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ADHD glossary · Family perspectives

Short-term memory: brief retention and the working-memory boundary

Cowan uses short-term memory for briefly keeping a limited amount of information readily accessible. In his account, working memory also includes processes that use that information, while other researchers draw the boundary differently. [1]

By RDY Editorial · Prepared

General education and practical perspectives. Editorial standards.

The attribution matters. This page offers a way to read the term within that account, not a universal diagram of separate boxes in the brain. It deliberately does not attach a number of seconds, a list length, or an assessment score to someone's everyday experience.

A room name between two desks

In this imagined scene, Ellis asks at a community center which room has the pottery display. The receptionist says “Maple Room.” Ellis keeps that room name in mind while walking to the nearby information desk, then asks where Maple Room is.

For this illustration, the narrow focus is the room name being retained briefly. A different question would concern using several pieces of information to compare routes or plan a visit. We do not need to decide that every action in the scene belongs exclusively to one memory category.

If Ellis asks for the room name again, the receptionist can repeat it or point to the printed program. Nothing in this page authorizes the receptionist to infer what Ellis heard, what was retained, or why another request was made.

Make the information request usable

A small optional request card might say: “Please give me the room name in writing; I will ask separately about the route.” It states the requested format without requiring a person to explain a diagnosis or demonstrate a difficulty.

Another version could be a note in a planning conversation:

  • Information needed now: the name of the destination.
  • Where it is written: the program beside the reception desk.
  • Separate question: which entrance leads there?

This is a description of available information, not a memory exercise. There is no instruction to remove the program, delay the answer, or see how much someone can repeat. The recipient can also prefer an entirely different format.

A request is not a quiz invitation

A partner could repeat a detail without asking the other person to prove they listened. A parent accompanying a child could let the child ask the receptionist directly, or ask on their behalf if requested. A sibling should not be given responsibility for testing how many instructions another child can hold.

Those options leave the actual question with the person who needs the information. They do not imply that a written room name changes memory capacity or that everyone needs a card.

Retention is the topic, not a score

Use this entry when a source is discussing brief retention. Use working memory when the question is about holding and using information, while checking how that particular source defines the relationship. Long-term memory belongs to the question of retained knowledge and earlier events, rather than just this moment's room name.

A glossary comparison cannot determine whether any real person has a memory difficulty. We also do not use an ordinary request for repetition to infer effort, interest, intelligence, or reliability. The useful outcome here is a clearer term and a clear information request, not a home test.

Source

[1] Cowan N. What are the differences between long-term, short-term, and working memory?. Progress in Brain Research. 2008;169:323–338. doi: 10.1016/S0079-6123(07)00020-9. PMID: 18394484. Accessed September 6, 2026, PMC author manuscript, “Description of three kinds of memory” and “The short-term memory/working memory distinction.” Supports [1], including the attribution and model boundary; no capacities, timings, or test instructions adopted.

Sources and what they support

These sources support the specific statements identified below. Our practical exercises are suggestions to consider, not evidence of a treatment effect.

  1. Nelson Cowan.

    What are the differences between long-term, short-term, and working memory? — Elsevier / Academic Press — Progress in Brain Research; author manuscript in PubMed Central

    Source type: professional reference.

    Accessed .

    Source check, September 6, 2026: Scoped source check. Passage: Description of three kinds of memory, short-term-memory paragraph and paragraph beginning What is clear from my definition; The short-term memory/working memory distinction. Limits: Source-scoped terminology only. Temporal decay, numerical capacity limits, neural mechanisms, intellectual aptitude, developmental differences, training and clinical examples are outside the adopted claim. This is a historical review, not an up-to-date synthesis of all memory models.

    DOI: 10.1016/S0079-6123(07)00020-9. PMID: 18394484.

    Supports: Cowan uses short-term memory for briefly keeping a limited amount of information readily accessible. In his account, working memory also includes processes that use that information, while other researchers draw the boundary differently.

    Correction check: No correction notice was present in the inspected PMC material. A DOI-specific correction/erratum/retraction search restricted to PubMed and ScienceDirect returned original article records, not an identified correction. No exhaustive bibliographic or reference-by-reference audit was performed; absence of a surfaced notice is not a clean-status certification.

Updates and corrections

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