these features is primarily a function of the simplicity of the required operations. The notion of simplicity in this context is discussed and various parameters are offered for future investigation.
Bibliographical noteFunding Information:
This work was conducted in partial fulfillment of the degree of Doctor of Philosophy at the Hebrew University of Jerusalem, Israel. It was supported by doctoral grants to the first author from the Brookdale Institute of Gerontology and Human Development, and Eshel—The Association for the Planning and Development of Services for the Aged in Israel, as well as by a grant from the Israel Foundations Trustees. The authors wish to thank the participants and their caregivers for taking part in this project.
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- Alzheimer's disease
- Grammaticality judgement