Bia
@beatrizgietner.bsky.social
PhD candidate in Econ at UCDublin. Progress, Education, and Human Capital.
https://beagietner.github.io/webpage/ Just work-related stuff here, check my Twitter/X for a personality
https://beagietner.github.io/webpage/ Just work-related stuff here, check my Twitter/X for a personality
Pinned
Hidden Bias, Pie Charts and Spillovers
What to consider when reality has stopped cooperating
www.diddigest.xyz
We have a new post!
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
We have a new post!
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
Hidden Bias, Pie Charts and Spillovers
What to consider when reality has stopped cooperating
www.diddigest.xyz
November 3, 2025 at 5:32 PM
We have a new post!
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
- Bounding DiD estimates when unobserved confounders exist,
- Running DiD on categorical outcomes that must sum to one, and
- Estimating treatment effects when your units are connected in a network (interference + spillovers)
www.diddigest.xyz/p/hidden-bia...
Job-market candidates or job-market candidates' advisers, I'm re-upping this because I want to read (and write about) your theory/applied DiD job-market paper :)
Please send it to me 🙏
www.diddigest.xyz/p/missing-an...
Please send it to me 🙏
www.diddigest.xyz/p/missing-an...
Missing, Messy, and Misweighted
A DiD horror story?
www.diddigest.xyz
October 17, 2025 at 2:07 PM
Job-market candidates or job-market candidates' advisers, I'm re-upping this because I want to read (and write about) your theory/applied DiD job-market paper :)
Please send it to me 🙏
www.diddigest.xyz/p/missing-an...
Please send it to me 🙏
www.diddigest.xyz/p/missing-an...
Reposted by Bia
Counter factual??? You mean FAKE NEWS???
October 8, 2025 at 6:11 AM
Counter factual??? You mean FAKE NEWS???
Reposted by Bia
60% of U.S. students who start college finish within 6 years
• Non-cognitive skills shape grade expectations & performance
• But don’t predict graduation
• Many students misjudge future performance
By @gzamarro.bsky.social , Nichols, Trivitt, Djita
sciencedirect.com/science/arti...
• Non-cognitive skills shape grade expectations & performance
• But don’t predict graduation
• Many students misjudge future performance
By @gzamarro.bsky.social , Nichols, Trivitt, Djita
sciencedirect.com/science/arti...
Unlocking college potential: The role of student expectations and non-cognitive skills in college success
Attending college is a significant human capital investment, but only about 60 % of those who start college will have a completed degree six years lat…
sciencedirect.com
September 22, 2025 at 9:14 PM
60% of U.S. students who start college finish within 6 years
• Non-cognitive skills shape grade expectations & performance
• But don’t predict graduation
• Many students misjudge future performance
By @gzamarro.bsky.social , Nichols, Trivitt, Djita
sciencedirect.com/science/arti...
• Non-cognitive skills shape grade expectations & performance
• But don’t predict graduation
• Many students misjudge future performance
By @gzamarro.bsky.social , Nichols, Trivitt, Djita
sciencedirect.com/science/arti...
We have a new post!📬
⭐️Factorial DiD (Xu, Zhao & Ding)
⭐️DiD With No Untreated Units (de Chaisemartin et al.)
⭐️Treatment Effects in Complex Designs (de Chaisemartin & D’Haultfœuille)
⭐️Inference With Few Treated Units (Alvarez, Ferman & Wüthrich)
diddigest.substack.com/p/where-stan...
⭐️Factorial DiD (Xu, Zhao & Ding)
⭐️DiD With No Untreated Units (de Chaisemartin et al.)
⭐️Treatment Effects in Complex Designs (de Chaisemartin & D’Haultfœuille)
⭐️Inference With Few Treated Units (Alvarez, Ferman & Wüthrich)
diddigest.substack.com/p/where-stan...
Where Standard Assumptions Go To Die
Universal treatments without clean controls, continuous policies without untreated groups, reversible reforms over time and statistical inference with handful of cases
diddigest.substack.com
September 22, 2025 at 1:28 PM
We have a new post!📬
⭐️Factorial DiD (Xu, Zhao & Ding)
⭐️DiD With No Untreated Units (de Chaisemartin et al.)
⭐️Treatment Effects in Complex Designs (de Chaisemartin & D’Haultfœuille)
⭐️Inference With Few Treated Units (Alvarez, Ferman & Wüthrich)
diddigest.substack.com/p/where-stan...
⭐️Factorial DiD (Xu, Zhao & Ding)
⭐️DiD With No Untreated Units (de Chaisemartin et al.)
⭐️Treatment Effects in Complex Designs (de Chaisemartin & D’Haultfœuille)
⭐️Inference With Few Treated Units (Alvarez, Ferman & Wüthrich)
diddigest.substack.com/p/where-stan...
Reposted by Bia
Very interesting post on how the non-profit Feeding America implemented an auction system with its own currency which massively improved allocation of food to food banks.
www.worksinprogress.news/p/how-market...
www.worksinprogress.news/p/how-market...
How market design can feed the poor
America's largest non-profit had a broken distribution system. University of Chicago economists fixed it.
www.worksinprogress.news
September 16, 2025 at 8:08 AM
Very interesting post on how the non-profit Feeding America implemented an auction system with its own currency which massively improved allocation of food to food banks.
www.worksinprogress.news/p/how-market...
www.worksinprogress.news/p/how-market...
Reposted by Bia
The Chamberlain Seminar continues this semester with two exciting online sessions on 9/26 & 10/31! Check out the details below and click below to join our mailing list!
mailman.stanford.edu/mailman/list...
mailman.stanford.edu/mailman/list...
September 8, 2025 at 2:43 PM
The Chamberlain Seminar continues this semester with two exciting online sessions on 9/26 & 10/31! Check out the details below and click below to join our mailing list!
mailman.stanford.edu/mailman/list...
mailman.stanford.edu/mailman/list...
Reposted by Bia
🚨 We have a comment on Begum et al (2018) forthcoming in @readdemography.bsky.social - see link below! @i4replication.bsky.social
We also document changes in language about the randomization between the working paper and published version, and inconsistencies in the authors’ response. See full report (here osf.io/wp8fr/) for more details.
August 27, 2025 at 4:18 PM
🚨 We have a comment on Begum et al (2018) forthcoming in @readdemography.bsky.social - see link below! @i4replication.bsky.social
Reposted by Bia
Some thoughts on Emma Harrington and Matthew Khan's recent NBER paper "Has the Rise of Work from Home Reduced the Motherhood Penalty in the Labor Market?" www.nber.org/papers/w34147
open.substack.com/pub/dismalsc...
open.substack.com/pub/dismalsc...
Work-from-Home as a Lever Against the Motherhood Penalty
Emma Harrington and Matthew Khan recently posted their paper "Has the Rise of Work-from-Home Reduced the Motherhood Penalty in the Labor Market?" as an NBER working paper. I first encountered this pap...
open.substack.com
August 23, 2025 at 2:43 PM
Some thoughts on Emma Harrington and Matthew Khan's recent NBER paper "Has the Rise of Work from Home Reduced the Motherhood Penalty in the Labor Market?" www.nber.org/papers/w34147
open.substack.com/pub/dismalsc...
open.substack.com/pub/dismalsc...
Reposted by Bia
Why Does Value-Added Work? Implications of a Dynamic Model of Student Achievement www.nber.org/papers/w34119
"Although conventional value-added estimates are biased for individual teachers due to attenuation, we find they are forecast unbiased when applied across a sample of teachers"
"Although conventional value-added estimates are biased for individual teachers due to attenuation, we find they are forecast unbiased when applied across a sample of teachers"
Why Does Value-Added Work? Implications of a Dynamic Model of Student Achievement
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
www.nber.org
August 18, 2025 at 1:57 PM
Why Does Value-Added Work? Implications of a Dynamic Model of Student Achievement www.nber.org/papers/w34119
"Although conventional value-added estimates are biased for individual teachers due to attenuation, we find they are forecast unbiased when applied across a sample of teachers"
"Although conventional value-added estimates are biased for individual teachers due to attenuation, we find they are forecast unbiased when applied across a sample of teachers"
Reposted by Bia
TIL the original paper describing CRISPR, by Francisco Mojica, was rejected by 4 journals and took 2 years to be published
![CRISPR as a microbial immune system
In 2003, Mojica wrote the first paper suggesting that CRISPR was an innate microbial immune system. The paper was rejected by a series of high-profile journals, including Nature, Proceedings of the National Academy of Sciences, Molecular Microbiology and Nucleic Acids Research, before finally being accepted by Journal of Molecular Evolution in February, 2005.[3][4]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:73aicoale2mqwrap63rdzwep/bafkreibu3dburfn527r3sbu2ov6y7gebv6zopaznagnfytjtsn6y4k7cs4@jpeg)
August 17, 2025 at 4:00 AM
TIL the original paper describing CRISPR, by Francisco Mojica, was rejected by 4 journals and took 2 years to be published
Reposted by Bia
New issue of Journal of Economic Perspectives is out. Quite timely piece on Fed independence.
pubs.aeaweb.org/doi/pdfplus/...
pubs.aeaweb.org/doi/pdfplus/...
August 14, 2025 at 5:38 PM
New issue of Journal of Economic Perspectives is out. Quite timely piece on Fed independence.
pubs.aeaweb.org/doi/pdfplus/...
pubs.aeaweb.org/doi/pdfplus/...
Reposted by Bia
We have a new post🎈
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Parallel Trends… Conditionally: Covariates, Violations, and More Robust DiD Methods
The devil in the ~DiD details~
open.substack.com
August 11, 2025 at 5:01 PM
We have a new post🎈
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
We have a new post🎈
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Parallel Trends… Conditionally: Covariates, Violations, and More Robust DiD Methods
The devil in the ~DiD details~
open.substack.com
August 11, 2025 at 5:01 PM
We have a new post🎈
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Why your covariates might be "lying" to you and other tales from the "identification frontier":
✅ CBPS-DiD for model misspecification
✅ When good controls go bad (CCC violations)
✅ Bayesian sensitivity for PT violations
open.substack.com/pub/diddiges...
Reposted by Bia
Data come in many different formats and are used in many different ways, but in many cases, a checklist like this (along with good data documentation) can help you verify if a dataset is in a usable format for most general purposes.
osf.io/t8upr
osf.io/t8upr
August 11, 2025 at 1:26 AM
Data come in many different formats and are used in many different ways, but in many cases, a checklist like this (along with good data documentation) can help you verify if a dataset is in a usable format for most general purposes.
osf.io/t8upr
osf.io/t8upr
Reposted by Bia
🚀Be part of the next round of the Women in Economics Mentoring Programme — a unique opportunity that connects early-career women economists with experienced mentors.
🎯 Programme duration: October 2025 – July 2026
📆 Deadline to apply: August 31st
👉 Apply now: form.jotform.com/251723111137...
🎯 Programme duration: October 2025 – July 2026
📆 Deadline to apply: August 31st
👉 Apply now: form.jotform.com/251723111137...
August 4, 2025 at 2:29 PM
🚀Be part of the next round of the Women in Economics Mentoring Programme — a unique opportunity that connects early-career women economists with experienced mentors.
🎯 Programme duration: October 2025 – July 2026
📆 Deadline to apply: August 31st
👉 Apply now: form.jotform.com/251723111137...
🎯 Programme duration: October 2025 – July 2026
📆 Deadline to apply: August 31st
👉 Apply now: form.jotform.com/251723111137...
August 5, 2025 at 12:52 PM
Reposted by Bia
My Retrospective on Wokeness in detail! Blogs are for just saying stuff, after all. So here is my attempt to say what was distinctive (if anything) about a recent era of socio-cultural life, what (if anything) changed, and what (if anything) was to the good
sootyempiric.blogspot.com/2025/08/woke...
sootyempiric.blogspot.com/2025/08/woke...
Wokeness: a Retrospective
In recent times my online sphere has had a fair few people make the claim that, in some sense, the culture has moved on from Woke. The d...
sootyempiric.blogspot.com
August 1, 2025 at 8:01 AM
My Retrospective on Wokeness in detail! Blogs are for just saying stuff, after all. So here is my attempt to say what was distinctive (if anything) about a recent era of socio-cultural life, what (if anything) changed, and what (if anything) was to the good
sootyempiric.blogspot.com/2025/08/woke...
sootyempiric.blogspot.com/2025/08/woke...
We have a new post! 🫶 Covering:
➡️UN-DID (for unpoolable data)
➡️Staggered DiD with misclassification (for handling timing issues)
➡️Interactive/Grouped FE Guide (broader panel data, not specifically DiD but related)
+ 3 applied papers :) diddigest.substack.com/p/did-handli...
➡️UN-DID (for unpoolable data)
➡️Staggered DiD with misclassification (for handling timing issues)
➡️Interactive/Grouped FE Guide (broader panel data, not specifically DiD but related)
+ 3 applied papers :) diddigest.substack.com/p/did-handli...
DiD+: Handling Data Constraints, Timing Issues and TWFE Limitations
What to do when data can't be pooled, timing gets messy, and TWFE isn't enough
diddigest.substack.com
August 1, 2025 at 3:57 PM
We have a new post! 🫶 Covering:
➡️UN-DID (for unpoolable data)
➡️Staggered DiD with misclassification (for handling timing issues)
➡️Interactive/Grouped FE Guide (broader panel data, not specifically DiD but related)
+ 3 applied papers :) diddigest.substack.com/p/did-handli...
➡️UN-DID (for unpoolable data)
➡️Staggered DiD with misclassification (for handling timing issues)
➡️Interactive/Grouped FE Guide (broader panel data, not specifically DiD but related)
+ 3 applied papers :) diddigest.substack.com/p/did-handli...
Reposted by Bia
July 25, 2025 at 3:32 PM
Reposted by Bia
New paper just dropped:
Szaszi, Barnabas, Daniel G. Goldstein, Dilip Soman, Susan Michie. (2025). Generalizability of Choice Architecture Interventions. Nature Reviews Psychology.
Thanks to @szaszibarnabas.bsky.social for doing the lion's share!
www.nature.com/articles/s44...
Szaszi, Barnabas, Daniel G. Goldstein, Dilip Soman, Susan Michie. (2025). Generalizability of Choice Architecture Interventions. Nature Reviews Psychology.
Thanks to @szaszibarnabas.bsky.social for doing the lion's share!
www.nature.com/articles/s44...
Generalizability of choice architecture interventions - Nature Reviews Psychology
Choice architecture interventions (or ‘nudges’) aim to guide behaviour by changing the proximal physical, social or psychological environment. In this Review, Szaszi and colleagues show that the avera...
www.nature.com
July 23, 2025 at 6:21 PM
New paper just dropped:
Szaszi, Barnabas, Daniel G. Goldstein, Dilip Soman, Susan Michie. (2025). Generalizability of Choice Architecture Interventions. Nature Reviews Psychology.
Thanks to @szaszibarnabas.bsky.social for doing the lion's share!
www.nature.com/articles/s44...
Szaszi, Barnabas, Daniel G. Goldstein, Dilip Soman, Susan Michie. (2025). Generalizability of Choice Architecture Interventions. Nature Reviews Psychology.
Thanks to @szaszibarnabas.bsky.social for doing the lion's share!
www.nature.com/articles/s44...
We have a new post! 😇
3 new working papers, 1 published version, and 2 package updates
substacktools.com/sharex/920n-aDa
3 new working papers, 1 published version, and 2 package updates
substacktools.com/sharex/920n-aDa
Heterogeneity, Small Sample Inference, Anticipation, and Local Projections
On uniform confidence bands for conditional effects, a simple approach for small-N inference, refining the
substacktools.com
July 22, 2025 at 5:23 PM
We have a new post! 😇
3 new working papers, 1 published version, and 2 package updates
substacktools.com/sharex/920n-aDa
3 new working papers, 1 published version, and 2 package updates
substacktools.com/sharex/920n-aDa
Reposted by Bia
Excited to share that a study that has followed me through almost my entire PhD is now published in @natcomms.nature.com : www.nature.com/articles/s41... 🧵 1/
Forest loss and uncertain economic gains from industrial and garimpo mining in Brazilian municipalities - Nature Communications
Mining is often seen as having opposing local economic and environmental effects. This study models these dynamics across Brazilian municipalities and shows that outcomes vary over time and by type of...
www.nature.com
July 18, 2025 at 4:32 PM
Excited to share that a study that has followed me through almost my entire PhD is now published in @natcomms.nature.com : www.nature.com/articles/s41... 🧵 1/
We have a new post 🙃
Three recent DiD papers, one shared goal: better estimates in messy settings
☑️DiD that hits efficiency bounds
☑️Synthetic DiD that mimics an oracle
☑️TWFE vs. the new wave
diddigest.substack.com/p/efficient-...
Three recent DiD papers, one shared goal: better estimates in messy settings
☑️DiD that hits efficiency bounds
☑️Synthetic DiD that mimics an oracle
☑️TWFE vs. the new wave
diddigest.substack.com/p/efficient-...
Efficient Estimation, Sequential Synthetic Control DiD, and the TWFE Debate
Some practical insights for a more precise and robust estimation.
diddigest.substack.com
June 27, 2025 at 2:33 PM
We have a new post 🙃
Three recent DiD papers, one shared goal: better estimates in messy settings
☑️DiD that hits efficiency bounds
☑️Synthetic DiD that mimics an oracle
☑️TWFE vs. the new wave
diddigest.substack.com/p/efficient-...
Three recent DiD papers, one shared goal: better estimates in messy settings
☑️DiD that hits efficiency bounds
☑️Synthetic DiD that mimics an oracle
☑️TWFE vs. the new wave
diddigest.substack.com/p/efficient-...