JC Econs 101

16/11/2024

A new milestone! JC Econs 101 has published a book, compiling all the necessary IB Economics' real world examples for ease of exam prep. Titled "Real World Economics: Detailed Examples for IB Diploma", it is available for purchase now at https://www.amazon.com/dp/B0DN7PKCKL

Read a special excerpt from the book, at the official website here: https://jcecons101.sg/2024/11/16/responses-to-the-problem-of-asymmetric-information/

Real World Economics: Detailed Examples for IB Diploma

06/01/2024

The Circular Flow of Income is a concept that students frequently ignore, to ever-increasing risk. Find out why this shouldn’t be the case and how you can avoid being the exam’s victim.

https://jcecons101.wordpress.com/2023/12/23/essential-economics-exam-cheat-sheet-the-circular-flow-of-income/

09/08/2023

The "A" level H2 Ecnomics syllabus has revamped significantly for 2023. The explicit addition of Cognitive Bias to the concepts is one that students should pay particular attention to.

https://jcecons101.sg/2023/08/09/the-cognitive-bias-concept-in-a-level-h2-economics-exam-9570/

16/07/2023

2023 saw the first introduction of non-rejectability as a characteristic of a public good. Worried about the scant details in your school's notes, learn the key details here!

https://jcecons101.sg/2023/07/17/what-non-rejectability-in-a-public-good-means/

17/06/2023

The n-firm concentration ratio as taught to "A-level" and IB Economics students is known to have serious weaknesses. A better alternative is the HHI, which is discussed in detail in this latest article here.

https://jcecons101.sg/2023/06/17/weaknesses-of-the-n-firm-concentration-ratio-why-the-hhi-is-a-better-indicator/

28/05/2023

The concept of maximising Total Revenue as a producer is commonly tested in "IB" Economics Paper 3.

Avoid getting tripped up as a student by learning these simple proofs in my latest article.

https://jcecons101.sg/2023/05/28/why-total-revenue-is-maximised-when-demand-is-unitary-price-elastic/

15/04/2023

What are the challenges faced when adopting supply side policies?

A student posed me this question on my live chat, and TLDR: There are many challenges indeed, but generally time and cost are the biggest impediments.

01/04/2023

Is a persistent current account surplus a boon or a bane? Consequences of economic policy choices are seldom neat, and this is no exception.

https://jcecons101.sg/2023/04/01/is-a-persistent-current-account-surplus-always-bad/

07/03/2023

We haven't seen much academic materials for direct subsidies in "A" & "IB" level Economics. What better way to talk about it than to wade into Singapore's current hot topic about housing affordability?

https://jcecons101.sg/2023/03/08/the-hdb-housing-grant-as-an-example-of-a-direct-subsidy/

21/02/2023

Another question from a reader!

What is the difference between an “Economic Good” and a “Non-Economic Good”?

TLDR: An Economic good is one where there is a "viable" price under market conditions, whereas a non-Economic good doesn't have one.

https://jcecons101.sg/2023/02/21/what-is-the-difference-between-an-economic-good-and-a-non-economic-good/