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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Age and individual differences in visual working memory deficit induced by overload.

Daisuke Matsuyoshi1, Mariko Osaka2, Naoyuki Osaka3

  • 1Department of Psychology, Graduate School of Letters, Kyoto University Sakyo, Japan ; Department of Integrative Physiology, National Institute for Physiological Sciences Okazaki, Japan ; Department of Psychology, Graduate School of Human Sciences, Osaka University Suita, Japan ; Research Center for Advanced Science and Technology, The University of Tokyo Komaba, Japan.

Frontiers in Psychology
|May 22, 2014
PubMed
Summary
This summary is machine-generated.

Visual working memory (VWM) capacity is not fixed. Low-capacity individuals show decreased VWM performance under overload, an effect worsened by aging and not improved by longer encoding times.

Keywords:
agingcapacity limitindividual differencesobject recognitionvisual working memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Aging Research

Background:

  • Previous research often assumed fixed working memory capacity.
  • Individual differences in working memory are increasingly recognized.

Purpose of the Study:

  • Investigate the stability of visual working memory (VWM) capacity.
  • Examine the influence of set size, age, and encoding time on VWM capacity.

Main Methods:

  • An individual differences approach was used.
  • Younger and older adults performed a change detection task with varying set sizes.
  • Encoding time was manipulated for low-capacity individuals.

Main Results:

  • Significant variability in VWM capacity was observed across individuals, ages, and set sizes.
  • Low-capacity individuals showed decreased VWM performance under overload.
  • Increased encoding time benefited younger, but not older, low-capacity adults.

Conclusions:

  • VWM capacity is not fixed and can decrease under overload conditions.
  • Aging exacerbates VWM deficits, particularly in low-capacity individuals.
  • Findings challenge the 'fixed slots' model of VWM.