Category: Illustrated

Interactions After Logit: Marginal Effects, Cross-Partials, and Economic Interpretation

Interactions are everywhere in applied economics. We often want to know whether a policy buffer works differently across institutional environments: whether international reserves reduce recession risk more when…

Aizenman, Desbordes and Saadaoui: Quantifying Trade Destruction from Bombs & Bullets vs. Taxes and Sanctions

My recent NBER working paper has been covered on EconBrowser by Menzie Chinn: https://econbrowser.com/archives/2026/04/aizenman-desbordes-and-saadaoui-quantifying-trade-destruction. Kinetic conflict (“military war”) and trade-context hostility (“trade war”) are both economically large and…

Instrument Diagnostics after Local Projections using locproj with Stata

In three previous posts on the use of Geopolitical Turning Points as instruments for bilateral geopolitical relation, I presented the working paper, the underlying logic of the instrument,…

Drawing Local Projection IRFs with Driscoll-Kraay Inference in Stata

Local projections (LPs) have become a workhorse tool in applied macroeconomics since Jordà (2005). They are flexible, robust to misspecification, and easy to interpret. In panel settings, however,…

Chiṭu-Eichengreen-Mehl Global Currencies Database (CEMGCD)

The Chiṭu-Eichengreen-Mehl Global Currencies Database (CEMGCD) has been released and you can explore fascinating multiple databases provided in the following website: https://globalcurrenciesdatabase.com/publications-datasets For people interested in panel time…

Evolution of Media Attention and Tone in U.S.-China Bilateral Relations (GDELT, 1980-2025)

After a series of blogs on the GDELT database discussing how to start with these big data (https://www.jamelsaadaoui.com/tag/gdelt-data/), I propose to update the blog covering the bilateral relationship…

Tin is enjoying a boom

Allow me to share this piece by The Economist about Tin, a critical mineral that is enjoying a boom: https://www.economist.com/finance-and-economics/2025/04/03/tin-an-overlooked-critical-metal-is-enjoying-a-boom They also underline that Tin has a small…

A visual guide to critical materials and rare earths

Allow me to share this very nice visual guide to critical materials and rare earths made by The Economist: https://www.economist.com/graphic-detail/2025/03/24/a-visual-guide-to-critical-materials-and-rare-earths They did a fantastic job and provide the…

Critical Minerals Data Explorer

In a recent publication in Energy Economics, we found that geopolitical risk will drive up the price of several critical minerals, especially during episodes of heightened geopolitical tensions.…

Heterogeneous Difference-in-Differences with Stata (Again)

Yesterday, Stata released two videos on how to use Difference-in-Differences commands built-in within Stata. The videos are very pedagogical, so allow me to share them with you: Treatment…

Explaining the Infrastructure Vulnerability Score for the Russia Federation

After a first blog on how to visualize the ND-GAIN vulnerability scores, I was keen to explore the sub-categories of the vulnerability scores. Among them, I was particularly…

Illustrating the sample variance bias with R and Mathematica

In my previous blog, I recall that we can demonstrate in a few steps that the sample variance is an unbiased estimator of the population variance when we…