@article{LCNL:12, author={Amit Almor and Maryellen C. MacDonald and Daniel Kempler and Elaine S. Andersen and Lorraine K. Tyler}, year={2001}, month={02}, title={Comprehension of long distance number agreement in probable Alzheimer's Disease.}, journal={Language and Cognitive Processes}, volume={16}, pages={35-63}, abstract={Two cross-modal naming experiments examined the role of working memory in processing sentences and discourses of various lengths. In Exp 1, 10 memory impaired patients (aged 76-89 yrs) with probable Alzheimer's disease (AD) and 10 healthy elderly controls showed similar sensitivity to violations of subject-verb number agreement in a short sentence condition and similar degradation to this sensitivity in a long sentence condition. Performance in neither length condition correlated with performance on working memory tasks. In Exp 2, the same 10 AD Ss were less sensitive than the 10 controls to pronoun-antecedent number agreement violations in a short discourse condition, but neither group was affected by additional length. In this experiment, performance in both the short and the long conditions correlated with working memory performance. These results show that grammatical and discourse dependencies pose different memory and processing demands, and that these differences are not simply due to differences in the amount of intervening material between dependent words. Furthermore, while the working memory deficits characteristic of AD do not interfere with on-line grammatical processing within sentences, they do compromise on-line discourse processing across sentences.}, language={English}, keywords={role of working memory in processing sentences & observing grammar rules 76-89 yr olds with memory impairments & probable Alzheimer's disease; Alzheimers Disease; Grammar; Semantic Memory; Sentence Comprehension; Short Term Memory; Geriatric Patients; Sentence Structure}, issn={01690965}, URL={http://lcnl.wisc.edu/publications/archive/12.pdf}, }