florianederer.bsky.social - Profile | ThreadSky | a Reddit-style client for Bluesky

"But how is this economics?" www.thepeakmagazine.com.sg/influence/it...

submitted 19 hours ago • 0 comments

The past really sticks. Even after 4 generations, your great-grandfather’s economic status still largely shapes your own. 👉 33% persistence across time for whites 👉 But racial inequality is the key driver The American Dream? More inherited than we thought. www.nber.org/papers/w33923

submitted 4 days ago • 0 comments

AI + social media = polarization machine 🧠📱 Recommender systems trap users in echo chambers and ad-based platforms profit from partisan division. www.nber.org/papers/w33892

submitted 4 days ago • 1 comment

Koijen & Yogo's (2019) demand system approach transformed asset pricing by linking portfolio data to demand elasticities. But why are estimated elasticities so low (around 1) when classical models say they should be much higher? Enter Fuchs, Fukuda & Neuhann (2025)

submitted 11 days ago • 1 comment

🚨 BlackRock, Vanguard & State Street are being sued for allegedly colluding to cut coal output via ESG. The case tests the common ownership theory and a win "would embolden and encourage others to bring similar lawsuits." Big case. Big implications. www.bloomberg.com/news/article...

submitted 11 days ago • 0 comments

Why do dictators target the socially isolated? 📢 New theory by @ksonin.bsky.social: Propaganda works best when people are either totally atomized or tightly unified rather than in between. 🎯 Optimal strategy? Don’t focus on influencers. Target the fringes of the network.

submitted 16 days ago • 1 comment

The #MeToo movement led to a 10% jump in sex crime reports and the effect lasted over 2 years. ✅ More reporting ✅ More arrests ❌ Not just more crimes ✅ Impact across race & income Social movements can change high-stakes behavior. papers.ssrn.com/sol3/papers....

submitted 16 days ago • 0 comments

Common leadership (two firms sharing executives or board directors) contributes to collusion. Collusion probability between two firms increases by 12 percentage points after the onset of common leadership, compared to only 1.2 percent in the absence of common leaders. www.nber.org/papers/w33866

submitted 18 days ago • 0 comments

"Boomers without Borders" would be an amazing title for this paper. Portugal quadrupled its number of foreign retirees by offering them 10 years of income tax-free retirement. Some countries (e.g., Finland) responded by taxing pensions at the source.

submitted 18 days ago • 0 comments

Harvard Business School has removed Francesca Gino from its website. Her profile was up as recently as May 13 but is now gone. web.archive.org/web/20250513...

submitted 26 days ago • 1 comment

🚨 High-speed internet is hurting teen mental health, especially girls. More screen time Less sleep Less studying Less real-life socializing And when they're distressed they go online, not offline. www.sciencedirect.com/science/arti...

submitted 26 days ago • 1 comment

🚨 DOJ & FTC just weighed in on common ownership: ✅ Passive index investing? Protected. ✅ Shareholder advocacy? Protected. ❌ Using stakes in competitors to cut output across an industry? Not protected. Antitrust safe harbors don't shield anticompetitive common ownership.

submitted 29 days ago • 0 comments

Political advertising on Facebook and Instagram before the 2020 US election had no effect. www.nber.org/papers/w33818

submitted 31 days ago • 1 comment

LLM adoption boosts the quantity of scientific papers that researchers write by 25.7-89.3%, with the strongest quantity effects for East Asian scholars and in the social sciences. But the papers are worse. Another quantity-quality tradeoff! yianyin.net/index.html

submitted 35 days ago • 3 comments

Do Private Equity and Other Investors Harm Competition in the Pharmaceutical Industry? Common ownership among rivals and “rollup” deals of smaller pharmaceutical firms by private equity provide strong reasons for antitrust authorities to increase their scrutiny. www.promarket.org/2025/05/15/d...

submitted 36 days ago • 1 comment

A new study with almost 300 Chinese student subjects replicated the main findings of our Management Science paper (Ederer & Manso 2013) that short-term pay-for-performance and lack of tolerance for early failure inhibit innovation. So happy to see this experiment still making waves!

submitted 38 days ago • 0 comments

The Journal of Economic Literature has a book review of @aedmans.bsky.social's excellent book "May Contain Lies" ... ... but I'm ever so slightly disappointed that it does not discuss the most important part of the book. 😂

submitted 42 days ago • 0 comments

One last research lunch with my amazing PhD student @asil_aslihan before she's off to her new job as law professor at @DukeLaw! Advising her was an immense privilege because her work brilliantly combines industrial organization, antitrust, and legal scholarship.

submitted 42 days ago • 0 comments

This graph by my colleague Tim Simcoe might be the most important one in recent US business history. It's a key reason why the DOJ won the Google adtech case. Google's average impressions are so much greater than its nearest rivals that Google appears as a statistical outlier.

submitted 44 days ago • 2 comments

This is an incredibly important paper. If you're an antitrust scholar and you're getting paid hundreds of thousands of dollars by a dominant monopolist as expert witness in a lawsuit that's in your research area, shouldn't you disclose that work on your CV? www.nber.org/papers/w3364...

submitted 45 days ago • 3 comments

The DOJ is pushing for a breakup of Google's adtech business, specifically calling for the separation of AdX, Google’s ad exchange platform. The process would be managed by a divestiture trustee, with the government retaining the authority to approve or reject any proposed buyer.

submitted 46 days ago • 1 comment

One day I won't have to wait up till nearly midnight for antitrust court filings. But today is not that day.

submitted 46 days ago • 1 comment

Found my Halloween costume according to @florianederer.bsky.social

submitted 48 days ago • 1 comment

I also got a plaque on Wednesday. #twoforone

submitted 49 days ago • 0 comments

Pharmacy chains like CVS are putting national-brand products behind plexiglass and are leaving the cheaper CVS-branded versions out in the open, right next to them. Is this just a shrinkage deterrent or a clever nudge to boost high-margin house brands?

submitted 49 days ago • 2 comments

Back at it

submitted 49 days ago • 0 comments

I'm delighted to receive the BU Questrom 2025 MBA Core Faculty Award ... ... all thanks to my amazing TA Nicole Zeller who was also honored in today's ceremony.

submitted 51 days ago • 2 comments

Jon Levin, the current Stanford President, was an advisee of Paul Klemperer at Nuffield College. Mark Carney, the current and likely future Prime Minister of Canada, was an advisee of Meg Meyer at Nuffield College. Meg and Paul are my favorite economics power couple.

submitted 53 days ago • 2 comments

There already exists a published paper!

submitted 53 days ago • 3 comments

Could we please stop trying to make #antitrust fit some ideology and just focus on making markets work? #competition #markets #economics #econsky

submitted 53 days ago • 0 comments

Does an NBER paper released in a week in which there are fewer other NBER working papers have better outcomes (e.g., more downloads, more citations, ...)? @paulgp.com

submitted 53 days ago • 3 comments

Temporary tariffs cause a recession. www.nber.org/papers/w33726

submitted 53 days ago • 0 comments

Education widens the financial literacy gap between men and women. Women's financial literacy plateaus after college — men's keeps rising. drive.google.com/file/d/1Uh5V...

submitted 53 days ago • 0 comments

Common ownership harms welfare ... even with free entry. www.aeaweb.org/articles?id=...

submitted 53 days ago • 0 comments

seeing some joke comments about the subject matter of this paper so it seems important to clarify that studying competition between platforms and the effect of regulations in a setting with potentials for truly massive externalities is just a very high value added activity for economists to do

submitted 56 days ago • 1 comment

Economics is what economists do

submitted 56 days ago • 2 comments

Jeffrey Pfeffer: "Similarity as a basis for interpersonal judgment applies in many contexts, not just academia. Watch out if you seem ‘different.'" poetsandquants.com/2025/04/25/a...

submitted 56 days ago • 0 comments

Thanks @florianederer.bsky.social for posting our recent paper with @leonardomadio.bsky.social, Matt Mitchell and Martin Quinn!! A further summary by Leo is here: bsky.app/profile/leon... #econsky

submitted 57 days ago • 1 comment

Pornhub's removal of all non-verified content led to a 41% drop in traffic within 1 month. Much of the displaced traffic was absorbed by competing platforms, including less regulated fringe websites (+55% visits) and mainstream competitors (+10%). papers.ssrn.com/sol3/papers....

submitted 57 days ago • 3 comments

Instagram leads to depression and anxiety for women under 25. www.nber.org/papers/w33697

submitted 58 days ago • 1 comment