AP® Psychology · Unit 2 · Topic 2.7
The Misinformation Effect and Constructive Memory
Memory isn't replayed like a video, it's rebuilt each time you recall it, and new information or wording can slip into that rebuild. The misinformation effect happens when details from after an event get woven into your memory of the event itself.
Your brain doesn't store memories as finished recordings sitting in a drawer. Every time you remember something, you reconstruct it from fragments, filling gaps with logic, expectation, and whatever information is floating around at the moment of recall. This is constructive memory. It works well enough most of the time, but it means the memory you retrieve today can differ from the one you retrieved last year, because each retrieval is a new construction job rather than a replay.
This is exactly how the misinformation effect sneaks in. After witnessing an event, if someone feeds you a suggestive detail or a loaded word, that new information can get stitched into your reconstruction of the original event. You end up remembering the suggestion as if you saw it, not just as something you were told afterward. The distortion happens to the memory itself, not just to how you phrase your answer.
This connects to why confidence and vividness are terrible proof of accuracy. A reconstructed memory can feel completely real and be described in rich, convincing detail, even though parts of it were added after the fact. And because memories are rebuilt every time you access them, repeated retrieval and reconsolidation give misinformation more chances to seep in. Each retelling is a chance for the story to shift a little further from what actually happened, which is part of why eyewitness testimony is treated cautiously despite how sure a witness might sound.
Key terms
- Misinformation effect
- Exposure to misleading information after an event distorts a person's later memory of that event.
- Constructive memory
- The process of rebuilding a memory from fragments and current information each time it is retrieved, rather than replaying a fixed recording.
- Reconsolidation
- The process by which a retrieved memory is restored to storage, during which it can be altered or updated.
- Eyewitness testimony
- A witness's account of an event, which research shows can be unreliable despite feeling vivid and certain.
Watch it explained
- How it worksHow does a memory get rebuilt at retrieval rather than replayed?
- Worked exampleShow me how smashed versus hit changes the estimated speed in a car crash study.
- Common mistakeWhy isn't a vivid and confident memory therefore an accurate one?
- Going furtherWhat happens to a memory that is retrieved and reconsolidated many times?
Check yourself
End of topic.