Pedro Picchetti
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pedropicchetti.bsky.social
Pedro Picchetti
@pedropicchetti.bsky.social
240 followers 170 following 29 posts
PhD student at Insper visiting Brown and Metrics Big Ticket. Incoming AP @IE_UC.


https://sites.google.com/view/pedropicchetti/home
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pedropicchetti.bsky.social
Hi everyone! I am happy to share this note titled "Difference-in-Differences with Binarized Treatments: A Cautionary Tale".

I study the common practice in DiD settings of recoding a multi-valued treatment into a binary indicator. I hope you enjoy it!

www.dropbox.com/scl/fi/491xi...
October 31, 2025 at 2:07 PM
Reposted by Pedro Picchetti
voxdev.bsky.social
🆕 How regulating junkyards reduced car theft in Brazil

Today on VoxDev, André Mancha (@j-pal.bsky.social) discusses how increased regulation of the second-hand automotive part market reduced car theft in Brazil: voxdev.org/topic/instit...
How regulating junkyards reduced car theft in Brazil
Unregulated markets for second-hand goods fuel crime worldwide. In Brazil, strengthening oversight of the second-hand market for automotive parts helped reduce car theft, simultaneously lowering insur...
voxdev.org
April 17, 2025 at 10:24 AM
pedropicchetti.bsky.social
Exciting personal news!!

My Job Market season is over. I am thrilled to announce I am joining PUC-Chile as an Assistant Professor next semester. Looking forward to joining this great department and working at the Católica.

Great times are coming🤠
February 5, 2025 at 1:21 PM
pedropicchetti.bsky.social
Hi all. I'm Pedro Picchetti from INSPER Institute of Research and Education, in Brazil. My #EconJMP provides a new method for the identification of dynamic causal effects using Instrumental Variables. sites.google.com/view/pedropi...
The instrumental variables (IV) method has been widely studied in cross-sectional settings. However, many practical applications involve panel data, in settings where a unit's treatment status may turn on or off over time. I show that in the presence of dynamic treatment effects, that is, if past treatments affect current potential outcomes, standard methods are no longer valid if the instruments are serially correlated. This paper proposes the nonparametric identification of dynamic causal effects in a potential outcomes framework in which potential outcomes depend on the treatment path taken by a unit through time but the first stage is static, in the sense that at each period the IV only instruments its contemporary treatment. I provide a nonparametric estimator that is unbiased over the randomization distribution and derive its finite population limiting distribution as the sample size increase.
October 2, 2024 at 2:22 PM
Reposted by Pedro Picchetti
apoorvalal.com
prompted by Jeff Wooldridge extolling the virtues of regression adjustment with propensity weights, implemented it in python and ran some simulations ; it does indeed work pretty well.

apoorvalal.github.io/LalQuartoBlo...
Comparing selection on observables estimators – Lalgorithms
apoorvalal.github.io
September 30, 2024 at 4:09 AM
pedropicchetti.bsky.social
New draft of my JMP coming soon! Crazy roller coaster of emotions so far (about to get crazier), but man what a learning curve it has been! Ten toes down, till the wheels fall off, let's get this thing!
September 24, 2024 at 6:23 PM
pedropicchetti.bsky.social
A'JA WILSON
September 22, 2024 at 1:41 PM
pedropicchetti.bsky.social
Dolorido demais ver seu grupo de melhores amigos se desmantelando por conta de mulecagem, triste demais sentir sua rede apoio se desfazendo...
September 17, 2024 at 5:07 PM
Reposted by Pedro Picchetti
nber.org
Synthesizing and critically reviewing the modern instrumental variables literature that allows for unobserved heterogeneity in treatment effects, from Magne Mogstad and Alexander Torgovitsky https://www.nber.org/papers/w32927
September 15, 2024 at 3:00 PM
pedropicchetti.bsky.social
Hoje eu tive o prazer de conhecer a UFPE e os talentosos pesquisadores do PIMES!
September 12, 2024 at 11:51 PM
pedropicchetti.bsky.social
EU TE AMO CORINTHIANS
September 12, 2024 at 2:15 AM
pedropicchetti.bsky.social
Acontece alguma coisa muito louca no aeroporto que as pessoas passam a preferir esperar de pé do que sentadas
September 11, 2024 at 5:09 PM
Reposted by Pedro Picchetti
nber.org
Model restrictions can introduce bias but improve precision. Instead of testing for bias from potential misspecification, it's nearly optimal to adapt, averaging restricted and unrestricted estimates using data-driven weights, from Armstrong, Kline and Sun https://www.nber.org/papers/w32906
September 11, 2024 at 1:00 PM
pedropicchetti.bsky.social
👉🏽😤👈🏽
September 11, 2024 at 10:02 AM
pedropicchetti.bsky.social
Imperdível!
economiausp.bsky.social USP Economia @economiausp.bsky.social · Sep 4
Em 5 aulas ministradas pelo prof. Luis Alvarez, o objetivo do minicurso é introduzir os alunos a métodos de estimação semiparamétrica.

O curso mostrará como relaxar suposições sobre formas funcionais enquanto se garantem inferências estatísticas. 📚 💡
September 9, 2024 at 1:19 PM
pedropicchetti.bsky.social
Had the chance to present my work in progress "Identification in Endogenous Sequential Treatment Regimes" at Brown University today. Super grateful for the opportunity and the feedback.🤠
November 3, 2023 at 6:19 PM
Reposted by Pedro Picchetti
hesss.org
got tired of doing academic CVs in TeX and made a simple and easy-to-use (r)markdown template.

hope this might be useful to some #econtwitter JMCs. let me know if you have suggestions.
github.com/simonheb/mar...
October 19, 2023 at 7:46 PM
pedropicchetti.bsky.social
And just like Paul Simon once said, "the leaves that are green turn to Brown".

PS: what a lovely lovely city is Providence.
October 4, 2023 at 9:48 PM
pedropicchetti.bsky.social
Nothing quite like the high of running monte carlo simulations
October 1, 2023 at 4:10 PM
pedropicchetti.bsky.social
My gess is there is no way Jrue Holiday actually stays in Portland. It is not consistent with the rebuild plans.

Brad could unload all the picks and find a suitable substitute for Marcus!! That'd be insane!!
September 27, 2023 at 6:52 PM
pedropicchetti.bsky.social
jfc enough with the Damian Lillard rumours!!
September 26, 2023 at 2:52 PM
pedropicchetti.bsky.social
On my way to Boston to watch the Red Sox! Don't know the first thing about baseball, but I know the words to Sweet Caroline so I guess I'll get around😅
September 23, 2023 at 2:06 PM
Reposted by Pedro Picchetti
adam-lg.bsky.social
"Recent Developments in Partial Identification," Kline and Tamer (2023). Looks like a really nice overview of the state of the partial identification literature.

Polisky 📈📉

doi.org/10.1146/annu...
Identification strategies concern what can be learned about the value of a parameter based on the data and the model assumptions. The literature on partial identification is motivated by the fact that it is not possible to learn the exact value of the parameter for many empirically relevant cases. A typical result in the literature on partial identification is a statement about characterizing the identified set, which summarizes what can be learned about the parameter of interest given the data and model assumptions. For instance, this may mean that the value of the parameter can be learned to be necessarily within some set of values. First, the review surveys the general frameworks that have been developed for conducting a partial identification analysis. Second, the review surveys some of the more recent results on partial identification.
September 21, 2023 at 2:00 AM