Modeling working memory: An interference model of complex span

@article{Oberauer2012ModelingWM,
  title={Modeling working memory: An interference model of complex span},
  author={Klaus Oberauer and Stephan Lewandowsky and Simon Farrell and Christopher Jarrold and Martin Greaves},
  journal={Psychonomic Bulletin \& Review},
  year={2012},
  volume={19},
  pages={779-819}
}
This article introduces a new computational model for the complex-span task, the most popular task for studying working memory. SOB-CS is a two-layer neural network that associates distributed item representations with distributed, overlapping position markers. Memory capacity limits are explained by interference from a superposition of associations. Concurrent processing interferes with memory through involuntary encoding of distractors. Free time in-between distractors is used to remove… Expand
A test of interference versus decay in working memory: Varying distraction within lists in a complex span task
Abstract We tested two competing explanations of the effect of processing on working memory. According to decay models, memory representations decay during processing and can be rehearsed orExpand
LOCAL INTERFERENCE IN STM 2
Evidence from the complex span task shows that maintenance of information in working memory is impaired by processing operations in between encoding memory items. We tested two competing explanationsExpand
Computational and behavioral investigations of the SOB-CS removal mechanism in working memory
TLDR
Simulations showed that SOB-CS overestimated the strength of removal which has to be much lower than expected to account for experimental data, and the aim of this study was to test this prediction with humans and simulations. Expand
The concentric model of human working memory: A validation study using complex span and updating tasks
Background. Working memory (WM) seems to be central to most forms of high-level cognition. This fact is fueling the growing interest in studying its structure and functional organization. TheExpand
Control of information in working memory: Encoding and removal of distractors in the complex-span paradigm
TLDR
Four experiments with complex-span tasks in which encoding of memory items alternates with processing of distractors support a computational model of complex span, SOB-CS, and rule out alternative explanations. Expand
Time and interference: Effects on working memory.
TLDR
Predictions from the time-based resource-sharing model with a classical verbal working memory task, where target and non-target information interfere strongly with each other, indicate the roles of both time and interference constraints in determining task performance. Expand
Interference control in working memory: Evidence for discriminant validity between removal and inhibition tasks
TLDR
The results provide tentative support for the notion that removal is not related to the interference-control processes assessed in inhibition tasks, and suggest that the removal process should be conceptualized as a process independent of the concept of inhibition. Expand
Simple measurement models for complex working-memory tasks.
TLDR
A framework for simple measurement models for working memory is introduced, and it is suggested that M3 offer a computationally efficient approach to identifying memory processes. Expand
Testing the Dual-Component Account of Working Memory with a Serial Recognition Task
This study tested the dual-component model of working memory (WM) against its unitary alternative. The former account predicts that WM consists of two functionally distinct mechanisms: a veryExpand
Interference between maintenance and processing in working memory: the effect of item-distractor similarity in complex span.
TLDR
Support for the assumption that distractors are encoded at the position of the preceding item comes from the finding that intrusions of distractors at recall tended to come from thePosition of the target item, showing that lack of distinctiveness also contributes to interference. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 181 REFERENCES
Modeling working memory: a computational implementation of the Time-Based Resource-Sharing theory
TLDR
A computational instantiation of the TBRS is presented and it is shown that it can handle most of the findings on which the verbal model was based and also shows that there are potential challenges to the model that await future resolution. Expand
A formal model of capacity limits in working memory
TLDR
A mathematical model of working-memory capacity limits is proposed on the key assumption of mutual interference between items in working memory, which was fit to time-accuracy data of memory-updating tasks from four experiments using nonlinear mixed effect models as a framework. Expand
Proactive interference and item similarity in working memory.
  • M. Bunting
  • Psychology, Medicine
  • Journal of experimental psychology. Learning, memory, and cognition
  • 2006
TLDR
Scores from PI-build trials, but not PI-release trials, correlated with RAPM and accounted for as much variance as unmodified tasks and elucidate a fundamental component of working memory span tasks. Expand
Complex span versus updating tasks of working memory: the gap is not that deep.
TLDR
It is concluded that updating tasks measure working memory equally well as complex span tasks. Expand
A temporal–contextual retrieval account of complex span: An analysis of errors
Abstract Complex working memory span tasks have been shown to predict performance on a number of measures of higher-order cognition including fluid abilities. However, exactly why performance onExpand
Interference-Based Forgetting in Verbal Short-Term Memory.
This article presents four experiments that tested predictions of SOB (Serial Order in a Box), an interference-based theory of short-term memory. Central to SOB is the concept of novelty-sensitiveExpand
Interference between maintenance and processing in working memory: the effect of item-distractor similarity in complex span.
TLDR
Support for the assumption that distractors are encoded at the position of the preceding item comes from the finding that intrusions of distractors at recall tended to come from thePosition of the target item, showing that lack of distinctiveness also contributes to interference. Expand
Turning simple span into complex span: Time for decay or interference from distractors?
TLDR
It is found that it is the type of distractors, not their total duration, that determines the success of encoding a list into STM, posing a challenge to temporal models of complex-span performance, such as the time-based resource sharing model. Expand
Modeling individual differences in working memory performance: a source activation account
TLDR
A computational model is proposed that accounts for differences inWorking memory capacity in terms of a quantity called source activation, which is used to maintain goal-relevant information in an available state and strengthens the interpretation of source activation as working memory capacity. Expand
The effects of processing time and processing rate on forgetting in working memory: Testing four models of the complex span paradigm
TLDR
Findings imply that a second rehearsal mechanism for verbal working memory, other than articulatory rehearsal, exists and that even continuous articulation does not prevent simultaneous refreshing of memory traces. Expand
...
1
2
3
4
5
...