Most IB Economics IA portfolios falter at the outset. Students often start with an interesting news article, select a diagram that seems to fit, and then try to determine which key concept applies. By the time they reach 600 words, the commentary is heavy on definitions, the diagrams are generic, and the evaluation reads like a list of pros and cons without a coherent analytical thread. The concept-first workflow reverses this sequence. For IB Economics HL, it means choosing a key concept as your analytical lens first, pairing it with a specific syllabus unit, and only then searching for an article that fits that combination-so the article becomes evidence for reasoning you already planned, not the thing that dictates your diagrams and evaluation.
Under the current Economics guide, this isn’t optional. Guidance states that the key concept is a marked criterion and must be identified and integrated into the chain of reasoning, diagram choice, and evaluation-not merely named in the introduction. Examiners want the concept to organize how you explain the mechanism, identify who is affected, and state the conditions under which your argument holds. A concept dropped in as a sentence-one label and never revisited does exactly what examiners can see immediately: it signals the article came first.
Concept-first planning also protects you from the 800-word failure mode: a content dump of definitions, pros and cons, and half-used diagrams. Research on concept-based curricula reports that concept-based design is intended to reduce content overload and promote deeper conceptual thinking over fact-heavy coverage. Choosing your key concept and syllabus unit before touching the news narrows your focus to one mechanism, a set of targeted diagrams, and evaluation that stays tightly aligned with the IA criteria.
Mapping Concepts to Syllabus Units
Once you commit to going concept-first, the practical question becomes: which key concept pairs with which syllabus unit in a way that can actually generate a mechanism and a genuine trade-off? The test is simple-can you predict, before selecting any article, what model you’ll use, what the policy or market change involves, and who gains or loses under what conditions? If yes, the pairing is strong. If it takes an article to tell you, you’ve already gone article-first.
Scarcity generates trade-offs most clearly in resource allocation and production contexts, and in development settings where limited inputs force real choices between competing uses. Choice fits consumer behavior and firm decisions, where the mechanism is an agent responding to a changed constraint or incentive. Efficiency earns its analytical purchase in market failure and welfare analysis-you can measure an outcome against an explicit social optimum and show precisely where it falls short. Equity carries the most weight in labor markets and tax policy, where distributional effects between identifiable groups are built directly into the mechanism. Intervention belongs across price controls, subsidies, and macro demand management-units defined by the premise that markets need policy to deliver the intended outcome. Sustainability works best in environmental economics and energy markets, where long-run resource use and externalities operate across different time horizons.
Some pairings are thin: the concept gets named, but there’s no tight link to a diagram or evaluative tension, and the commentary collapses into definitions. Rich pairings are those where the concept itself creates the trade-off to analyze-equity versus efficiency in a labor-market intervention is the clearest example. Teacher guidance under the current syllabus also makes clear that each of your three commentaries must use a different key concept, so planning three distinct concept-unit combinations in advance isn’t just good practice-it’s the only way to avoid repeating the same analytical pattern across your portfolio.
Selecting Articles Through Your Concept Lens
Three checks tell you quickly whether a candidate article can support a focused IA. First, specificity: favor articles describing a narrow, clearly defined market or policy event so you can show a before-and-after mechanism rather than a vague trend. Second, syllabus fit: confirm the event maps cleanly onto your chosen unit and involves a policy or market change you can render in a standard model. Third, analytical depth: look for built-in tension-who gains, who might lose, and what depends on elasticities, time horizon, or market power-rather than a simple list of advantages and disadvantages.
Broad, high-ranking topic overviews routinely fail all three. They tend to mix several markets or policies at once, blur the mechanism, and push you toward restating the article in textbook language-with diagrams that feel like templates rather than precise maps of what the article actually describes. Even if you have plenty of background reading or access to revision platforms and resource banks, the concept-first lens and this three-part filter are what stop you from picking an attractive-sounding article that can’t support a criterion-aligned IA.
A brief worked example makes the logic concrete. Suppose you decide first to write from the lens of equity and intervention within microeconomics, focused on government policy in the labor market. When you encounter the AOL report titled ‘Minimum wage rises to £12.71 an hour as firms warn of impact,’ it passes all three checks: a specific, dated UK policy change-the National Living Wage rising to £12.71 for workers aged 21 and over, effective from a clearly stated date-a named scale of around 2.7 million workers affected, and employer warnings about cost impact. That combination almost forces a clean model (a binding minimum wage as a price floor in the labor market) and pre-loads your evaluation: distributional gains for low-wage workers against potential job losses or reduced hours, with the size of those effects depending on demand elasticity for labor, the degree of market power (competitive market versus monopsony), possible non-compliance, and how far higher labor costs pass through to prices.
Structuring Your Commentary with Concept-Driven Diagrams and Evaluation
Once you have a concept-unit-article triad, the diagram choice follows from the mechanism that combination implies-not from a mental catalog of popular IA diagrams. The question to ask is: which model best captures how this specific event changes price, quantity, income, or another key variable through the lens of my chosen concept? For an equity-focused minimum wage commentary, that’s a labor-market diagram with a binding price floor and clearly identified groups-not a generic aggregate demand and supply model with no distributional story attached.
Build the diagram in three moves. First, make the article-specific shift visible: show exactly which curve moves, in which direction, and where any price control or quota binds, using labels that match the article-the actual wage level, the stated tax rate. Then tie labels to stakeholders and the concept by marking areas or points for different groups-low-wage workers, firms facing higher costs, taxpayers-so the diagram becomes a visual map of equity, efficiency, or sustainability effects. Finally, bake in evaluation conditions: note elasticities, degree of market power, and the short versus long run on the diagram itself, so you have concrete material to refer back to when discussing where your conclusions might change.
Evaluation then grows naturally from the concept rather than being bolted on as generic pros and cons. An efficiency lens pushes you to ask whether the intervention moves the market closer to or further from the social optimum, and under which assumptions. An equity lens pushes you to weigh who gains and who loses, and whether the distributional change is worth the efficiency cost. An article-first workflow, by contrast, typically produces forced diagram choices, a token sentence about the key concept, and evaluation that reads like a checklist rather than a logical extension of the argument you’ve built.
Sequencing Your IA Portfolio with a Concept-First Planning Calendar
Start in Weeks 1-2 by choosing your key concept and syllabus unit, then write a one-sentence trade-off claim. If you can’t write that sentence, revise the pairing before searching for articles, and note the mechanism and evaluative conditions you want an article to contain. In Weeks 3-4, use those notes to filter candidates through the vetting checks and commit to the article with the cleanest mechanism and built-in evaluative tension. Weeks 5-6 are for drafting: build a chain of reasoning where the concept shapes explanation, diagrams, and evaluation. Week 7 is specifically for checking whether the concept is doing real analytical work-not just named in the introduction but actually organizing your argument, which is what the marked criterion requires-using the integration checks below before teacher or peer review. Across the year, stagger your three commentaries to cover different key concepts and units, in line with current IA guidance that the key concept must actively shape each commentary’s reasoning.
- Log: at the top, write your chosen concept and one-sentence concept claim, then highlight at least one claim-linked sentence in each body paragraph. If a paragraph has no highlighted sentence, rewrite it so the concept is directly driving that section’s reasoning-not just mentioned nearby.
- Diagram check: every label must be article-specific-the actual wage level, the named stakeholder groups, an identified elasticity condition. If the diagram could drop unchanged into a different IA, relabel it before submitting.
- Cadence: run this audit twice-after your first full draft and after tightening to the word limit. If the second pass leaves fewer claim-linked sentences than the first, you cut the wrong material; restore concept-bearing analysis, not definitions.
Reaffirming the Concept-First IA Workflow
The payoff of building your IA from a structured sequence of choices is that analysis and evaluation within 800 words become far more manageable-both follow directly from decisions you made before you wrote a single sentence. To act on that: choose your first key concept and syllabus unit, sketch a one-sentence trade-off you want to investigate, then run the three vetting checks so the article you select locks you into specific, concept-driven reasoning rather than a generic commentary.
