IB Economics SL Extended Essay Example

The research question is sharply focused on a real economics issue and is geographically delimited to Kuala Lumpur. That gives the investigation a clear policy context and makes it suitable for systematic analysis rather than a general discussion of transport.

The student explicitly narrows the investigation to three indicators. That is a strong methodological move because it shows an attempt to define a manageable scope and signals how the argument will be organised.

This exclusion is sensible, but the student does not explain how omitting this period affects the validity of later comparisons. Because the research question depends on change over time, the method needs a clearer justification for which years are included and how the before/after period is defined.

The methodology would be stronger if the student stated exactly which ridership series, dates, and comparison periods will be used. Naming the precise variables in advance would make the method easier to replicate and would show more informed selection of evidence.

The interview is relevant, but the student does not explain why this source is sufficiently balanced despite the interviewee’s institutional role in promoting MRT provision. A brief note on possible perspective bias and how it will be checked against other evidence would improve methodological rigour.

The student opens with relevant contextual evidence and links development to transport demand. That helps ground the investigation in the Malaysian setting rather than treating the issue as purely theoretical.

The diagram is used to communicate a core economic model, and the student attempts to explain the welfare-loss mechanism in words. That is effective because it connects the abstract theory of market failure to the case study.

The reference to “cigarettes” is conceptually incorrect in a transport essay and weakens the precision of the economic explanation. The student should replace this with the correct source of external costs from car use, such as emissions, congestion, or accident risk.

This is a useful application of the interview, but the student treats the interviewee’s statement as if it were economic proof. The response would be stronger if this view were paired with independent evidence showing that the MRT actually reduced congestion or emissions in Kuala Lumpur.

This claim needs tighter economic reasoning. The student should explain under what conditions cars and trains are substitutes, since the degree of substitutability depends on journey purpose, distance, cost, and first- and last-mile access rather than being fixed.

The argument would be sharper if the student distinguished affordability from preference. Adding evidence on household income, car prices, or mode-choice behaviour would show whether public transport use is driven mainly by budget constraints or by other factors.

This is presented as if it were an observed outcome, but it is an estimate from a study. The student should clearly label modelled or projected figures as such and avoid implying that they directly measure the MRT’s realised effect.

The safety point is relevant, but it would be stronger if the student related this general statistic to Kuala Lumpur’s transport context. A brief explanation of whether local crash rates or modal shift data support the claim would make the application more convincing.

This is a strong analytical move because the student does not assume the MRT automatically changes behaviour. Instead, the evidence is used to test the claim and to show that the relationship is more complex than a simple before-and-after story.

This inference is too strong: vehicle registrations do not prove whether current drivers changed mode or whether new buyers were already planning to purchase cars. The student should use data that more directly measures MRT usage, congestion, or modal shift before concluding that behaviour did not change.

The student identifies an important limitation that helps explain why the policy may not fully shift behaviour. This is valuable analysis because it moves beyond description and starts to explain why the MRT’s impact is constrained.

This conclusion is not adequately demonstrated in the main body. The student should either provide direct ridership evidence here or soften the claim to reflect that the increase is suggested rather than clearly proven by the available data.

The Singapore comparison is useful, but the evaluation would be stronger if the student contrasted the policy with Kuala Lumpur’s urban form, governance, and income conditions. That would help show whether Singapore is a truly comparable benchmark or only an illustrative example.

What evidence shows that the tax burden in Singapore falls in the way the student describes, and how might equity effects differ for low-income versus high-income drivers? Thinking about this would help the student evaluate the policy more critically rather than presenting it only as a success.

This is a reasonable judgement, but it is not fully evaluated against alternatives. The student should compare MRT investment with other policy options, such as congestion charging or fuel subsidy reform, to justify why public transport is the best or most feasible response.

The methodology section is present, but it would benefit from a more explicit explanation of how each source type will be used to answer the research question. The student should show how the data, interview, and diagrams fit together in the overall argument rather than listing them separately.

The report follows a clear extended-essay structure, with an introduction, methodology, themed discussion, interim conclusion, comparison, final conclusion, and bibliography. That organisation helps the reader follow the argument and shows awareness of the conventions of this genre.

The figure is relevant, but its analytical value would increase if the student explicitly states in the surrounding text what trend the figure shows and why that trend matters to the argument. A brief interpretation after each figure would improve integration of evidence into the essay.

The structure would be even stronger if the comparison to Singapore were introduced earlier as part of the analytical framework rather than only after the interim conclusion. That would create a more integrated line of argument across the whole essay.

The conclusion is clearly signposted and returns directly to the research question. That coherence is effective because it gives the essay a definite endpoint and shows that the discussion has been used to support a final judgement.

Several bibliography entries appear incomplete or inconsistently formatted, so the referencing style is not yet fully controlled. The student should standardise the citation format across all sources to improve academic professionalism and make source tracing easier.