A Level Psychology: Specialist Options Overview (Cambridge 9990)

This guide covers Paper 3 Specialist Options 1, an A Level-only paper for Cambridge International A Level Psychology 9990. A Level candidates add two specialist options to the AS Level core: one from Paper 3 and one from Paper 4, each drawn from the same menu of four — Clinical, Consumer, Health and Organisational Psychology. This guide gives an overview of all four options as they appear on Paper 3, to help candidates and schools choose which to study, alongside a separate guide covering Paper 4’s version of the same choice.

Where this fits in 9990

AS Level covers four core approaches (Biological, Cognitive, Learning and Social) through Paper 1, plus Research Methods through Paper 2. The full A Level then applies those core approaches to two chosen areas of applied psychology, one via Paper 3 and one via Paper 4 — each of the four specialist options can, in principle, be studied for either paper, so a school’s choice of which two options to teach (and for which paper) is a curriculum decision made locally, not fixed by the syllabus itself.

Syllabus coverage

CAMBRIDGE A LEVEL PSYCHOLOGY (9990) — PAPER 3: SPECIALIST OPTIONS 1

• 3.1 Clinical Psychology — the classification and diagnosis of psychological disorders, and approaches to treating them
• 3.2 Consumer Psychology — how psychological principles apply to consumer behaviour, advertising and decision-making
• 3.3 Health Psychology — psychological factors in health, illness and health-related behaviour
• 3.4 Organisational Psychology — how psychological principles apply to behaviour, motivation and management within workplaces

How to approach it

Because a school studies only 2 of these 4 options (one via Paper 3, one via Paper 4), the practical starting point for any candidate is knowing which two their own course actually teaches — this guide covers the choice at a survey level so it is useful before that decision is finalised, but candidates should confirm with their own teacher which specific options apply to them rather than assuming.

Whichever two options a course actually teaches, each specialist option follows the same underlying structure as Paper 1: applying the syllabus’s core approaches (Biological, Cognitive, Learning, Social) to a specific applied context, and being assessed on both theoretical knowledge and Research Methods applied to that context specifically. For Clinical Psychology (3.1), strong answers can discuss more than one classification system or treatment approach and weigh their relative strengths, rather than presenting a single diagnostic or treatment model as uncontested. For Consumer Psychology (3.2), the strongest answers apply psychological concepts (such as persuasion or decision- making biases) to real, specific advertising or purchasing scenarios, rather than discussing consumer behaviour only in general terms.

Health Psychology (3.3) rewards being able to discuss psychological factors alongside biological ones in explaining health outcomes and behaviour change — for instance, discussing why health advice does not always translate into behaviour change, using named psychological models rather than common-sense explanation alone. Organisational Psychology (3.4) similarly rewards applying named psychological concepts (such as theories of motivation or leadership) to specific workplace scenarios, since exam questions in this option typically present a workplace context and ask candidates to apply psychological principles to it directly.

Across all four options, because each is assessed alongside Research Methods applied to that specific context, revision should not treat the specialist option as a self-contained body of facts separate from the methods content examined at AS Level — being able to suggest and evaluate a research method for studying a question within the chosen specialist option is tested as consistently here as it is in the core Paper 1 and Paper 2 content.

Worked example: applying an approach to Health Psychology

A typical Paper 3 question in Health Psychology might ask candidates to explain why a patient does not follow medical advice, using a named psychological approach. A weak answer states “the patient forgot” or “the patient didn’t care” without any psychological framework. A stronger answer selects a specific approach — for instance, a cognitive explanation focused on how a patient perceives their own risk of illness, or a social explanation focused on the influence of family or community attitudes toward the advice given — and applies it directly to the scenario, rather than describing the approach in the abstract. Where a question asks for evaluation, the strongest answers note a specific limitation of the chosen approach (for instance, that a purely cognitive explanation may understate the role of social or economic barriers to following medical advice) rather than treating any single explanation as complete on its own.

Common mistakes to avoid

• Assuming all four specialist options are studied, rather than confirming with a teacher which two a specific course actually covers.
• Discussing an applied context (a workplace, an advertisement, a health scenario) without linking it back to a named psychological approach or concept from the syllabus.
• Treating a specialist option as unconnected to Research Methods, rather than being ready to suggest and evaluate how a claim within the option could actually be studied.
• Answering with only common-sense explanation for behaviour (in any of the four contexts) instead of applying the specific psychological theory the question is testing.

Official syllabus

Cambridge International A Level Psychology 9990 syllabus for 2024, 2025 and 2026 — cambridgeinternational.org.

Related resources

• Paper 1: Approaches, Issues and Debates — the AS Level core that every specialist option builds on