Study the wrong IB Psychology guide and you won’t know until the exam presents questions your preparation never required you to answer. Two curriculum guides are currently in circulation, sharing a course name, significant content overlap, and a steady supply of resources that don’t always specify which one they’re built for. The overlap is real enough to make misaligned materials feel plausible right up until they don’t. Both guides are called IB Psychology. Only one governs your exam.
Identify Your Guide Before Doing Anything Else
Guide misalignment rarely starts with ignorance—it starts with assumption. The decision comes down to two facts: when you began the Diploma Programme, and when you sit your Psychology exam. If you started before August 2025 and are sitting Psychology in May or November 2026, the existing guide governs your exam. If you began DP in August 2025 or later and will sit your first Psychology exam in May 2027 or beyond, you’re under the redesigned guide. The official Psychology updates (DP psychology course) page on the International Baccalaureate website—last updated February 2026—confirms the full public timeline: the new course launched in February 2025, with first teaching in August 2025 and first assessment in May 2027. Any resource claiming alignment to the ‘new syllabus’ can be checked against those boundary dates.
Once you’ve confirmed your guide, lock it in. Note your DP start date and exam session at the front of your psychology notes. Save the guide—or its cover page—in a revision folder named with your session. Then send your teacher or coordinator one question: ‘Are we delivering the existing guide assessed in 2026, or the redesigned guide first examined in May 2027?’ After that, stop re-checking unless your school tells you otherwise. Fixing which guide applies is only the beginning; the two guides differ more substantially than their shared course name suggests.
Course Content Changes in the Redesign
The redesigned course restructures content rather than discarding it—but the restructuring is significant. A Pearson practitioner blog on the new DP Psychology guide explains that the new guide is organized around ‘Concepts, Content and Contexts.’ Four contexts replace the old optional topics: Health and well-being, Human development, Human relationships, and Learning and cognition. Six overarching concepts—bias, causality, change, measurement, perspective, and responsibility—operate as the lenses through which content is selected, taught, and assessed.
On the existing guide, your teacher still chooses one or two options, and your exams are built around the core plus those choices. Redesigned-guide language can tempt you to reframe everything through contexts and concepts—but that’s not how your paper is structured or marked. Revising by ‘health’ or ‘relationships’ without anchoring to the specific option or sub-topics your school actually teaches leaves gaps the existing markscheme will find.
For redesigned-guide students, there’s no option selection to manage; all four contexts are compulsory. Preparation means covering each context while understanding how the six concepts shape emphasis and explanation—not just recognizing the concepts’ definitions. Some underlying research appears across both guides. But knowing a study exists is no longer sufficient; the redesigned assessment expects you to show how that research operates within a context and through a concept, and that requirement changes what a complete answer looks like.
Paper 1 and Paper 2: Key Differences
Assessment is where the two guides diverge most sharply. A Themantic Education IB Psychology blog post on the new curriculum notes that in the redesign, Paper 1 questions are framed around linking topics to one of the six key concepts, command terms are no longer used directly in marking criteria, and class practicals are formalized in the guide—even though much of the underlying content carries over from the existing course. Redesigned students should confirm with their teacher that practical work follows the new guide’s specifications.
Under the existing guide, command terms remain central to how short and extended responses are judged, and recent past papers still mirror the structure you’ll sit. Matching the stated command term to the markscheme’s depth expectations is the core self-assessment task. Under the redesigned guide, that task shifts: high-mark answers in Paper 1 need a concept choice that’s visible, explicit, and sustained. Self-marking stops asking ‘did I address the command term?’ and starts asking whether the concept genuinely organized what you wrote.
The weekly cadence splits accordingly. On the existing guide, organize revision by the core plus your teacher’s option or options, run timed SAQ and ERQ sets against recent past papers, and self-check against command-term expectations. On the redesigned guide, organize by the four contexts. Choose one of the six concepts before drafting any practice answer, then reread to see whether that concept drove the argument or merely appeared in the opening line. The contamination rule is simple: if a resource is organized by options, it’s existing-guide material. If it’s organized by four contexts and six concepts, it’s redesigned-first.
Verifying Revision Resources
Revision resources are where the two guides blur most—not because the content is unrecognizable, but because so much of it overlaps. That overlap is precisely what makes a mislabeled ‘new syllabus’ resource hard to spot: the studies look familiar, the topics scan correctly, and only the format expectations betray the problem. Check three things. First, date and session: does the resource state which guide it targets and which assessment session it matches? Any ‘first assessment May 2027’ claim should align with the official Psychology updates (DP psychology course) page, which confirms first teaching August 2025 and first assessment May 2027. Second, organization: option-led materials align to the existing guide, while resources built around four contexts and six concepts belong to the redesign, as described in the Themantic commentary on the new curriculum. Third, assessment language: redesigned-guide resources treat concept-linking as a marking demand in Paper 1. Core content may overlap, but the Themantic commentary underlines that answer formats and markschemes have changed—so even accurate content notes need to be used carefully.
- Track only your top five resources. For each, note its claimed session or guide, whether it’s options-led or contexts-plus-concepts-led, how you intend to use it (content or answer-format models), and one status tag: Aligned, Content-only, or Unverified.
- Treat options-led resources as existing-guide-first and contexts-plus-concepts-led resources as redesigned-first. Leave anything with unclear session claims tagged Unverified until a teacher or document confirms it.
- Re-check only resources tagged Unverified, roughly once a month or when your teacher gives new guidance. Treat anything tagged Aligned as settled.
Past papers remain useful for learning underlying psychological content, but for redesigned-guide students they should inform content practice rather than serve as templates for question wording, command terms, or markscheme logic.
Internal Assessment Implications by Cohort
If content misalignment costs you marks on a practice response, you can correct it. If it reaches the Internal Assessment, the damage is harder to reverse. The IA is the one component where guide-crossing guidance—a criteria framework from the wrong cohort, an evaluation structure imported from redesigned-guide materials—affects work that contributes directly to your final grade. For students on the existing guide, the IA follows the established experimental investigation model and its criteria. Any ‘new syllabus’ IA guidance that imports contexts-and-concepts language should be treated with caution; the reliable reference is the guide document your school is currently using.
If you’re on the redesigned guide, your IA sits within a course that also formalizes class practicals, so expect your teacher to connect IA planning to that broader practical work. Before you lock in a topic, report structure, or evaluation plan, check them against the redesigned guide your school has adopted—ideally the saved copy you identified earlier. Don’t rely on marketing pages or mixed-cohort notes. One is optimized for interest; the other blends preparation advice across sessions that may not share your exam structure.
Keep Every Prep Decision Guide-Aligned
Two guides share a name, a course code, and enough overlapping content to make the distinction feel theoretical—until exam week. The students who lose the most aren’t the ones who skipped preparation; they’re the ones who prepared seriously against the wrong exam expectations and found out too late. Once your guide is confirmed, the downstream decisions become mechanical: content follows options or contexts, answers are framed around command terms or concepts, IA criteria stay with the guide your school is delivering. The decision itself isn’t hard. Not making it is.
