IB Psychology HL & SL Topic 9 — Exam Guidance Paper 1 Exam skill ~8 min read

Writing a Strong SAQ in Paper 1

Short-answer questions look easy and quietly lose people a lot of marks. Four marks is not four sentences of everything you know; it is one idea, properly developed. Six marks in Section B is the same idea plus a scenario you must actually use.

📘 What you need to know

The shape of a 4-mark answer

Four marks, four moves 1. DEFINE say what it is 2. DEVELOP say how it works 3. EXAMPLE make it concrete 4. EFFECT link it to behaviour Most lost marks are step 2 and step 4, not step 1. Students define the term well, give an example, and then stop without ever saying what it does to behaviour.
Four short paragraphs, or one tight paragraph with four moves in it. Either is fine; the moves are what matter.

Describe and explain are not the same job

The two command terms that matter most DESCRIBE EXPLAIN give a detailed account give reasons and causes Name the parts of the theory Say what each part does Give the effect on behaviour answers WHAT Everything describe needs Plus why one thing leads to the next answers WHY and HOW Every explain answer contains a cause-and-effect sentence.
A quick test: if you can delete every “because”, “so” and “which leads to” from your explain answer and it still reads fine, you have described instead.
Take classical conditioning. Describing it means naming the unconditioned stimulus, the conditioned stimulus, the conditioned response and extinction. Explaining it means saying why repeated pairing makes a neutral stimulus start producing the response — and then showing that chain in an example, such as a child developing a fear of buttons after choking on one.

Section B: the scenario is the answer

Section B hands you a study or situation and asks you to apply psychology to it. The command terms are all AO2: analyse, apply, comment, design, explain, interpret, predict, suggest. Every one of them assumes you are working on the case in front of you.

🧩 A reliable shape for a 6-mark Section B answer

  1. Anchor in the scenario. First sentence names what the study or situation did.
  2. Bring in the psychology that explains it, defined briefly.
  3. Give reasons or possible causes for what the scenario found.
  4. Show how it applies to behaviour more widely, or what it could be used for.
  5. Check the scenario appears at least twice in your answer. If it appears once, you have written Section A.

Worked examples

WORKED EXAMPLE

Explain the role of classical conditioning in behaviour. [4 marks]

1 Define Classical conditioning is learning by association: a neutral stimulus is repeatedly paired with an unconditioned stimulus that already produces a response. 2 Develop — the why Because the pairing is repeated, the neutral stimulus starts to predict the unconditioned stimulus, so it becomes a conditioned stimulus and produces the response on its own. 3 Example A child who chokes on a button feels fear; buttons are paired with that fear, so buttons alone later trigger it. 4 Effect The behaviour becomes automatic and can persist long after the original event, though it fades through extinction if the pairing stops. Defined, explained, illustrated, linked Notice how short it is. Four marks does not need a page.
WORKED EXAMPLE

In a study, MRI scans were used to determine grey matter density. Explain the use of brain-imaging techniques in understanding human behaviour. [6 marks]

Anchor in the scenario In this study MRI produced detailed structural scans, allowing grey matter density to be measured in specific brain regions. Bring in the psychology Brain imaging lets researchers link structure or activity to behaviour without opening the skull, which makes it non-invasive and repeatable. Give reasons Greater grey matter density in a region may result from learning and repeated use, since experience can change brain structure. Apply it This supports neuroplasticity, which is used in health settings to design rehabilitation after brain damage. One line of caution A scan shows structure, not why a person behaves as they do, so the link to behaviour is inferred rather than observed. Scenario used throughout, not just mentioned You are not required to bring your own studies here. The scenario is the study.

💡 Exam tip

⚠ Common mix-up

Up next: Writing a Strong ERQ in Paper 1 — the 15-mark concept-based essay, and the structure that keeps it from turning into a list of studies.

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