IB Psychology HL · 2021 to 2025

Unit 1: Concepts

27 past paper questions from 20 papers across 9 exam sessions. See what repeats, then practise the same skills with AI marking.

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HL archive · 2021 to 2025

Unit 1: Concepts

Latest exam session: May 2025

questions
27
questions
papers
20
papers
exam sessions
9
exam sessions
micro-topics
5

Topics in Unit 1: Concepts

In syllabus order. The ring is the share of the marks each one carries.

Exam pattern

How often each micro-topic has been examined, year by year. Each label is explained under the grid.

Does it repeat?

Top 4 of 5 micro-topics for the next sitting. Numbers are questions per year.

fewermore

Micro-topic20212022202320242025
1.6.1Ethical treatment of participantsFrequently tested
2Ethical treatment of participants, 2021: 2 questions5Ethical treatment of participants, 2022: 5 questions4Ethical treatment of participants, 2023: 4 questions4Ethical treatment of participants, 2024: 4 questions5Ethical treatment of participants, 2025: 5 questions
1.1.4Reducing biasOccasional
·Reducing bias, 2021: 0 questions·Reducing bias, 2022: 0 questions·Reducing bias, 2023: 0 questions2Reducing bias, 2024: 2 questions·Reducing bias, 2025: 0 questions
1.4.3ValidityOccasional
·Validity, 2021: 0 questions·Validity, 2022: 0 questions2Validity, 2023: 2 questions·Validity, 2024: 0 questions1Validity, 2025: 1 question
1.4.2ReliabilityLess common
·Reliability, 2021: 0 questions·Reliability, 2022: 0 questions·Reliability, 2023: 0 questions1Reliability, 2024: 1 question·Reliability, 2025: 0 questions

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  • Frequently testedin at least a quarter of all papers, and still appearing in the last two years
  • Occasionalin about one paper in ten
  • Less commonin fewer than one paper in fifteen

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Questions on Unit 1: Concepts, by exam session

Which papers asked about Unit 1: Concepts, and which question numbers. Open a paper to see them highlighted.

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Frequently asked questions

Short answers about this page.

Which Psychology HL exam sessions are covered for Unit 1: Concepts?

9 exam sessions from 2021 to 2025, the latest May 2025. Every Paper 1, 2 and 3 in every timezone is read and classified in full, which gives 20 papers in this archive.

Which Unit 1: Concepts topic comes up most?

Ethical treatment of participants (1.6.1): in 55% of papers, last seen May 25 P3. Usually "discuss", worth about 17.8 marks in a paper that includes it.

Can I see the original question and mark scheme?

No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.

What do "banker", "due" and "rising" mean?

Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.

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Reading this page and the exam pattern is free. A free account generates three sets of ten questions and launches one practice set. Pro opens every question in any scope, sets of twenty or all, and unlimited practice.

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