Event studies play a central role in class action securities fraud litigation. Event studies are used to assess market efficiency, price impact, loss causation, and damages, all of which are essential elements of a securities fraud claim. However, a substantial increase in market-wide...

We show that the abstract and conclusion of Hansen's Econometrica paper, Hansen (2022) entitled a modern Gauss-Markov theorem (MGMT) obscures a material fact, which in turn can confuse students. The MGMT places ordinary least squares (OLS) back on a high pedestal by bringing in the Cramer-Rao...

Inflation derivatives have been widely used by various institutions to transfer or hedge inflation risks. They have experienced substantial growth since early 2000s and a liquid market has been developing in both Europe and U.S. In order to price inflation derivatives, calculate their risks or...

Scientists are increasingly concerned with making their work easy to verify and build upon. Associated practices include sharing data, materials, and analytic scripts, and preregistering protocols. This has been referred to as a “credibility revolution”. The credibility of empirical legal...

The Olonite Sampling Technique is a sampling method that is used for small and large population. It was developed as a solution to the short comings of the Taro Yamane Sampling Technique. OST ranges from '1 – 1,280,000,000 (one - one billion two hundred and eighty million) population' and 1 -...

I propose a method for estimating treatment effect heterogeneity in event studies with staggered adoption. This method serves as an alternative to two-way fixed effects regressions, which have been shown to be near-term biased in these settings. I build on insights from the machine learning (ML)...

The economics of obesity literature implicitly assumes that measured anthropometrics are error-free and they are often treated as a gold standard when compared to self-reported data. We use factor mixture models to analyse and characterize measurement error in both self-reported and measured...

Economic analysis has approached the problem of the neutrality of money through methods of supply-demand equilibrium in which changes in aggregate demand due to monetary or fiscal policy are equivalent to changes in the denomination of the monetary standard. We re-examine this question using...

In this paper, we evaluate the impact of a reform introduced in Italy in 2018 (Decreto Dignità), which increased the rigidity of employment protection legislation (EPL) of temporary contracts, rolling back previous policies, to reduce job instability. We use longitudinal labour force data from...