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NotesPsychologyTopic 3.4Cognitive processes: memory
Back to Psychology Topics
3.4.12 min read

Cognitive processes: memory

IB Psychology • Unit 3

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Contents

  • Memory is not a recording
  • How memory works — and fails
  • Evaluating memory research
In one line: Memory doesn't replay the past like a video — it rebuilds it, which is why it can be confidently wrong.

In the learning and cognition context, cognitive processes such as memory are a key area of study. Memory is a core cognitive process — and understanding it means seeing that it is reconstructive, not a perfect recording.

This links to the concepts of measurement (models make memory testable) and bias (schemas distort what we recall). Studies here are illustrative — use hypothetical or real examples in your own words.

Memory hook: Rebuild, don't replay. Memory is reconstructed, so it can be distorted.

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Key idea: Models describe memory's structure; schemas explain why recall is distorted.

Memory at a glance

1

The multi-store model

Memory as sensory, short-term and long-term stores, linked by attention and rehearsal — a testable cognitive model.

2

Reconstruction

Recall rebuilds an event using existing knowledge, so gaps get filled and details shift.

3

Schema distortion

Schemas make us add expected details and drop inconsistent ones — a source of memory bias.

Stores · Rehearsal · Schemas

Take an eyewitness to a robbery. The multi-store model describes how they encoded and stored the event; but at recall, their schema of 'a robbery' fills gaps — they may confidently 'remember' a weapon that wasn't there. Memory is reconstructive, so it is vulnerable to bias. This is why measuring memory carefully matters.

Go further — higher-level insight: Reconstruction explains why confidence isn't accuracy. A witness can feel certain yet be wrong, because the schema-filled memory feels just as vivid as a true one. This has huge real-world importance for eyewitness testimony — a strong applied point.

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Key idea: Memory research is well-evidenced and applicable but relies on models and lab tasks.

So memory research offers a powerful, testable account and has real-world value (e.g. for eyewitness testimony), but a good evaluation notes models simplify, schemas are hard to measure directly, and some lab tasks are artificial. The reconstructive nature of memory is well-supported and practically important.

Watch out: Vivid ≠ accurate. A detailed, confident memory can still be a reconstruction. Never treat certainty as proof of accuracy.

IB Exam Questions on Cognitive processes: memory

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How Cognitive processes: memory Appears in IB Exams

Examiners use specific command terms when asking about this topic. Here's what to expect:

Define

Give the precise meaning of key terms related to Cognitive processes: memory.

AO1
Describe

Give a detailed account of processes or features in Cognitive processes: memory.

AO2
Explain

Give reasons WHY — cause and effect within Cognitive processes: memory.

AO3
Evaluate

Weigh strengths AND limitations of approaches in Cognitive processes: memory.

AO3
Discuss

Present arguments FOR and AGAINST with a balanced conclusion.

AO3

See the full IB Command Terms guide →

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