Andy Ferrara
andyferrara.bsky.social
Andy Ferrara
@andyferrara.bsky.social
Economic historian. Associate Professor at the University of Pittsburgh and Research Associate at the NBER. https://andreas-ferrara.com/
Reposted by Andy Ferrara
VoxEU column now up for my paper on "Wars, Taxation and Representation" with @essobecker.bsky.social, @andyferrara.bsky.social and @luigipascali.bsky.social.

Full paper available here:
doi.org/10.1093/jeea...
@essobecker.bsky.social, Andreas Ferrara, @ericmelander.bsky.social‬, & @luigipascali.bsky.social explore how wars played a crucial role in the emergence of the blueprints for modern states in #Europe as conflict forced rulers to strike bargains with their subjects.
cepr.org/voxeu/column...
#EconSky
July 17, 2025 at 12:27 PM
Reposted by Andy Ferrara
My research team (w/ @andyferrara.bsky.social, Sam Bazzi, Eric Chyn, Martin Fiszbein, and Thomas Pearson) is hiring a full-time economics postdoc for the 2025-26 academic year! If you know someone who might be interested, see the link below.
Recruitment
workforcenow.adp.com
August 22, 2025 at 4:10 PM
Reposted by Andy Ferrara
Frontline Union Army captains cut desertions and boosted cohesion through leading by example, earning postwar-wage gains and greater recognition, from @andyferrara.bsky.social, Christian Dippel, and Stephan Heblich https://www.nber.org/papers/w34057
July 26, 2025 at 5:00 PM
Reposted by Andy Ferrara
“The No Club” is now available in Chinese! I got to celebrate the publication while presenting at the ESAWorld meetings in Beijing. It was a pleasure to meet our publisher at China Machine Press and to reconnect with our extremely talented and generous Pitt alumni. What an amazing trip.
June 19, 2025 at 3:30 AM
Reposted by Andy Ferrara
Slowly but surely coming along: we have a new version of our working textbook on diffs in diffs!

papers.ssrn.com/sol3/papers....

Chapters 2 to 4, which cover the set up, classical DIDs, and relaxations of the parallel trends assumptions have been thoroughly revised and are now almost finished.
Credible Answers to Hard Questions: Differences-in-Differences for Natural Experiments
This book introduces applied researchers to modern Differences-in-Differences (DID) methods, that they can use to obtain credible answers to hard causal inferen
papers.ssrn.com
March 12, 2025 at 3:09 PM
Reposted by Andy Ferrara
Linked individual data using WWII Army and administrative tax records show mixed impacts of service on long-run economic outcomes for different racial and ethnic groups, from Sergio E. Barrera, Andreas Ferrara, Price V. Fishback, and Misty L. Heggeness https://www.nber.org/papers/w33382
January 28, 2025 at 6:00 PM
Reposted by Andy Ferrara
🚨 New Working Paper 🚨

w/ @pdavidboll.bsky.social and @jvoth.bsky.social

Do you run regressions on spatial data? Then keep reading!

We present a guide and Stata package for methods by Müller and Watson (2024 ECTA) to deal with Spatial Unit Roots in Regressions.

Link in 🧵 (1/n)
January 22, 2025 at 12:38 PM
Reposted by Andy Ferrara
The last four decks (at least for now) are here:

11 Problems of TWFE: psantanna.com/DiD/11_Stagg...

12 Staggered DiD (mostly CS): psantanna.com/DiD/12_CS.pdf

13 Challenges when Treatment turns on and off: psantanna.com/DiD/13_On_of...

14 Random Treatment Timing: psantanna.com/DiD/14_Rando...
psantanna.com
December 31, 2024 at 6:49 PM
Reposted by Andy Ferrara
We’re hiring predocs at VSE with a start date of summer 2025. Come work with me on industrial policy and industrialization past and present. Not your thing? A number of my wonderful colleagues are also hiring! Listing is here: economics.ubc.ca/news/pre-doc...
Pre-Doctoral Fellow/Research Technician Opportunities - Vancouver School of Economics
Join the Vancouver School of Economics: Pre-Doctoral Fellow/Research Technician Opportunities The Vancouver School of Economics (VSE) at the University of British Columbia (UBC) is excited to announce...
economics.ubc.ca
December 13, 2024 at 11:56 PM
The Economics Department at the University of Pittsburgh is hiring! We have an Open Rank position. You can find details and application instructions here:

www.aeaweb.org/joe/listing....
American Economic Association: JOE Listings - August 1, 2024 - January 31, 2025
www.aeaweb.org
December 10, 2024 at 11:08 PM