Results

Journal article

AEA Papers and Proceedings :

Negative weights are no concern in design-based specifications

Recent work shows that popular partially linear regression specifications can put negative weights on some treatment effects, potentially producing incorrectly signed estimands. We show that this is not an issue in desig...Read more...

Journal article

The Lancet Public Health :

Policy stringency and mental health during the Covid-19 pandemic: a longitudinal analysis of data from 15 countries

To date, public health policies implemented during the COVID-19 pandemic have been evaluated on the basis of their ability to reduce transmission and minimise economic harm. We aimed to assess the association between COV...Read more...

Journal article

Scientific Reports:

In search of features that constitute an "enriched environment" in humans: associations between geographical properties and brain structure

Enriched environments elicit brain plasticity in animals. In humans it is unclear which environment is enriching. Living in a city has been associated with increased amygdala activity in a stress paradigm, and being brou...Read more...

CEP discussion paper

Intergenerational Mobility and the Informative Content of Surnames

We propose an alternative method for measuring intergenerational mobility. Traditional methods based on panel data provide measurements that are scarce, difficult to compare across countries and almost impossible to get ...Read more...

CEP discussion paper

Products and Productivity

Firms' decisions about which goods to produce are often made at a more disaggregate level than the data observed by empirical researchers. When products differ according to production technique or the way in which they e...Read more...

CEP discussion paper

Fixed-Term Contracts and the Duration Distribution of Unemployment

In the mid-1980s, many European countries introduced fixed-term contracts. Since then their labor markets have become more dynamic. This paper studies the implications of such reforms for the duration distribution of une...Read more...

CEP discussion paper

Cross Sectional Evolution of the US City Size Distribution

We report nonparametrically estimated stochastic transition kernels for the evolution of the distribution of US metropolitan area populations, for the period 1900 to 1990. These suggest a fair amount of uniformity in the...Read more...

CEP discussion paper

Spatial Evolution of the US Urban System

We test implications of economic geography models for location, size and growth of cities with US Census data for 1900 u 1990. Our tests involve non-parametric estimations of stochastic kernels for the distributions of c...Read more...