IB Economics SL Extended Essay Example

The student poses a specific, time-bound question that is clearly linked to a real policy and a measurable market outcome.

The student's introduction gives the investigation a clear purpose and shows that they understand the broader economic context.

The student uses a mix of source types, which shows some deliberate attempt to build a multi-faceted investigation.

The student's focus shifts between EV demand, EV registrations, ownership, and market growth, which weakens precision.

The method is not developed enough to show how the evidence is being compared in a systematic way.

The investigation does not fully explain how it would isolate the effect of the subsidy from other influences such as competing policies and market trends.

The student shows a clear understanding of key microeconomic ideas such as subsidies, complements, demand, and consumer preferences.

The student applies economic theory to the case in a way that is generally relevant and meaningful.

The student's use of terminology is mostly accurate and helps support the line of argument.

Some concepts are not used with full precision, especially the distinction between demand and quantity demanded.

The discussion sometimes moves from theory to conclusion too quickly without enough support from the sources.

Several claims rely on evidence that is suggestive rather than directly tied to the households affected by the policy.