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Konstantinos Ioannidis

@doctoriw.eurosky.social
924 followers 664 following 71 posts

Postdoctoral Researcher in Economics at University of Cambridge. Find me here konstantinosioannidis.github.io

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Konstantinos Ioannidis @doctoriw.eurosky.social · 01/09/2026
If you catch me sprinting across @upf.edu this Friday, it's because I am presenting in two parallel sessions at the exact same time slot! 🔀
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Konstantinos Ioannidis @doctoriw.eurosky.social · 13/08/2026
Looking forward to present at the joint @eeanews.bsky.social / @econometric.bsky.social conference next week! If anyone is curious about a new General Equilibrium concept that takes into account the complexity of computing the optimal demand (and fits data much better than Walrasian Equilibrium)
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Konstantinos Ioannidis @doctoriw.eurosky.social · 09/06/2026
Fascinating talks by: Arnaud Dellis (@arnauddellis.bsky.social), Jacopo Magnani (@jmagnani.bsky.social), Adam Sanjurjo, Ferdinand Vieider, Keyu Wu, Ryan Oprea, Felix Fattinger, Miguel Ballester, Laurence Jin, Stephan Bucher, Hassan Andrabi, Roman Berlanger, Andreas Kapounek, and Peter Bossaerts.
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The Janeway Institute, Cambridge @janewayinstitute.bsky.social · 06/05/2026
Sign up by 15th May for the 3rd Workshop on Computational Complexity & Economic Decision Making in Cambridge on 28-29 May 2026. ➡️Find out more and register yr interest here: www.janeway.econ.cam.ac.uk/event/3rd-wo...
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Konstantinos Ioannidis @doctoriw.eurosky.social · 25/03/2026
Last week I had the pleasure and honour to give a talk on the value of preregistrations and registered reports to improve the confidence we have for science to the fascinating @againstpseudocu.bsky.social .
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Konstantinos Ioannidis @doctoriw.eurosky.social · 13/03/2026
Following others around me, I migrated successfully to eurosky. A very slow process to maintain an online presence with cerefully selected providers, but a good first step!
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Raphael Wimmer @raphaelwimmer.bsky.social · 27/01/2026
OpenAI just released Prism, a LaTeX editor with embedded ChatGPT for free. Writing a paper has never been easier. Clogging the scientific publishing pipeline has never been easier. It took me 54 seconds to write up an experiment I did not actually conduct. prism.openai.com
Screenshot of Prism - I asked it to create a methods, participants, results, and discussion seconds. It did so within 54 seconds...
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Konstantinos Ioannidis @doctoriw.eurosky.social · 12/01/2026
#EconSky New working paper 📝 - Revisit classic economic theory problem of general equilibrium existence - Fresh approach combining computer science and complexity - Theory + Lab experiment 🧵 + link👇
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Jacob Edenhofer @jacobedenhofer.bsky.social · 02/01/2026
By way of preparing for teaching and making sense of current events, I spent today trying to synthesise the demand-side literature on democratic backsliding (see figure below). The starting point of most of this literature is simple: Do voters punish politicians who violate democratic norms, or do
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Konstantinos Ioannidis @doctoriw.eurosky.social · 23/12/2025
Registered Reports are essentially a formalized, enforced version of the scientific method. They are great for reducing p-hacking and ensure informative null results get published. For any experimental economists out there, here are a few lists of journals who accept this submission format.
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Brendan Cantwell @cantb.bsky.social · 15/12/2025
1/ Microsoft Copilot (mostly) fabricated a quantitative study for me based on a one-sentence prompt. The prompt? "Generate an academic article which shows that right handed university presidents are more effective fundraisers."
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Paolo Crosetto @paolocrosetto.bsky.social · 30/11/2025
Since AI slop is again all over Scientific Reports, a thread on the economics of grey-zone publishing. Why does slop keep getting published? What does it mean for science? How can we stop this? Background readings: Understand the strain: tinyurl.com/2b6wxx5r Stop the drain: tinyurl.com/3jfscscy
An obviously AI-generated figure with AI slop and fake text all over it, recently published in Scientific Reports.
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Colin Camerer @cfcamerer.bsky.social · 04/12/2025
1/3 NEW our highly interdisciplinary review on habits is out. (psych, econ, animal learning, neuro) This link authors.elsevier.com/c/1mDCZc9~mJ... allows download until Jan 23 of next yr. It's partly aimed at a marketing academic audience, but covers a lot of ground of general interest.
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Mark A. Hanson @hansonmark.bsky.social · 11/11/2025
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing: a 🧵 1/n Drain: arxiv.org/abs/2511.04820 Strain: direct.mit.edu/qss/article/... Oligopoly: direct.mit.edu/qss/article/...
A table showing profit margins of major publishers. A snippet of text related to this table is below.

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.A figure detailing the drain on researcher time.

1. The four-fold drain

1.2 Time
The number of papers published each year is growing faster than the scientific workforce,
with the number of papers per researcher almost doubling between 1996 and 2022 (Figure
1A). This reflects the fact that publishers’ commercial desire to publish (sell) more material
has aligned well with the competitive prestige culture in which publications help secure jobs,
grants, promotions, and awards. To the extent that this growth is driven by a pressure for
profit, rather than scholarly imperatives, it distorts the way researchers spend their time.
The publishing system depends on unpaid reviewer labour, estimated to be over 130 million
unpaid hours annually in 2020 alone (9). Researchers have complained about the demands of
peer-review for decades, but the scale of the problem is now worse, with editors reporting
widespread difficulties recruiting reviewers. The growth in publications involves not only the
authors’ time, but that of academic editors and reviewers who are dealing with so many
review demands.
Even more seriously, the imperative to produce ever more articles reshapes the nature of
scientific inquiry. Evidence across multiple fields shows that more papers result in
‘ossification’, not new ideas (10). It may seem paradoxical that more papers can slow
progress until one considers how it affects researchers’ time. While rewards remain tied to
volume, prestige, and impact of publications, researchers will be nudged away from riskier,
local, interdisciplinary, and long-term work. The result is a treadmill of constant activity with
limited progress whereas core scholarly practices – such as reading, reflecting and engaging
with others’ contributions – is de-prioritized. What looks like productivity often masks
intellectual exhaustion built on a demoralizing, narrowing scientific vision.A table of profit margins across industries. The section of text related to this table is below:

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.The costs of inaction are plain: wasted public funds, lost researcher time, compromised
scientific integrity and eroded public trust. Today, the system rewards commercial publishers
first, and science second. Without bold action from the funders we risk continuing to pour
resources into a system that prioritizes profit over the advancement of scientific knowledge.
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Konstantinos Ioannidis @doctoriw.eurosky.social · 24/10/2025
🎉Awarded Cambridge Humanities Research Grants funding🙏 Together with Noriko Amano-Patiño and James Morris, we study statistical discrimination in rental economy (e.g. AirBnb), and how qualitative information in the reviews mitigates it. Glimpse here: konstantinosioannidis.github.io/research/fak...
konstantinosioannidis.github.io
The impact of qualitative reviews in online markets: Empirical and experimental evidence on racial statistical discrimination
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AEA Journals @aeajournals.bsky.social · 21/10/2025
Forthcoming in the AER: "Gender Differences in Economics Seminars" by Pascaline Dupas, Amy Handlan, Alicia Sasser Modestino, Muriel Niederle, Mateo Seré, Haoyu Sheng, Justin Wolfers, and Seminar Dynamics Collective. www.aeaweb.org/articles?id=...
aeaweb.org
Gender Differences in Economics Seminars
(Forthcoming Article) - We assess whether men and women are treated differently when presenting their economics research. We collected data across thousands of seminars, job market talks and conferenc...
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Sumitra Badrinathan @sumitra.bsky.social · 15/10/2025
🚨 out at @apsrjournal.bsky.social 🚨 ➡️ We ran a large media literacy experiment to fight misinformation ➡️ 13,500 students, 583 villages in Bihar, India ➡️Created custom misinfo curriculum of 4 months ➡️Partnered w the government to roll it out as an official course in classrooms hopeful findings👇🏽
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Lisa Walsh @lisawalsh.bsky.social · 28/09/2025
Excited to report: Academic Twitter didn’t die, it just replicated itself on Bluesky academic.oup.com/icb/article-...
academic.oup.com
Scientists no Longer Find Twitter Professionally Useful, and have Switched to Bluesky
Synopsis. Social media has become widely used by the scientific community for a variety of professional uses, including networking and public outreach. For
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Konstantinos Ioannidis @doctoriw.eurosky.social · 02/09/2025
After two years, I am so happy to be back to the ESA conference in Brno hosted by @econmuni.bsky.social. Looking forward to catching up with colleagues. :) If you are curious to see how computational complexity interacts with general equilibrium, attend my talk on Saturday 10:40-11:40.
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Claire Willett @clairewillett.bsky.social · 20/07/2025
this is one of my ultimate “could never get away with this today” movies genuinely an impeccable way to teach kids that poverty is an artificial social construct and the cops use violence to enforce it also Friar Tuck is one of cinema’s greatest Catholics I am serious
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lastpositivist.bsky.social @lastpositivist.bsky.social · 19/07/2025
I decided to make a long blog post combining general sociological things I am aware of with personal observations of cultural and lifestyle differences between the UK and USA. sootyempiric.blogspot.com/2025/07/comp...
sootyempiric.blogspot.com
Comparisons Between Life in the UK and the USA
For most of my life I have lived in the UK, but for six years I lived in the United States of America. Somewhat erratic and unpleasant polit...
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Konstantinos Ioannidis @doctoriw.eurosky.social · 02/06/2025
I have attended this interdisciplinary conference multiple times in the past, and I always learned a great deal from it. Whether you come from computer science, economics, criminology or other fields, I highly recommend attending it.
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Konstantinos Ioannidis @doctoriw.eurosky.social · 06/05/2025
We're delighted to be organising the 2nd Workshop on Computational Complexity & Economic Decision Making at University of Cambridge. ➡️Newnham College ➡️19-20th May 2025 ➡️Register by 11th May: bit.ly/3EGSGqA
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Konstantinos Ioannidis @doctoriw.eurosky.social · 23/03/2025
BEE-UK is a network of UK-based experimental economists established in June 2024. They organise a range of activities including an annual conference. Anyone interested in behavioural and experimental economics, especially PhD students, are welcome. Join with the link below. www.bee-uk.org/join-now/
bee-uk.org
Join now - Behavioural & Experimental Economists UK
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Konstantinos Ioannidis @doctoriw.eurosky.social · 21/03/2025
ESA is an amazing community to be part of, I have enjoyed the conferences for year after year and looking forward to visiting Brno this year!
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Konstantinos Ioannidis @doctoriw.eurosky.social · 11/03/2025
Currently in Pittsburgh until May for a research visit, drop me a line if you're around! Thank you to @alistairecon.bsky.social at #universityofpittsburgh and Steve Spear at @carnegiemellon.bsky.social for hosting me.
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Konstantinos Ioannidis @doctoriw.eurosky.social · 24/02/2025
Online experiments have taken a credibility blow recently because of LLMs. As experimental economists and behavioural scientists, we need to think of how we address this issue moving forward.
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Konstantinos Ioannidis @doctoriw.eurosky.social · 26/01/2025
My academic website cost me >100£ per year for domain+hosting. Over the holiday break, I made a brand new one on Github where it is competely free. I had fun learning programming/web-design tricks, and I am now happy to share with the world. Find me here konstantinosioannidis.github.io
konstantinosioannidis.github.io
Welcome!
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Konstantinos Ioannidis @doctoriw.eurosky.social · 20/12/2024
Together with my colleagues Robert Woods and Hassan Andrabi, we are very grateful and excited to have received the 2024 Vernon L. Smith Young Talent Award, for our proposal, "Markets or Patents? A Comparative Study on Incentivising Collective Innovation".
expfin.org
2024 Vernon L. Smith Young Talent Award - Society for Experimental Finance
In 2024, the Society for Experimental Finance awarded two Vernon L. Smith Young Talent Awards for the best research proposals in finance using experimental methodology. Each award comes with $4,000 fo...
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