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Related Concept Videos

Working Memory01:24

Working Memory

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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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Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
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Clark Hull's drive-reduction theory, introduced in the 1940s and 1950s and often termed the "push theory" of motivation, provides a framework for understanding how biological and learned drives influence behavior. Hull suggested that motivation originates from the need to alleviate physiological tension caused by unmet biological necessities. The theory proposes that when a basic need, such as hunger or sleep, goes unfulfilled, it creates an internal imbalance. This imbalance, or...
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Retrieval01:12

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Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
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Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
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Motivation improves working memory by two processes: Prioritisation and retrieval thresholds.

John P Grogan1, Govind Randhawa1, Minho Kim2

  • 1Nuffield Department of Clinical Neurosciences, University of Oxford, UK.

Cognitive Psychology
|April 1, 2022
PubMed
Summary
This summary is machine-generated.

Motivation enhances working memory (WM) performance by improving item selection, not capacity or precision. This study reveals motivation influences retrieval speed-accuracy trade-offs for better recall.

Keywords:
MotivationRetrievalRewardShort-term memoryWorking memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Motivation influences cognitive performance by altering effort allocation.
  • Working memory (WM) is often viewed as having a fixed capacity, with motivation enabling prioritization of rewarded items.
  • Previous research suggests motivation impacts WM by prioritizing items, implying capacity limitations.

Purpose of the Study:

  • To investigate whether motivation can enhance working memory (WM) capacity or performance when all items are rewarded.
  • To determine the mechanisms underlying motivational improvements in WM, specifically examining memory precision, item selection, and processing stages.
  • To differentiate the effects of motivation on WM from those of unequal reward structures.

Main Methods:

  • Four experiments involving 30-34 participants were conducted.
  • Participants' working memory performance was assessed under varying motivational conditions, including scenarios with equally rewarded items.
  • Key metrics included memory precision, item selection accuracy, response times, and attention shifts.

Main Results:

  • Motivational improvements in WM were observed even when all items offered rewards.
  • Enhanced performance was attributed to better selection of the probed item, not increased memory precision or capacity.
  • Motivation slowed response times and influenced speed-accuracy trade-offs during retrieval, operating independently of encoding, maintenance, or attention shifts.

Conclusions:

  • Motivation enhances working memory (WM) recall through improved selection of the target item during retrieval.
  • Motivational benefits in WM do not stem from increased memory precision or capacity but from strategic adjustments in retrieval processes.
  • Motivation impacts the speed-accuracy trade-off in memory retrieval, leading to better recall outcomes.