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Related Concept Videos

Sensory Memory01:14

Sensory Memory

Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
Working Memory01:24

Working Memory

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 information.
System of Memory01:23

System of Memory

Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

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 information more...
Long-Term Memory01:18

Long-Term Memory

Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Mnemonic Devices01:23

Mnemonic Devices

Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...

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Related Experiment Video

Updated: May 8, 2026

Eye Movement Monitoring of Memory
08:06

Eye Movement Monitoring of Memory

Published on: August 15, 2010

Large capacity temporary visual memory.

Ansgar D Endress1, Mary C Potter1

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology.

Journal of Experimental Psychology. General
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

Human temporary memory capacity is much larger than previously thought, holding many items without proactive interference. When proactive interference is present, capacity estimates align with traditional working memory limits.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • Traditional models suggest visual working memory (WM) capacity is limited to 3-4 items.
  • Many real-world cognitive tasks appear to necessitate larger temporary memory stores.
  • Previous research often involves conditions that may artificially limit observed capacity.

Purpose of the Study:

  • To investigate the true capacity of human temporary memory.
  • To identify factors that influence temporary memory capacity estimates.
  • To differentiate between general temporary storage and specific working memory limitations.

Main Methods:

  • Participants viewed rapid serial visual presentations of 5-21 familiar objects or words at high speeds (4-8 items/s).
  • Recognition memory was assessed using a single probe item.
  • Experiments manipulated the presence or absence of proactive interference by reusing items across trials.

Main Results:

  • Without proactive interference, large memory capacities were observed (e.g., 9.1 items for 21-item lists, 30.0 for 100-item lists), with no clear upper bound.
  • Memory traces showed rapid decay, becoming unstable within minutes.
  • Introducing proactive interference reduced capacity estimates to levels consistent with prior working memory research.

Conclusions:

  • Humans possess a substantial temporary memory capacity when proactive interference is minimized.
  • Proactive interference is a critical factor in explaining the low capacity estimates in traditional working memory studies.
  • The findings challenge the notion of severely limited temporary memory, suggesting a much larger capacity in naturalistic settings.