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Details for article 6 of 6 found articles
| Title: |
Short-term forgetting: Comparisons between patients with dementia of the alzheimer type, depressed, and normal elderly |
| Author: |
Dannenbaum, Stephen E. Parkinson, Stanley R. Inman, Vaughan W. |
| Appeared in: |
Cognitive neuropsychology |
| Paging: | Volume 5 (1988) nr. 2 pages 213-233 |
| Year: |
1988-03-01 |
| Contents: |
Group by retention interval interactions in previous studies of patients with dementia of the Alzheimer type (DAT) and normal elderly have been interpreted as evidence for more rapid rates of forgetting by DAT patients (Corkin, 1982; Moms, 1986). Group by retention interval interactions, however, can reflect either differential registration or differential forgetting rates and ceiling effects in the performances of normal elderly in the previous studies preclude definitive interpretation. In the present study groups of patients with DAT, depressed, and normal elderly were tested in a Brown-Peterson task with zero and three interpolated distractor items. To tease apart the interpretations of registration and rate of forgetting, groups were equated for immediate recall differences by testing each individual in the Brown-Peterson task with to-be-remembered sequences equal to higher span of immediate memory. Memory spans were found to differ between all three groups (Normal > Depressed > DAT patients) and analysis of the Brown-Peterson task revealed a main effect of group and a group by retention interval interaction. No significant differences were found between groups in immediate recall but DAT patients recalled with lower accuracy than depressed and normal elderly in the delayed recall test. The delayed serial recall performance of depressed elderly was not significantly different from that of normal elderly. The present findings suggest that memories of patients with DAT are subject to a greater rate of loss than those of normal elderly and they are consistent with a model of DAT in which deficits occur at multiple loci in the memory system. The superior delayed recall performance of depressed elderly relative to patients with DAT suggests the diagnostic potential of the Brown-Peterson task in discriminating between these groups. |
| Publisher: |
Psychology Press |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 6 of 6 found articles
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