Your Ultimate Guide to the New IB Psychology Syllabus (2027)

This guide is your complete breakdown of the new IB Psychology syllabus, which has its first assessment in May 2027. We’ve distilled everything you need to know about the new curriculum, assessments, and IA into one place.

At Lanterna, our tutors are IB experts who have aced these exams. We know that the biggest changes to a syllabus can feel overwhelming, but they also present a huge opportunity for prepared students to excel.

By using this guide, you will be able to:

• Understand the core philosophy shift away from rote memorization to "psychological literacy."
• Master the new integrated curriculum of Content, Contexts, and Concepts.
• Learn insider strategies for tackling the redesigned Paper 1, Paper 2, and HL Paper 3.
• Confidently approach the new hypothetical Research Proposal IA with a clear plan.

The New Philosophy: Goodbye Rote Memorization

The IB has redesigned the Psychology course to reward genuine understanding and application, not just your ability to memorize studies. The goal is to develop "psychological literacy": the skill of applying psychological knowledge, scientific reasoning, and ethical awareness to complex, real-world situations.

To achieve this, the old syllabus structure of "core" topics and "options" is gone. It has been replaced by an integrated 3D model. Getting a 7 in this new syllabus means you must be able to think flexibly, connecting theories and studies to new scenarios you’ve never seen before.

The 3D Curriculum Model: Content, Contexts, and Concepts

Think of the new curriculum as a matrix. Every topic you learn is a combination of these three dimensions. Understanding how they intersect is the key to success.

Dimension 1: Content (The Core Approaches)

This is the foundation of your knowledge. You’ll explore the three main approaches to understanding behaviour, but with a greater emphasis on evaluating their strengths and limitations.

• Biological Approach: Investigates the physiological basis of behaviour, including genetics, neuroplasticity, neurotransmitters (like dopamine and acetylcholine), and hormones.
• Cognitive Approach: Examines the mental processes behind behaviour, including memory models, schema theory, dual-processing models, and cognitive biases.
• Sociocultural Approach: Explores how the individual and society interact, focusing on social identity theory, cultural dimensions, and conformity.

Dimension 2: Contexts (The Application of Content)

The old "Options" like Abnormal Psychology are gone. Now, all SL and HL students must study four compulsory Contexts. These are the real-world scenarios where you will apply your knowledge of the Content.

1. Health and Well-being: The causes, prevalence, and treatment of mental health disorders and health problems.
2. Human Development: Models of psychological development of the self across the lifespan.
3. Human Relationships: Interpersonal relationships, attraction, communication, and group dynamics.
4. Learning and Cognition: Applying cognitive processes to real-world settings like education or technology.

Dimension 3: Concepts (The Analytical Lenses)

This is the biggest philosophical shift. These six concepts are the analytical tools you will use to critically evaluate everything you learn. They are central to scoring in the top markbands on your essays.

• Bias: How cognitive filters (researcher, participant, or cultural) can influence perception.
• Causality: The ability to establish a true cause-and-effect relationship through controlled experiments.
• Change: The dynamic nature of psychological processes over time or in different situations.
• Measurement: The challenge of operationalizing and quantifying abstract ideas like "love" or "aggression" in a valid way.
• Perspective: How theoretical paradigms or cultural backgrounds shape the interpretation of behaviour.
• Responsibility: The ethical rules of research and the societal implications of psychological findings.

SL vs. HL: What's the Difference?

While the core framework is the same, HL students are expected to go deeper.

Decoding the External Assessments: Paper 1 (SL & HL)

Paper 1 is a 1.5-hour exam worth 35 marks. It tests your ability to integrate Content, Contexts, and Concepts.

• SL: 35% of your final grade.
• HL: 25% of your final grade.

Section A: Short Answer Questions (8 Marks)

Two compulsory 4-mark questions testing your direct knowledge of the three core approaches.

Top Tip: Pay strict attention to the command term. If it asks you to "Explain," don't "Evaluate." Answer the exact question asked. A perfect structure is: a direct answer, followed by 2-3 points supported by a specific study.

Section B: Applied Short Answer Questions (12 Marks)

Two compulsory 6-mark questions where you are given an unseen scenario from one of the four Contexts. This is where top students pull away from the pack.

Top Tip: Your entire answer must be about the scenario. Do not just write a pre-memorized essay on a study. Explicitly link the psychological theory or study to the names, situations, and details in the stimulus provided. The scenario is your framework, not background noise.

Section C: Extended Response Question (15 Marks)

You choose one of two prompts. Each prompt links a Context to one of the six Concepts (e.g., "In the context of human development, evaluate one or more strategies used to measure theory of mind").

Top Tip: This is not a knowledge dump. Your essay must be an argument about the Concept in the question, using studies as your evidence. Use a clear structure like PEEL (Point, Evidence, Explanation, Link) for each paragraph. If the command term is "Evaluate," you must present a balanced argument of strengths and limitations to score high.

Mastering Research Methods: Paper 2 (SL & HL)

Paper 2 is a complete redesign. It is a 1.5-hour, 35-mark exam focused entirely on research methodology.

Section A: Class Practicals (20 Marks)

During the course, you will conduct four class practicals: an Experiment, an Observation, a Survey/Questionnaire, and an Interview/Focus Group. Section A asks four compulsory, predictable questions about one of these methods.

1. Describe how you used the method in your practical (4 marks).
2. Explain a specified concept (e.g., measurement) in relation to your practical (4 marks).
3. Compare and contrast your practical’s method with an alternative method (6 marks).
4. Design a new study on the same topic using a different method (6 marks).

Section B: Evaluation of an Unseen Study (15 Marks)

You will be given a summary of a study you have never seen before. You must discuss and evaluate it using two or more of the six core concepts.

Top Tip: Do not force your favorite concepts onto the study. Read the stimulus carefully and choose the concepts that are most relevant to the methodology described. For a qualitative interview study, "Causality" (and why it can't be established) and "Perspective" (and the risk of researcher bias) are far more relevant than other concepts. Always start by defining the concepts you have chosen before applying them.

The HL Challenge: Paper 3

This 1.75-hour, 30-mark exam is for HL students only. It assesses your understanding of the HL extensions (Culture, Motivation, Technology) through data analysis. You will be given a resource booklet with quantitative data (graphs, charts) and qualitative data (interview excerpts) and must synthesize the information to answer a series of questions. Success here depends on your ability to interpret data, evaluate research, and reconcile conflicting findings.

The New IA: Your Hypothetical Research Proposal

The Psychology IA has been completely transformed. You are no longer required to conduct an experiment. Instead, both SL and HL students will write a hypothetical Research Proposal of up to 2,200 words, worth 24 marks.

The goal is to design a study that addresses a real-world problem for a specific "population of interest." Because it's hypothetical, you are encouraged to be ambitious and design sophisticated studies that would be impossible to actually conduct in high school.

IA Assessment Criteria

IA Project Management Timeline

Avoid the classic DP2 burnout where all your deadlines collide. Follow a strict timeline.

The Grade 7 Playbook: Insider Strategies

Top students don't just work harder; they work smarter. Here are the strategies that separate the 6s from the 7s.

1. Depth Over Breadth

Do not try to memorize 40 different studies superficially. It’s a fatal error. Instead, select 6 to 8 powerful, versatile studies for each approach (Biological, Cognitive, Sociocultural). Learn these studies in granular detail: the sampling technique, the operationalization of variables, the controls, and the statistical findings. This depth allows you to use one study to answer multiple types of questions, demonstrating true mastery.

2. Master Methodological Evaluation

Average students use generic criticisms like, "This study lacked ecological validity." Examiners see this as low-level thinking. Top students do this instead: When discussing strengths, they focus on the specific controls the researchers used to establish causation. When discussing limitations, they critique the study's generalizability based on the specific sample used, or they attack the construct validity (did the experiment truly measure what it claimed to measure?).

3. Use Active Concept Mapping

Don't wait until the exam to connect concepts to content. Do it during revision. For every key study you master, actively write down how each of the six concepts (Bias, Causality, etc.) applies to it. This proactive mapping builds a network of sophisticated arguments in your mind, ready to be deployed instantly in an essay.