Effects of age, domain, and processing demands on memory span: Evidence for differential decline

被引:102
作者
Myerson, J [1 ]
Emery, L [1 ]
White, DA [1 ]
Hale, S [1 ]
机构
[1] Washington Univ, Dept Psychol, St Louis, MO 63130 USA
关键词
D O I
10.1076/anec.10.1.20.13454
中图分类号
B844 [发展心理学(人类心理学)];
学科分类号
040202 ;
摘要
Analysis of cross-sectional data from the normative sample of the Wechsler Memory Scale - Third Edition (WMS-III) revealed different patterns of age-related differences in memory span measures depending on the type of memory item, processing demands, and the age of the older adult group. Regression of memory span on age revealed that the slope for Spatial Span raw scores was significantly more negative than the slope for Digit Span raw scores. There was no significant difference, however, either between the slopes for forward and backward Digit Span or between the slopes for forward and backward Spatial Span. Regression of Letter-Number Sequencing raw scores on age showed a distinctive, curvilinear pattern. Taken together, the present findings suggest that at least two mechanisms are involved in age-related differences in memory span. One mechanism, associated with a relatively linear decrease in memory span as a function of age, may differentially affect the storage of different types of information (e.g., sequences of digits vs. spatial locations). The other mechanism, evidenced by the curvilinear trend in Letter-Number Sequencing scores, may be tentatively attributed to a decline in executive aspects of working memory that becomes increasingly pronounced with age.
引用
收藏
页码:20 / 27
页数:8
相关论文
共 26 条
[1]   EFFECTS OF INCREASED PROCESSING DEMANDS ON AGE-DIFFERENCES IN WORKING MEMORY [J].
BABCOCK, RL ;
SALTHOUSE, TA .
PSYCHOLOGY AND AGING, 1990, 5 (03) :421-428
[2]  
Baddeley A., 1986, WORKING MEMORY
[3]   INTER-SET VARIABILITY ON RAVEN COLORED PROGRESSIVE MATRICES AS AN INDICATOR OF SPECIFIC ABILITY DEFICIT IN BRAIN-LESIONED PATIENTS [J].
COSTA, LD .
CORTEX, 1976, 12 (01) :31-40
[5]   ADULT AGE-DIFFERENCES IN WORKING MEMORY [J].
DOBBS, AR ;
RULE, BG .
PSYCHOLOGY AND AGING, 1989, 4 (04) :500-503
[6]  
Dolman R, 2000, BRAIN COGNITION, V43, P164
[7]   Working memory, short-term memory, and general fluid intelligence: A latent-variable approach [J].
Engle, RW ;
Tuholski, SW ;
Laughlin, JE ;
Conway, ARA .
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-GENERAL, 1999, 128 (03) :309-331
[8]   Effect of age on forward and backward digit spans [J].
Gregoire, J ;
VanderLinden, M .
AGING NEUROPSYCHOLOGY AND COGNITION, 1997, 4 (02) :140-149
[9]   Experimental evidence for differential slowing in the lexical and nonlexical domains [J].
Hale, S ;
Myerson, J .
AGING NEUROPSYCHOLOGY AND COGNITION, 1996, 3 (02) :154-165
[10]   Visuospatial imagery is a fruitful strategy for the digit span backward task: a study with near-infrared optical tomography [J].
Hoshi, Y ;
Oda, I ;
Wada, Y ;
Ito, Y ;
Yamashita, Y ;
Oda, M ;
Ohta, K ;
Yamada, Y ;
Tamura, M .
COGNITIVE BRAIN RESEARCH, 2000, 9 (03) :339-342