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Case file

Source Confusion

Filed under
What Should We Remember
Also recorded as
Source monitoring error

The charge

Source confusion is a memory error in which you correctly remember information but cannot accurately identify whether it came from direct experience, someone else, imagination, or another medium. It is a specific failure of tracking origin.


How it operates

People infer source from cues like vividness, fluency, and familiarity rather than replaying a perfect record. When those cues overlap across imagined, heard, and seen events, the brain can assign the wrong source.

Logged incidents

  1. Incident 01

    A founder thinks a user explicitly requested a feature, when in fact the idea came from an internal brainstorming session.

  2. Incident 02

    A manager believes a performance concern came from multiple peers, but it was mostly repeated from one initial comment.

  3. Incident 03

    A marketing team treats a rumor from social media as customer-validated insight because it was repeated often in meetings.

What to watch for

Be skeptical when you remember a point clearly but not how you learned it. Ask: "Did I observe this directly, infer it, or hear it from someone else?"

Recommended action

Apply source monitoring checks: note the modality, date, and original evidence for key claims. In postmortems, inspect the first appearance of an idea instead of relying on repeated retellings.

Known associates

Source of record

en.wikipedia.org

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