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Essi Kujansuu

@essieconomist.bsky.social
796 followers 316 following 8 posts

Experimental economist. Post-doc at Innsbruck, visiting researcher at Turku, PhD from EUI. sites.google.com/view/essi-kujansuu…

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Essi Kujansuu @essieconomist.bsky.social · 30/06/2026
@i4replication.bsky.social is doing a great job facilitating *debates* about methodology and scientific practises. One can read the arguments and make up their minds: much of the argumentation is made public (instead of being discussed among the editors or other small circles).
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Essi Kujansuu @essieconomist.bsky.social · 30/06/2026
An update to our paper, looking at the robustness of log-like transformations in published papers (warning: they are not robust), particularly, what we recommend doing instead.
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Jack Fitzgerald @jackfitzgerald.bsky.social · 29/06/2026
An update on our log-like specifications paper! We’ve updated our recommendations and added new commands in Stata and R for one of our recommended alternatives. 1/ osf.io/preprints/me...
osf.io
OSF
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Essi Kujansuu @essieconomist.bsky.social · 17/03/2026
Jack wrote a nice summary of our project on log-like specifications. Do not use inverse hyperbolic sine, ln(Z+c) transformations to get around the fact that ln(0) is undefined. These models have very unstable t-statistics with respect to unit scaling and serious non-robustness issues.
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Institute for Replication @i4replication.bsky.social · 27/08/2025
#GDRI_rep Update 8a: Major updates coming up over the next few weeks. 1st update: We reproduced "Parent–teacher meetings and student outcomes" some time ago. The paper was then retracted by the editors of the Euro Econ Rev. Additional studies are connected (see diagram) 🧵
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Institute for Replication @i4replication.bsky.social · 29/05/2025
GiveWell sought an independent check on the evidence supporting >$1 billion it has granted to its top charities. This fall, Alex Cohen asked whether we could obtain the datasets needed to reproduce the underlying RCTs. We said yes; charging only a modest fee to cover our time. 🧵 + 🐀 + blog post!
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Institute for Replication @i4replication.bsky.social · 27/03/2025
#GDRI_rep Update 7: Retraction! Our comment of "Parent–teacher meetings and student outcomes: Evidence from a developing country" has led to the paper being retracted. Our comment is accepted as is. Short 🧵
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Niklas Jakobsson @nikljako.bsky.social · 27/03/2025
I am very happy that the editors took our report seriously. Hope more retractions will follow.
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Essi Kujansuu @essieconomist.bsky.social · 14/03/2025
You have to respect a response to a re-response to a response to a report.
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Institute for Replication @i4replication.bsky.social · 14/03/2025
Our full report and our codes are here: osf.io/5k4f7/files/.... This OSF page also includes the authors' response, our response to their response and a second authors response to our response to their response. We thank the authors for taking the time to respond and this back and forth.
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Institute for Replication @i4replication.bsky.social · 14/03/2025
#GDRI_rep Update 5: We have a new report. We reproduced the paper entitled "Partisan Effects of Information Campaigns in Competitive Authoritarian Elections: Evidence from Bangladesh" by Ahmed, Hodler and Islam published at the Economic Journal. See below for links to report and authors' responses.
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Institute for Replication @i4replication.bsky.social · 09/03/2025
#GDRI_rep Update 3: The paper "Improving Hygiene and Sanitation through Parental Skill Training" by Asadul Islam, Umair Khalil and Tabassum Rahman was conditionally accepted at Economic Development and Cultural Change. We requested a replication package. It has now been withdrawn
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Emilia Tjernstrom @econemilia.bsky.social · 04/03/2025
#OrphanPapers is apparently a thing now #EconSky
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Essi Kujansuu @essieconomist.bsky.social · 03/03/2025
We have a new report out about the #GDRI_rep. The paper has not been retracted but all three authors have withdrawn their names.
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Institute for Replication @i4replication.bsky.social · 03/03/2025
The editor-in-chief at Food Policy (@_Food_Policy) contacted us because an author requested to withdraw their name for: “Determinants and Dynamics of Food Insecurity During COVID-19 in Rural Bangladesh”. We explained the situation and requested a replication package.
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Institute for Replication @i4replication.bsky.social · 03/03/2025
We completed a full report on “Food insecurity and mental health of women during COVID-19: Evidence from a developing country” PLOS One and shared it with the authors and journal. Two out of three authors have already requested to withdraw their names.
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Institute for Replication @i4replication.bsky.social · 03/03/2025
Here is a list of studies, with links to I4R reports, authors’ responses/statements, and emails sent to the editors and authors (with dates): osf.io/23x64/. This excel document is being updated every day.
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Institute for Replication @i4replication.bsky.social · 03/03/2025
We are now aiming to reproduce about 20 published studies. This number keeps increasing as new GDRI studies are forthcoming or are now conditionally accepted.
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Institute for Replication @i4replication.bsky.social · 03/03/2025
#GDRI_rep Update 1: I4R are now reproducing all published papers that use data from GDRI, or are closely related in other ways. Here is a first update on our work. 🧵
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Colin Camerer @cfcamerer.bsky.social · 24/02/2025
I4R doing the lord’s work. Hopefully these will be a collective wake up call to be more careful and transparent about complicated studies in applied micro (and elsewhere too)
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Prashant Garg @prashantgarg.bsky.social · 24/02/2025
While the (quasi-) experimental methods increase credibility of causal results, there are two related concerns that make studies hard to replicate: 1. decline in reporting of null results 2. increase in use of private sector data a mini thread 🧵based on work with @trfetzer.com
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Alexandra de Gendre @adegendre.bsky.social · 24/02/2025
Massive team work in replicating papers and cross checking samples and treatments across multiple papers — what a massive undertaking! This is evidence that journals *must* require data and code sharing. I’m wondering if anything in the peer review process could have prevented this
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Mujtaba Rahman @mijrahman.bsky.social · 24/02/2025
If anything is clear from the last few days, it's surely that Ukraine belongs in the EU
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Enkelejda Havari @enkehavari.bsky.social · 24/02/2025
Wow. This is bigger than I thought. We should be involved in the data collection as much as we are in the data analysis. Well done @i4replication.bsky.social!
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Olle Hammar @ollehammar.bsky.social · 24/02/2025
Disregarding the sadness of this story, it’s been great working with this awesome team! @jrgptrs.bsky.social @fialalenka.bsky.social @jackfitzgerald.bsky.social @flxhlzmstr.bsky.social @nikljako.bsky.social @anderskjelsrud.bsky.social @kotsadam.bsky.social @essieconomist.bsky.social
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Josh Merfeld @merfeld.bsky.social · 24/02/2025
The craziest thing about it is that if you want to believe the most “positive” interpretation, you have to agree that they’re bad at RCTs. Messy, don’t follow protocols, etc. Yet they consistently get the biggest effect sizes! It’s almost like a proof by contradiction.
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Institute for Replication @i4replication.bsky.social · 24/02/2025
This effort was only possible because these journals require data and code repositories. This allowed us to compare data across papers and identify undisclosed connections between 15 studies (e.g., overlapping samples, overlapping interventions, reused treatment assignment).
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Jack Fitzgerald @jackfitzgerald.bsky.social · 24/02/2025
As a coauthor on the AEJ:AE report, it’s a lot. Oh my god, It’s a lot. In that paper, outcomes are inconsistently handled both in the code and in the field, the paper’s data is connected to a bunch of other experiments, and we find irregularities in the raw survey files.
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Institute for Replication @i4replication.bsky.social · 24/02/2025
After being alerted about possible misconduct, the I4R are reproducing published papers that use data from a specific NGO (GDRI). This thread releases the first 2 reports and provides more information about the work and responses/statements from authors journals and journals. 🧵
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Institute for Replication @i4replication.bsky.social · 21/02/2025
This is based on our work. We will provide more information on Monday. Stay tuned and thanks Ray and Will for your help!
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Institute for Replication @i4replication.bsky.social · 21/02/2025
Sunday 9PM ET / Monday 3AM CET / Monday 1PM Melbourne! See you all then :) #EconSky
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Institute for Replication @i4replication.bsky.social · 19/02/2025
Abel: I am writing in my capacity as Chair of I4R. Last year, I was contacted by a researcher that alerted me of potential scientific misconduct in a set of papers all using data from a specific NGO.🧵
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Essi Kujansuu @essieconomist.bsky.social · 11/02/2025
I'm acutely missing the gentle after-vax nudge of try avoid going to the sauna for this one evening. #Finland #Nudge #Sauna #Vaccination
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Essi Kujansuu @essieconomist.bsky.social · 22/01/2025
I'm part of the et al., particularly, team MACHINE (AI-led). My suspicion for the finding is that the LLMs are programmed to agree too much -- you notice this sometimes just interacting with them in general.
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Jeffrey Wooldridge @jmwooldridge.bsky.social · 19/12/2024
Those who used to follow me on Twitter know that I tediously made the distinction between a model and an estimation method. In one thread, I considered regressions in a treatment effect context: Y on 1, D, X Y on 1, D, X, D*(X - Xbar) It is common to refer to the first as "OLS."
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Institute for Replication @i4replication.bsky.social · 21/05/2024
Join us for the Innsbruck Replication Games on July 5th! We are looking for faculty and graduate students; all social science fields! Participants get coauthorship to a meta-paper combining reproductions/replications! Register here: surveymonkey.ca/r/Innsbruck_...
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Essi Kujansuu @essieconomist.bsky.social · 21/05/2024
Is anyone else having problems with accessing Twitter these days? If my browser settings are too much for them to handle, I will be sad to leave, but I will not use the site anymore.
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