Working memory and focal attention.

Measures of retrieval speed indicated that only a small subset of representations in working memory falls within the focus of attention. An n-back task, which required tracking an item 1, 2, or 3 back in a sequentially presented list, was used to examine the representation and retrieval of recent events and how control processes can be used to maintain an item in focal attention while concurrently processing new information. A speed-accuracy trade-off procedure was used to derive measures of the availability and the speed with which recent events can be accessed. Results converge with other time course studies in demonstrating that attention can be concurrently allocated only to a small number of memory representations, perhaps just 1 item. Measures of retrieval speed further demonstrate that order information is retrieved by a slow search process when an item is not maintained within focal attention.

[1]  David A. Caulton,et al.  Recognition Memory and Modality Judgments: A Comparison of Retrieval Dynamics , 1997 .

[2]  Mark C. Detweiler,et al.  The Role of Practice in Dual-Task Performance: Toward Workload Modeling a Connectionist/Control Architecture , 1988, Human factors.

[3]  B. J. Casey,et al.  Activation of the prefrontal cortex in a nonspatial working memory task with functional MRI , 1994, Human brain mapping.

[4]  D. Rubin,et al.  The Precise Time Course of Retention , 1999 .

[5]  R. Ratcliff,et al.  Connectionist and diffusion models of reaction time. , 1999, Psychological review.

[6]  John Morton,et al.  Repeated items and decay in memory , 1968 .

[7]  R. Shiffrin,et al.  A retrieval model for both recognition and recall. , 1984, Psychological review.

[8]  A. W. Melton,et al.  Coding Processes in Human Memory. , 1973 .

[9]  Amy Wenzel,et al.  One hundred years of forgetting: A quantitative description of retention , 1996 .

[10]  John A. Michon,et al.  Time, Mind, and Behavior , 1985, Springer Berlin Heidelberg.

[11]  S. Sternberg.  High-Speed Scanning in Human Memory , 1966, Science.

[12]  A V Reed,et al.  Speed-Accuracy Trade-Off in Recognition Memory , 1973, Science.

[13]  Barbara Anne Dosher,et al.  Forgetting rates are comparable in conscious and automatic memory : A process-dissociation study , 1999 .

[14]  W. A. Wickelgren.  Single-trace fragility theory of memory dynamics , 1974, Memory & cognition.

[15]  William K. Estes,et al.  Memory for Temporal Information , 1985 .

[16]  B. Dosher,et al.  Serial position and set size in short-term memory: The time course of recognition , 1989 .

[17]  A. J. Flexser,et al.  How frequency affects recency judgments: a model for recency discrimination. , 1974, Journal of experimental psychology.

[18]  Robert H. Logie,et al.  Memory in everyday life , 1993 .

[19]  Wayne A. Wickelgren,et al.  Speed-accuracy tradeoff and information processing dynamics , 1977 .

[20]  Andrew R. A. Conway,et al.  Working memory and retrieval: a resource-dependent inhibition model. , 1994, Journal of experimental psychology. General.

[21]  B A Dosher,et al.  A comparison of forgetting in an implicit and explicit memory task. , 1997, Journal of experimental psychology. General.

[22]  J. Jonides,et al.  Storage and executive processes in the frontal lobes. , 1999, Science.

[23]  J. Richardson,et al.  Working Memory and Human Cognition , 1996 .

[24]  Barbara Anne Dosher,et al.  Output loss or rehearsal loop? Output-time versus pronunciation-time limits in immediate recall for forgetting-matched materials. , 1998, Journal of experimental psychology. Learning, memory, and cognition.

[25]  E B Ryan,et al.  Cognitive mediation of adult age differences in language performance. , 1995, Psychology and aging.

[26]  A. V. Reed,et al.  List length and the time course of recognition in immediate memory , 1976, Memory & cognition.

[27]  L. Squire.  Encyclopedia of learning and memory. , 1992 .

[28]  Edward E. Smith,et al.  Working Memory: A View from Neuroimaging , 1997, Cognitive Psychology.

[29]  M. Posner,et al.  Retention of visual and name codes of single letters. , 1969, Journal of experimental psychology.

[30]  Barbara Anne Dosher,et al.  The focus of attention across space and across time , 2001, Behavioral and Brain Sciences.

[31]  Michael J. Hacker.  Speed and accuracy of recency judgments for events in short-term memory. , 1980 .

[32]  B. McElree,et al.  Attended and Non-Attended States in Working Memory: Accessing Categorized Structures , 1998 .

[33]  Roger Ratcliff,et al.  A Theory of Memory Retrieval. , 1978 .

[34]  N. Cowan.  Attention and Memory: An Integrated Framework , 1995 .

[35]  D. Yntema,et al.  Recall as a search process , 1963 .

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

[37]  Brian McElree,et al.  Accessing short-term memory with semantic and phonological information: A time-course analysis , 1996, Memory & cognition.

[38]  B. Murdock,et al.  Memory for Serial Order , 1989 .

[39]  Tim Curran,et al.  Retrieval dynamics of recognition and frequency judgments: Evidence for separate processes of familiarity and recall. , 1994 .

[40]  David A. Caulton,et al.  Retrieval dynamics in recognition and list discrimination: Further evidence of separate processes of familiarity and recall , 1998, Memory & cognition.

[41]  James T. Townsend,et al.  The Stochastic Modeling of Elementary Psychological Processes , 1983 .

[42]  M. B. Edwards,et al.  Comparison of the retrieval of item versus spatial position information , 1997 .

[43]  Barbara Anne Dosher,et al.  Retrieval Dynamics of Priming in Recognition Memory: Bias and Discrimination Analysis , 1989 .

[44]  James V. Hinrichs,et al.  A two-process memory-strength theory for judgment of recency. , 1970 .

[45]  B McElree,et al.  Sentence Comprehension Is Mediated by Content-Addressable Memory Structures , 2000, Journal of psycholinguistic research.

[46]  Douglas L. Hintzman,et al.  Judgments of frequency and recognition memory in a multiple-trace memory model. , 1988 .

[47]  Tim Shallice,et al.  Neuropsychological impairments of short-term memory: The impairment of auditory–verbal short-term storage , 1990 .

[48]  G. Vining,et al.  Data Analysis: A Model-Comparison Approach , 1989 .

[49]  B B Murdock,et al.  TODAM2: a model for the storage and retrieval of item, associative, and serial-order information. , 1993, Psychological review.

[50]  B. G. Rule,et al.  Adult age differences in working memory. , 1989, Psychology and aging.

[51]  Roger Ratcliff,et al.  A note on modeling accumulation of information when the rate of accumulation changes over time , 1980 .

[52]  L Hasher,et al.  Automatic processing of fundamental information: the case of frequency of occurrence. , 1984, The American psychologist.

[53]  W. Kintsch,et al.  Memory and cognition , 1977 .

[54]  Tim Shallice,et al.  Neuropsychological impairments of short-term memory , 1992 .

[55]  Neil A. Macmillan,et al.  Detection Theory: A User's Guide , 1991 .

[56]  B. McElree,et al.  Syntactic and Thematic Processing in Sentence Comprehension: Evidence for a Temporal Dissociation , 1995 .

[57]  Barbara Anne Dosher,et al.  The retrieval of sentences from memory: A speed-accuracy study , 1976, Cognitive Psychology.

[58]  Michel Treisman,et al.  Memory scanning: A comparison of the dynamic stack and exhaustive serial scan models, with an extension of the latter , 1987 .

[59]  B. McElree,et al.  The locus of lexical preference effects in sentence comprehension , 1993 .

[60]  B. Dosher,et al.  Serial Retrieval Processes in the Recovery of Order Information , 1993 .

[61]  Hugh Garavan,et al.  Serial attention within working memory , 1998, Memory & cognition.

[62]  W. Hockley.  Analysis of response time distributions in the study of cognitive processes. , 1984 .

[63]  Lynn Hasher,et al.  Working Memory and Aging: Current Status of the Inhibitory View , 1996 .

[64]  Albert T. Corbett,et al.  Priming and Retrieval from Short-Term Memory: A Speed Accuracy Trade-Off Analysis , 1980 .

[65]  Edward E. Smith,et al.  Dissociation of Storage and Rehearsal in Verbal Working Memory: Evidence From Positron Emission Tomography , 1996 .

[66]  B. Murdock.  A parallel-processing model for scanning , 1971 .

[67]  Wayne A. Wickelgren,et al.  The long and the short of memory. , 1973 .

[68]  B. Murdock.  A Theory for the Storage and Retrieval of Item and Associative Information. , 1982 .

[69]  Barbara Anne Dosher,et al.  The effects of delay and interference: A speed-accuracy study , 1981, Cognitive Psychology.

[70]  M. Carrasco,et al.  The temporal dynamics of visual search: evidence for parallel processing in feature and conjunction searches. , 1999, Journal of experimental psychology. Human perception and performance.

[71]  James S. Nairne,et al.  Short-Term/Working Memory , 1996 .

[72]  Robert G. Crowder,et al.  Short-term memory: Where do we stand? , 1993, Memory & cognition.

[73]  Edward E. Smith,et al.  Temporal dynamics of brain activation during a working memory task , 1997, Nature.

[74]  W. James,et al.  The Principles of Psychology. , 1983 .

[75]  S. Sternberg.  Memory Scanning: New Findings and Current Controversies , 1975 .

[76]  B. McElree,et al.  Structural and lexical constraints on filling gaps during sentence comprehension: A time-course analysis. , 1998 .

[77]  L L Jacoby,et al.  Isolating the contributions of familiarity and source information to item recognition: a time course analysis. , 1999, Journal of experimental psychology. Learning, memory, and cognition.

[78]  Paul Muter,et al.  Response latencies in discriminations of recency , 1979 .

[79]  John R. Anderson.  The Architecture of Cognition , 1983 .

[80]  Wayne A. Wickelgren,et al.  Trace resistance and the decay of long-term memory. , 1972 .

[81]  R. Engle.  Working Memory and Retrieval: An Inhibition-Resource Approach , 1996 .

[82]  S. Gronlund,et al.  Global matching models of recognition memory: How the models match the data , 1996, Psychonomic bulletin & review.