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Jason Roos

@jmtroos.bsky.social
341 followers 176 following 171 posts

Assoc Prof of Marketing at Rotterdam School of Management, Erasmus U • Lately: causal inference, econometrics, psychometrics, tomfoolery

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Jason Roos @jmtroos.bsky.social · 23/06/2025
I'm not overfull...>>sob<<...YOU'RE overfull
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Jason Roos @jmtroos.bsky.social · 23/06/2025
These are the days of procrastination and progress
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Jason Roos @jmtroos.bsky.social · 01/05/2025
Elrond Halfelven sounds like a real asshole
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Jason Roos @jmtroos.bsky.social · 23/04/2025
You may have just solved a seven-hour-old mystery for me! My best guess was a feral parakeet
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Rafe Meager (they/them) @economeager.bsky.social · 26/03/2025
it's easy to think that academia is outdated, worthless etc but the fact that we are consistently the first targets for repression by dicators and wannabe dictators suggests we are still doing something useful and good for free societies despite our best efforts to fucking suck super bad
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Jason Roos @jmtroos.bsky.social · 25/03/2025
Great job everyone, we did it
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Martina Pocchiari @martinapocchiari.com · 22/03/2025
On the way to #Berlin to present at the Digital Economy Workshop @diw.de @bsoeberlin.bsky.social On the agenda: ``Digitization and Community Participation'' w/@jmtroos.bsky.social, now featuring a new dataset covering 600K+ events, 400K+ individuals in 12K local communities in 2024 (200M+ rows...)
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Rachel Lichtman @rachellichtman.bsky.social · 20/03/2025
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Jason Roos @jmtroos.bsky.social · 18/03/2025
Whisks are 100% Bouba.
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Jason Roos @jmtroos.bsky.social · 11/03/2025
@shire-reckoning.bsky.social hasn't posted in the last day and now I'm worried Sauron found the one ring
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Alex Genevsky @genevsky.bsky.social · 05/03/2025
Our latest paper on #Neuroforecasting is out at @pnasnexus.org (w/ Brian Knutson and Lester Tong) A short 🧵 tinyurl.com/e4279exp
academic.oup.com
Neuroforecasting reveals generalizable components of choice
Abstract. Accurate forecasts of population-level behavior critically inform institutional choices and public policy. While neuroforecasting research sugges
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Jason Roos @jmtroos.bsky.social · 06/02/2025
I'm checking this every day, great deals on heavy (5+ lbs) ashtrays
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Jason Roos @jmtroos.bsky.social · 06/02/2025
* All authors contributed equally and are listed in order of emotional neediness.
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Jason Roos @jmtroos.bsky.social · 04/02/2025
This is what the Internet was meant for
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Jason Roos @jmtroos.bsky.social · 27/01/2025
Remember that email is a replacement for physical letters, which used to arrive only after spending the better part of a week on a train.
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Jason Roos @jmtroos.bsky.social · 23/01/2025
Same
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Jason Roos @jmtroos.bsky.social · 23/01/2025
For consistency in a decision theoretic framework. I mean, you can define "near" anyway you like, but if you want to make a theoretical argument, you might have a problem.
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Jason Roos @jmtroos.bsky.social · 23/01/2025
A potential problem with the proposal is that "near" takes on different meanings when using the mean (L2, SD) versus median (L1, MAD). I prefer median when talking about people -- means often describe people who don't exist, medians are less prone to this
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Antonia Krefeld-Schwalb @krefeldschwalb.bsky.social · 10/01/2025
I often find myself arguing for why I do impact-driven research on climate adaptation and sustainable behavior. These projects are often long, messy and with unclear outlets that not always count for career progression in my field.
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Jason Roos @jmtroos.bsky.social · 09/01/2025
Dashes en – em are always good choices
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jamelle @jamellebouie.net · 05/01/2025
god “black cow” is such a groove
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Pedro Sant’Anna @pedrosantanna.bsky.social · 30/12/2024
Here are the first five sets of slides: 01 Introduction: psantanna.com/DiD/01_Intro... 02 Classical 2x2 setup: psantanna.com/DiD/02_two_b... 03 Clustering issues: psantanna.com/DiD/03_Clust... 04 Functional form: psantanna.com/DiD/04_Funct... 05 Covariates: psantanna.com/DiD/05_Covar...
psantanna.com
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Jason Roos @jmtroos.bsky.social · 24/12/2024
Where is Parson Brown during the events of the song? Or better yet—*what* is Parson Brown?
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Dan Goldstein @dggoldst.bsky.social · 19/12/2024
The area of Andorra is 470 square kilometers (180 square miles). To put it in perspective, the area of San Jose, CA is 180 square miles. So Andorra is about 2.5 times bigger than Lichtenstein or DC. Lichtenstein has about 40,000 people, Andorra has about 80,000.
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Jason Roos @jmtroos.bsky.social · 19/12/2024
Do Andorra next
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Jason Roos @jmtroos.bsky.social · 16/12/2024
It's a useful analogy, and highlights how AI gets vilified by virtue of being new. I remember academic scare around Wikipedia. But there are also differences: Wikipedia is in principle traceable back to a source. And did anybody hype Wikipedia as a replacement for creating original works?
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Jason Roos @jmtroos.bsky.social · 16/12/2024
In any case my point was simply that calling the thing that everybody is referring to when they AI "evil" isn't an obviously wacko position to take. I can see where that comes from.
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Jason Roos @jmtroos.bsky.social · 16/12/2024
I think the actual contents of the "public" data is where a lot of the vitriol originates from. I mean, can any foundation model be said with certainty not to contain any unauthorized content? I'm not especially bothered by it, but I also don't create art for a living.
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Jason Roos @jmtroos.bsky.social · 16/12/2024
I don't think they are evil per se, but I can understand why, e.g., an artist whose copyrighted work was ingested into a text or image generator, and then encounters claims that these things can generate original writing or art, why they might reach for "evil" to describe all that.
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Jason Roos @jmtroos.bsky.social · 06/12/2024
Skeletor torments He-Man with powerful intuition about Bayesian reasoning and the nature of information
Skeletor disturbing facts meme. Top panel depicts Skeletor lounging on the floor, probably in his lair at Snake Mountain, and reads, "Monte could have shown you either door, He-Man." Bottom panel shows Skeletor running away down a corridor and reads, "He *chose* to show you the one with a goat." 

There is an implied backstory in which He-Man was a contestant on Let's Make a Deal, had the opportunity to switch doors, *didn't* switch doors, and won a goat. Skeletor is now tormenting He-Man by providing intuition for how Monte's choice provided information about which door the car was behind. 

Man I love Skeletor, so much. What a fantastic character.
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Jason Roos @jmtroos.bsky.social · 03/12/2024
I think some behavioral researchers would run an experiment if there was an 80% chance the effect were true but not if it were 70%. (And I don't think this is related to the sacred 1-beta = 0.8 power threshold; you'd get the same flip at 75% and 65%.)
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Jason Roos @jmtroos.bsky.social · 03/12/2024
Paging @benzero.bsky.social
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Jason Roos @jmtroos.bsky.social · 03/12/2024
Just want to point out there are three drumsticks on the table, which raises questions about how large the dinner party is and why the beleaguered diner in the center doesn't just move to the kids' table (or maybe they're arguing about politics there too?)
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Jason Roos @jmtroos.bsky.social · 03/12/2024
I've decided I'm now the Monte Hall problem meme guy, this is a Monte Hall meme account now
Cap'n Crunch Oops All (blank) meme, but for Monte Hall and Goats. Monte's face is where the Cap'n's should be, and the cereal box reads "Monte Hall's Oops! All GOATS". Contrary to the claim on the packaging, the cereal bowl depicted contains a mix of delicious crunch berries and two goats.
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Jason Roos @jmtroos.bsky.social · 02/12/2024
I really thought I had moved past being surprised by your food takes. And then you casually pull this one out and I realized how little I understand about the world.
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Jason Roos @jmtroos.bsky.social · 29/11/2024
63,001 if I can just find a dealer
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Jason Roos @jmtroos.bsky.social · 29/11/2024
Just the social permission I've been waiting for so I can finally Try Drugs
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Jason Roos @jmtroos.bsky.social · 28/11/2024
Friends, this site has the juice.
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The Onion @theonion.com · 26/11/2024
Prague's Kafka International Named Most Alienating Airport
youtube.com
Prague's Kafka International Named Most Alienating Airport
YouTube video by The Onion
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Jason Roos @jmtroos.bsky.social · 26/11/2024
That was my intro as well. I was in transit, moving from the US to NL, and the head of dept at the time called to explain Dirk had just resigned and not to freak out if I saw it in the news...
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Paul Goldsmith-Pinkham @paulgp.com · 25/11/2024
Man I cannot endorse this abstract more
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Martina Pocchiari @martinapocchiari.com · 23/11/2024
We are #hiring a #predoctoral fellow in "Artificial intelligence, digital environments, polarization and echo chambers of opinion" in our marketing research group at Esade, with opportunity to join our #PhD program. Send your CV and academic record to: research@esade.edu
Call for application for the predoc position with admin details on the grant that finances the position.
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Steph Tully @stephtully.bsky.social · 23/11/2024
I’ve officially given up X and am reengaging here. Academic Twitter is dead and I can’t in good conscience support that platform. All the marketing, management, psych, econ, and JDM folks, let me know where you are!
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Jason Roos @jmtroos.bsky.social · 20/11/2024
This post just brought to mind Randee of the Redwoods, so I guess my long-term memory still works?
Randee of the Redwoods, an MTV character from the early 90's, posing against a blue backdrop. He's wearing yellow Chucks, blue pants with white stars, a pink, white, and black hippy top with bell sleeves that end at the elbow, sunglasses with only one lens, and a scarf tied as a headband; he's holding an electric guitar. His right hand is raised in a fist, either because he's about to hit a power chord, or less likely, because he's making the universal sign of political solidarity.
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Jason Roos @jmtroos.bsky.social · 20/11/2024
Everybody's gonna need to up their cosplay game, this is unbelievably good
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Jason Roos @jmtroos.bsky.social · 20/11/2024
This is amazing -- just from the hat and sunglasses I thought to myself "be seeing you," and then I noticed the jacket, button, bicycle, the entire set... So yeah, this is perfect in every way...
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Jason Roos @jmtroos.bsky.social · 20/11/2024
I think it went like this: The designers made a version with the new typeface and a version of the cat drawn with a constant line width to match the font weight. The cat almost certainly looked like a royalty-free SVG so they scrapped it.
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Jason Roos @jmtroos.bsky.social · 20/11/2024
Go with "natural value" for the 19th century vibes
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Jason Roos @jmtroos.bsky.social · 17/11/2024
That album is worth the price at any price
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Jason Roos @jmtroos.bsky.social · 15/11/2024
We're all commies in business schools too, sorry.
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