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Peter Reinhard Hansen

@profphansen.bsky.social
296 followers 119 following 133 posts

Econometrian and Latene Distinguished Professor in Economics at UNC, Chapel Hill. Previously: EUI, Stanford, Brown.

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Reposted by Peter Reinhard Hansen
Brian Wecht @bwecht.bsky.social · 16/07/2026
Come see me in LA, Sydney, and Christchurch with The Skeptics’ Guide to the Universe!
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Peter Reinhard Hansen @profphansen.bsky.social · 17/06/2026
Congrats!
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Peter Reinhard Hansen @profphansen.bsky.social · 17/06/2026
It’s almost too good to be true… but you can map an empirical correlation matrix into approximately uncorrelated and standardized variables. The generalized Fisher transform makes this possible. Link to latest draft of working paper with Ilya Archakov. #GFT #Econometrics
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Reposted by Peter Reinhard Hansen
arXiv econ.EM Econometrics @econem-bot.bsky.social · 18/05/2026
Peter Reinhard Hansen, Chen Tong: Tweedie's Formula, Variance Functions, and Score-Driven Updating arxiv.org/abs/2605.15902 arxiv.org/pdf/2605.15902 arxiv.org/html/2605.15902
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Reposted by Peter Reinhard Hansen
Retraction Watch @retractionwatch.com · 22/03/2026
"That’s why the Center for Scientific Integrity, the nonprofit organization behind Retraction Watch, has launched a new annual award celebrating scientists who discover substantial errors in their published work and take meaningful steps to correct the scientific record."
science.org
ScienceAdviser: Hidden culprit found for puzzling static electricity
Today in Science and science: Turning cellular powerhouses into therapies, a comet falls apart, and more
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Reposted by Peter Reinhard Hansen
Leonid Schneider @forbetterscience.bsky.social · 03/03/2026
The Misunderstanding of Henrik Thorlacius forbetterscience.com/2026/03/03/t...
forbetterscience.com
The Misunderstanding of Henrik Thorlacius
“Potential repetitive areas presumably arise from the residual bulk image (RBI) phenomenon of the CCD camera, in which structures may be digitally repeated due to charge residues in the camer…
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Peter Reinhard Hansen @profphansen.bsky.social · 03/03/2026
North Carolina Sen. Thom Tillis to Kristi Noem: "I don't know if we'll have time for you to respond, because I'm giving you a performance evaluation here." 🔥🔥🔥 www.youtube.com/watch?v=Jijg...
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Paul Offit @pauloffit.bsky.social · 24/02/2026
What RFK Jr.’s CDC Doesn’t Want You to Know open.substack.com/pub/pauloffi... RFK Jr.'s CDC is hiding information about outbreaks of vaccine-preventable diseases.
open.substack.com
What RFK Jr.’s CDC Doesn’t Want You to Know
The CDC is withholding critical information about vaccine-preventable diseases from the American public. Why?
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Dorit Reiss @doritreiss.bsky.social · 09/10/2025
"A study... showed that last season’s 2024–2025 mRNA COVID vaccines reduced people’s risk of emergency department visits by 29 percent, their risk of hospitalizations by 39 percent and their risk of death by 64 percent. ”" www.scientificamerican.com/article/new-...
scientificamerican.com
Annual COVID Vaccines Save Lives, New Study Shows
A new study shows that receiving an updated COVID vaccine reduced people’s risk of severe disease and death in all age groups, regardless of immunity from prior infection or vaccination
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Peter Reinhard Hansen @profphansen.bsky.social · 05/10/2025
I guess that’s the kind of governing body that thinks this is a good idea.
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Peter Reinhard Hansen @profphansen.bsky.social · 04/10/2025
It’s rare, but not unheard of, for non-monarchs to put their faces on coins.
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Reposted by Peter Reinhard Hansen
PubPeer @pubpeer.com · 29/09/2025
Congrats to anonymous commenter Gymnothorax javanicus, winner of the August PubPeer Award for a comment on a 2025 @natneuro.nature.com paper. To claim the $1000 prize, log in with the same account and add a follow-up comment with contact info (that won't be published by moderators).
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Reposted by Peter Reinhard Hansen
Eric Hillebrand @erichillebrand.bsky.social · 26/09/2025
Forskerforum has written a piece about my unfortunate experience with the Danish Office for Naturalization (in Danish) dm.dk/forskerforum...
dm.dk
For international til at blive dansker
AU-professor Eric Hillebrand troede, at det efter 13 år i Danmark som fastansat forsker ville være en formssag at få statsborgerskab. Men nej – han rejser for meget.
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Peter Reinhard Hansen @profphansen.bsky.social · 20/09/2025
More volatility and uncertainty from the White House. An abrupt rule change for H1B visa holders. This is not in 🇺🇸 interest.
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Peter Reinhard Hansen @profphansen.bsky.social · 18/09/2025
Read about it here: pubpeer.com/publications... pubpeer.com/publications... and here: www.linkedin.com/posts/peter-... #EconSky #ResearchIntegrity #Economics #Finance @pubpeer.com
pubpeer.com
PubPeer - Dynamic connectedness between energy markets and cryptocurre...
There are comments on PubPeer for publication: Dynamic connectedness between energy markets and cryptocurrencies: evidence from the Covid-19 pandemic (2023)
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Peter Reinhard Hansen @profphansen.bsky.social · 18/09/2025
A surprising result. Let X = Harasheh et al. (2023,Table 1) Y = Ha (2023, Table 1) Z = Table in image Then X - Y = Z.
Offsets between Harasheh et al. (2023,Table 1) and Ha (2023, Table 1)
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Peter Reinhard Hansen @profphansen.bsky.social · 18/09/2025
I added comments on additional papers on @pubpeer.com and wrote up a LinkedIn article. #EconSky #ResearchIntegrity #Economics #Finance #PaperMills @datacolada.bsky.social @retractionwatch.com @elisabethbik.bsky.social www.linkedin.com/posts/peter-...
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Peter Reinhard Hansen @profphansen.bsky.social · 18/09/2025
Who said ❄️❄️❄️
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Peter Reinhard Hansen @profphansen.bsky.social · 16/09/2025
These are just two of many articles in #Economics journals that I have found similar issues with -- some are in journals with Impact Factors >10. I plan to comment on additional papers, but there more than I will have time to address. #EconSky #OpenScience @pubpeer.com @datacolada.bsky.social
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Peter Reinhard Hansen @profphansen.bsky.social · 16/09/2025
Instead of replying on PubPeer, the lead author of the other paper emailed me directly, which didn’t address why the figures are virtually indistinguishable. I encourage them to post a short reproducibility package and link it on PubPeer, so readers can verify. pubpeer.com/publications...
pubpeer.com
PubPeer - Revisiting overconfidence in investment decision-making: Fur...
There are comments on PubPeer for publication: Revisiting overconfidence in investment decision-making: Further evidence from the U.S. market (2023)
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Peter Reinhard Hansen @profphansen.bsky.social · 16/09/2025
Coşkun et al. (2023) looks legit: based on a PhD dissertation; data/code on GitHub; public post on LinkedIn. Yet this specific figure doesn’t match their data on Github. Also, signs suggest the upper panel is returns (±), and lower panel is volume (>0).🤔 pubpeer.com/publications...
pubpeer.com
PubPeer - Which return regime induces overconfidence behavior? Artific...
There are comments on PubPeer for publication: Which return regime induces overconfidence behavior? Artificial intelligence and a nonlinear approach (2023)
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Peter Reinhard Hansen @profphansen.bsky.social · 16/09/2025
I recently wrote my first comments on @pubpeer.com Two papers—different assets & sample periods—appear to use the same figure. How did one plot end up representing different variables? #EconSky #OpenScience @elisabethbik.bsky.social @datacolada.bsky.social
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Einstein Foundation Berlin @einsteinberlin.bsky.social · 14/03/2025
🏆 Research integrity consultant and image forensics expert @elisabethbik.bsky.social has uncovered fraudulent data in over 7,600 scientific papers and exposed the practices of ‘paper mills’ that produce counterfeit scientific articles. She is honoured with the €200K Individual Award. Congrats!
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Peter Reinhard Hansen @profphansen.bsky.social · 12/09/2025
Hi @pubpeer.com Have written many comments and have many yet to address. I believe I follow guidelines, but some posts end up as: "comment moderated by admin (For further information, please consult our commenting guidelines)". But I cannot figure out why. Can anyone help? Below is an example.
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Reposted by Peter Reinhard Hansen
Elisabeth Bik @elisabethbik.bsky.social · 03/09/2025
After the break, we will continue with the next session: "Authorship and Integrity Issues", introduced and moderated by Lex Bouter @lexbouter.bsky.social‬ The first speaker (program change) is Tim Kersjes with 'Paper Mill Use of Fake Personas to Manipulate the Peer Review Process' #PRC10
Tim Kersjes in front of his title slide
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Peter Reinhard Hansen @profphansen.bsky.social · 02/09/2025
Give the man a break. At 73, a few minutes of blissful peak performance is impressive. #UNC If you don’t know better — it’s $10M well spent.
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
Full paper here: arxiv.org/abs/2410.23587 Moments by Integrating the Moment Generating Function co-authored with Chen Tong (Xiamen). I believe this result is useful in many fields. Anyone know the proper outlet for this type of result? #arXiv #OpenScience arxiv.org/abs/2410.23587
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
The CMGF method provides a simple integral formula that yields fractional, absolute, central, and even complex moments — without relying on the density function or any derivatives. For example, E|X|^0.7 or tail moments E[(X - ξ)^3 1{X > ξ}]. It is fast: NIG example:
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
he new method avoids derivatives entirely, is fast, general, and easy to implement. We call it CMGF, because it uses a complex argument for the MGF (also nests the characteristic function). And it applies to complex moments too. #Physics
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
Unfortunately, for fractional moments — or in dynamic models where MGFs are defined recursively — computing derivatives can be difficult, slow, or even infeasible. Existing methods often involve fractional derivatives or integrals with messy expressions.
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
It's well known that the k-th integer moment is given by the k-th derivative of the MGF evaluated at zero. This is simple, clean, and taught in many probability courses. But it has limitations. It only works if you want an integer moment, and can take the derivatives you need.
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Peter Reinhard Hansen @profphansen.bsky.social · 03/08/2025
We have discovered a new way to compute moments of a random variable with a moment-generating function (MGF). All sorts of moments. #Statistics #Probability #Econometrics
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Peter Reinhard Hansen @profphansen.bsky.social · 02/08/2025
Faculty experience—or even a PhD—is not essential for every university leader, despite research and education being what we do. However, when no one in university leadership has it, this can be the outcome 👇 @UNC www.theassemblync.com/education/hi...
theassemblync.com
In Emails, UNC’s Provost Said Chancellor Approved Tenure Delay
Chris Clemens wrote in an email obtained by The Assembly that Chancellor Lee Roberts agreed to delay tenure votes for financial reasons.
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Peter Reinhard Hansen @profphansen.bsky.social · 02/08/2025
I suspect that the leadership at Columbia includes one person with faculty experience or at least a PhD. We are not so lucky.
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Peter Reinhard Hansen @profphansen.bsky.social · 02/08/2025
Ducimur ab stultis.
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Peter Reinhard Hansen @profphansen.bsky.social · 28/07/2025
The new Prius is likely to receive a mixed reception.
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Peter Reinhard Hansen @profphansen.bsky.social · 22/07/2025
Vingegaard og Pogacar var begge bedre end Bjarne Riss, Jan Ulrich, og Pantani på toppen. Imponerende præstation i dag. #TdF
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Peter Reinhard Hansen @profphansen.bsky.social · 22/07/2025
Vingegaard præstation i dag var “the best long climbing performance ever” på trods af Pogacar var 2 sek. hurtigere. 6.52 ᵉW/Kg for 54:32 min. lanternerouge.com/2025/07/22/h...
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Peter Reinhard Hansen @profphansen.bsky.social · 22/07/2025
Det er samme stigning, blot målt med forskelligt begyndelsessted. “The climb rises, gently at first, more than 20km from base to summit. But the real climbing is 15.9km from base to summit, which is what the times below are for.” www.stickybottle.com/blog/pro-cyc...
stickybottle.com
Pro cycling’s 55 fastest ever times up Mont Ventoux full climb - Sticky Bottle
Yesterday’s ride by Nairo Quintana on Mont Ventoux at Tour de la Provence saw him break the (unofficial) record for the climb as far as Chalet Reynard. That’s a 9.5km stretch, though the road continue...
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Peter Reinhard Hansen @profphansen.bsky.social · 22/07/2025
44:56 Pogacar 44:58 Vingegaard Slog de lige Pantani's rekord med over et minut? #TdF
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Peter Reinhard Hansen @profphansen.bsky.social · 19/07/2025
#SlavaUkraine fra Dix Park, Raleigh, NC.
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Peter Reinhard Hansen @profphansen.bsky.social · 18/07/2025
Ser kommentarer som ser dette som tegn på doping, og jeg undrede mig også sidste år, hvor Vingegaard og Pogacar begge havde præstationer på Armstrong/Riss niveau. Men der har været forbedringer af grej og hypoxic training som delvist (og lovligt) giver samme effect som EPO. #LivingHighTrainingLow
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Peter Reinhard Hansen @profphansen.bsky.social · 17/07/2025
Pogačar's tid var imponerende. Ifølge CyclingGraphs var præstationen 6.74 ᵉW/Kg for 35:11 min 🔴 på grafen for Pogačar præstationer frem til TdF 2022, hvor Vingegaard vandt på Hautacam 🟣 6.32 ᵉW/Kg for 36:37 min
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Peter Reinhard Hansen @profphansen.bsky.social · 17/07/2025
Det lyder rigtigt (for Tour de France etaper). Eftersom Riss var 49 sekunder hurtigere end #2 i 1996. Vingegaard tid i dag ~37:18 var ganske fin (men langsommere end 2022). www.domestiquecycling.com/en/news/poga...
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Mikael Olai Milhøj @mikaelmilhoj.bsky.social · 17/07/2025
Trumps handelskrig er et stort opgør med en den regelbaserede frihandel, der er et vigtigt fundament for en moderne markedsøkonomi som den amerikanske. På tilsvarende vis er uafhængige centralbanker en vigtig del af fundamentet. En utrolig vigtig del, faktisk
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Khoa @khoavuumn.bsky.social · 12/07/2025
Every econ debate about immigration:
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Anders Puck Nielsen @anderspucknielsen.dk · 07/07/2025
If Donald Trump wanted to give Russia a helping hand with their summer offensive, it would look exactly like what we are seeing. That is my point in this video, where I also discuss the air war and give a status on the frontline situation. #Ukraine
youtube.com
War update – Is Trump helping Russia now?
YouTube video by Anders Puck Nielsen
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Acyn @acyn.bsky.social · 30/06/2025
Tillis: What do I tell 663,000 people in two years, three years, when President Trump breaks his promise by pushing them off of medicaid because the funding's not there anymore, guys?
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Peter Reinhard Hansen @profphansen.bsky.social · 26/06/2025
I agree with Mississippi Free Press: ‘FAFO’ is a Depraved Way to Respond to Suffering.
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