Beyond resources: Formal models of complexity effects and age differences in working memory

We explore several alternative formal models of working memory capacity limits and of the effect of ageing on these capacity limits. Three models test variations of resource accounts, one assumes a fixed number of free slots in working memory, one is based on decay and processing speed, one attributes capacity limits to interference, and one to crosstalk between associations of content and context representations. The models are evaluated by fitting them to time–accuracy functions of 16 young and 17 old adults working on a numerical memory-updating task under varied memory-load conditions. With increasing complexity (i.e., memory load), both asymptotic accuracy and the rate of approach to the asymptote decreased. Old adults reached lower asymptotes with the more complex tasks, and had generally slower rates. The interference model and the decay model fit the individual time–accuracy functions reasonably well, whereas the other models failed to account for the data. Within the interference model, age effects could be attributed to the older adults' higher susceptibility to interference. Within the decay model, old adults differed from young adults by a higher degree of variability in the activation of working memory contents.

[1]  T. Salthouse.  Why do adult age differences increase with task complexity , 1992 .

[2]  R. L. Babcock.  Analysis of Adult Age Differences on the Raven's Advanced Progressive Matrices Test , 1994 .

[3]  Lynn Hasher,et al.  Working Memory, Comprehension, and Aging: A Review and a New View , 1988 .

[4]  Malcolm D. Arnoult,et al.  Ageing And Human Skill , 1959 .

[5]  R Kliegl,et al.  Sequential and coordinative complexity in time-accuracy functions for mental arithmetic. , 1997, Psychology and aging.

[6]  James L. McClelland.  On the time relations of mental processes: An examination of systems of processes in cascade. , 1979 .

[7]  R. Engle,et al.  Individual differences in working memory capacity and what they tell us about controlled attention, general fluid intelligence, and functions of the prefrontal cortex. , 1999 .

[8]  R Kliegl,et al.  Sequential and coordinative complexity: age-based processing limitations in figural transformations. , 1993, Journal of experimental psychology. Learning, memory, and cognition.

[9]  G D Brown,et al.  Oscillator-based memory for serial order. , 2000, Psychological review.

[10]  S. Breckler.  Applications of covariance structure modeling in psychology: cause for concern? , 1990, Psychological bulletin.

[11]  D. Norris,et al.  THE QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 1996, 49A (1), 80 ± 115 Unchained Memory: Error Patterns Rule out Chaining Models of Immediate Serial Recall , 2022 .

[12]  P. Allen.  On age differences in processing variability and scanning speed. , 1991, Journal of gerontology.

[13]  Raymond J. Shaw,et al.  Effects of adult age on structural and operational capacities in working memory. , 1991, Psychology and aging.

[14]  C. Lebiere,et al.  The Atomic Components of Thought , 1998 .

[15]  N. Burgess.  Memory for Serial Order : A Network Model of the Phonological Loop and its Timing , 1999 .

[16]  Patrick C. Kyllonen,et al.  Reasoning ability is (little more than) working-memory capacity?! , 1990 .

[17]  T. Salthouse.  The processing-speed theory of adult age differences in cognition. , 1996, Psychological review.

[18]  S. Phillips,et al.  Processing capacity defined by relational complexity: implications for comparative, developmental, and cognitive psychology. , 1998, The Behavioral and brain sciences.

[19]  G. Loftus.  On interpretation of interactions , 1978 .

[20]  J. Cerella.  Information processing rates in the elderly. , 1985, Psychological bulletin.

[21]  Randall W. Engle,et al.  Working-memory capacity as long-term memory activation: An individual-differences approach. , 1993 .

[22]  O. Wilhelm,et al.  Working memory capacity - facets of a cognitive ability construct , 2000 .

[23]  Robbie Case,et al.  Intellectual development : birth to adulthood , 1985 .

[24]  M. Just,et al.  From the SelectedWorks of Marcel Adam Just 1992 A capacity theory of comprehension : Individual differences in working memory , 2017 .

[25]  C Kaernbach,et al.  Simple adaptive testing with the weighted up-down method , 1991, Perception & psychophysics.

[26]  Karen Z. H. Li,et al.  Selection from Working Memory: On the Relationship between Processing and Storage Components , 1999 .

[27]  John R. Anderson,et al.  Working Memory: Activation Limitations on Retrieval , 1996, Cognitive Psychology.

[28]  A. Welford,et al.  Ageing and human skill , 1958 .

[29]  Andrew R. A. Conway,et al.  Individual differences in working memory capacity: more evidence for a general capacity theory. , 1996, Memory.

[30]  Cynthia P. May,et al.  Inhibitory control, circadian arousal, and age. , 1999 .

[31]  R. Kliegl,et al.  Time-Accuracy Functions for Determining Process and Person Differences: An Application To Cognitive Aging , 1994, Cognitive Psychology.

[32]  M. Byrne.  Taking a computational approach to aging: the SPAN theory of working memory. , 1998, Psychology and aging.

[33]  Michael Matessa,et al.  A Production System Theory of Serial Memory , 1997 .

[34]  J. S. Nairne.  A feature model of immediate memory , 1990, Memory & cognition.

[35]  T. Salthouse.  Mediation of Adult Age Differences in Cognition by Reductions in Working Memory and Speed of Processing , 1991 .

[36]  D. Navon.  Resources—a theoretical soup stone? , 1984 .

[37]  Timothy A. Salthouse,et al.  The aging of working memory. , 1994 .

[38]  R. Propper,et al.  A molar entropy model of age differences in spatial memory. , 1998, Psychology and aging.

[39]  N. Cowan.  The magical number 4 in short-term memory: A reconsideration of mental storage capacity , 2001, Behavioral and Brain Sciences.

[40]  A. Baddeley,et al.  Word length and the structure of short-term memory , 1975 .

[41]  B. Boruff,et al.  Short-term memory capacity: magic number or magic spell? , 1986, Journal of experimental psychology. Learning, memory, and cognition.

[42]  R. Henson.  Short-Term Memory for Serial Order: The Start-End Model , 1998, Cognitive Psychology.

[43]  R. Kliegl,et al.  Sequential and coordinative processing dynamics in figural transformations across the life span , 1996, Cognition.

[44]  John R. Anderson,et al.  A Production System Theory of Serial Memory , 1997 .

[45]  S. Griew,et al.  Ageing and Human Skill , 1958 .

[46]  G. A. Miller.  THE PSYCHOLOGICAL REVIEW THE MAGICAL NUMBER SEVEN, PLUS OR MINUS TWO: SOME LIMITS ON OUR CAPACITY FOR PROCESSING INFORMATION 1 , 1956 .

[47]  M. Humphreys,et al.  Creating proactive interference in immediate recall: Building a DOG from a DART, a mop, and a FIG , 1998, Memory & cognition.

[48]  R. L. Babcock,et al.  Analysis of adult age differences on the Raven's Advanced Progressive Matrices Test. , 1994, Psychology and aging.

[49]  David E. Kieras,et al.  A computational theory of executive cognitive processes and multiple-task performance: Part 2. Accounts of psychological refractory-period phenomena. , 1997 .

[50]  S Hale,et al.  Individual and developmental differences in working memory across the life span , 1999, Psychonomic bulletin & review.

[51]  Roberto Colom,et al.  Working memory and intelligence , 2003 .