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Andres Montealegre

@andresm.bsky.social
697 followers 646 following 41 posts

Postdoc at Yale School of Management, interested in judgment and decision-making, research methods, and movies. andres-montealegre.com

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Reposted by Andres Montealegre
Data Colada @datacolada.bsky.social · 02/09/2026
Colada[139] Artificial Deadlines Part 2 Evidence of fraud in the 25 year old gradesheet behind the key finding in an influential paper on deadlines and procrastination. datacolada.org/139
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Data Colada @datacolada.bsky.social · 31/08/2026
An influential paper by Ariely & Wertenbroch (2002) reported two studies with tampered data. Post 1 of 2. datacolada.org/138
datacolada.org
[138] Artificial Deadlines (Part 1): Evidence of Fraud in an Influential Study About Procrastination
A new paper in Psychological Science (.htm) reports a failure to replicate Study 2 of Ariely and Wertenbroch’s influential article entitled, “Procrastination, Deadlines, and Performance: Self-Contr…
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Dr. Frisky Whisky McThicky, Ball Knower @professorpash.blacksky.app · 02/06/2026
🕊️ R.I.P. Dexter Wansel, legendary Philadelphia keyboardist, producer, and architect of the Philly soul sound. His work on “Love TKO,” “Nights Over Egypt,” and “If Only You Knew,” plus the groundbreaking “Theme from The Planets,” shaped generations of soul, funk, jazz fusion, and hip-hop. He was 75.
Man with a froMan with a fro Man with a froMan with a fro
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Daniel Lakens @lakens.bsky.social · 25/05/2026
New blog post: Evaluating Dr. Cuddy’s Claim that the Debunking of Power Posing is a Myth. daniellakens.blogspot.com/2026/05/eval... On an AI generated description of a non-existent study, incorrectly citing findings from studies, and the importance of scientific criticism.
daniellakens.blogspot.com
Evaluating Dr. Cuddy’s Claim that the Debunking of Power Posing is a Myth
In this blog post I will analyse the arguments that Dr. Amy Cuddy provided in a blog post “The "Power Posing Was Debunked" Myth: What the Re...
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Andres Montealegre @andresm.bsky.social · 10/05/2026
This seems like an interesting attempt to see how far LLMs can help with social science research. But I am not sure how much progress will come from producing more papers. What we need -I think- is figuring out how to use LLMs to produce better papers.​​​​​​​​​​​​​​​​
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Julia M. Rohrer @dingdingpeng.the100.ci · 22/04/2026
Good news everyone 🥳 Our (w @vincentab.bsky.social) primer on models as prediction machines (with the marginaleffects package) is finally officially published!> journals.sagepub.com/doi/10.1177/...
journals.sagepub.com
Models as Prediction Machines: How to Convert Confusing Coefficients Into Clear Quantities - Julia M. Rohrer, Vincent Arel-Bundock, 2026
Psychological researchers usually make sense of regression models by interpreting coefficient estimates directly. This works well enough for simple linear model...
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The Onion @theonion.com · 17/04/2026
“Don’t tell me you’ve been using particle board in here,” said the 55-year-old woodworker
theonion.com
Nick Offerman Visits Criterion Closet To Rebuild Shelves
NEW YORK—In an eight-hour-long video posted Tuesday to the Criterion Collection’s YouTube channel, actor Nick Offerman can be seen paying a visit to the Criterion Closet to rebuild the film library’s ...
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Russ Poldrack @russpoldrack.org · 02/04/2026
These are essential questions to be asking right now. Ignoring the power of these models (which are only getting smarter by the month) is a recipe for professional obsolescence for one's self and their students.
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Suyog Chandramouli @suyoghc.bsky.social · 21/03/2026
Excited to share that @russpoldrack.org will be speaking at @princeton.edu this Tuesday, March 24! Talk: "The Promise and Perils of AI-Assisted Coding in Science" 12:00 PM ET Workshop: "Testing and Validating Code Developed Using AI" 11:00 AM ET The Zoom is open to all (see flyer for details)!
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Joe Simmons @joesimmons.bsky.social · 19/03/2026
New post on Data Colada. I spent a very long time trying to figure out a figure in a methods paper that is not in my area of expertise. It shows extremely *negative* R-squared values from replications of a true effect. The question on my mind was: WHAT?? I learned some stuff. datacolada.org/134
datacolada.org
[134] Figuring Out Figure 1 - Data Colada
A few years ago our Journal Club discussed an interesting methods paper entitled, “Putting Psychology to the Test: Rethinking Model Evaluation Through Benchmarking and Prediction” (.htm). This post describes my attempt to understand what’s happening in Figure 1 of that paper, which shows that extremely simple experiments can generate extremely negative R2s. I learned a...
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Darren Dahly @statsepi.bsky.social · 18/03/2026
Every day is a good day for sharing one of the most useful papers about research data ever written. PLEASE get your people to understand and follow this advice. www.tandfonline.com/doi/full/10....
Data Organization in Spreadsheets
Karl W. Broman
& Kara H. Woo
Pages 2-10 | Received 01 Jun 2017, Accepted author version posted online: 29 Sep 2017, Published online: 24 Apr 2018

    1. Introduction
    2. Be Consistent
    3. Choose Good Names for Things
    4. Write Dates as YYYY-MM-DD
    5. No Empty Cells
    6. Put Just One Thing in a Cell
    7. Make it a Rectangle
    8. Create a Data Dictionary
    9. No Calculations in the Raw Data Files
    10. Do Not Use Font Color or Highlighting as Data
    11. Make Backups
    12. Use Data Validation to Avoid Errors
    13. Save the Data in Plain Text Files

ABSTRACT

Spreadsheets are widely used software tools for data entry, storage, analysis, and visualization. Focusing on the data entry and storage aspects, this article offers practical recommendations for organizing spreadsheet data to reduce errors and ease later analyses. The basic principles are: be consistent, write dates like YYYY-MM-DD, do not leave any cells empty, put just one thing in a cell, organize the data as a single rectangle (with subjects as rows and variables as columns, and with a single header row), create a data dictionary, do not include calculations in the raw data files, do not use font color or highlighting as data, choose good names for things, make backups, use data validation to avoid data entry errors, and save the data in plain text files.
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Pascal Mamassian @mamassian.bsky.social · 12/03/2026
A new Department of Cognitive Science is being created at Bocconi University in Milan, Italy. Here is the call for a cluster hire (for around 10 faculty) in all areas of cognitive science, at both junior and senior levels: www.unibocconi.it/en/faculty-a... Deadline: May 4th, 2026
unibocconi.it
Open Rank Faculty Cluster Hire Search for the New Department of Cognitive Science at Bocconi - Bocconi University
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Data Colada @datacolada.bsky.social · 02/03/2026
Answering the most popular question in a PhD methods course datacolada.org/133
datacolada.org
[133] Heterofriendly: The Intuition for Why You Always Need Robust Standard Errors - Data Colada
When I taught my first PhD-level methods course, I invited students to submit questions about any topic in statistics or methodology. Six out of 10 students asked about the same topic: robust & cluste...
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Ben Collins @bencollins.bsky.social · 02/03/2026
By Sam Altman, CEO, OpenAI

Published:

March 2, 2026

The human subconscious is such an interesting thing. No matter how much you think you’ve got it figured out, it’ll always spit out the most random stuff. Take me, for example. After coming home from a long day at the world’s most groundbreaking artificial intelligence organization, I’ll go to bed and have the weirdest dreams where people from the future are sobbing and begging me to change course.
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NPR @npr.org · 21/02/2026
The South Bronx bandleader took the Latin genre to new heights while recording for Fania Records. n.pr/4kLTCKV
n.pr
Willie Colón, salsa pioneer, has died at 75
The South Bronx bandleader took the Latin genre to new heights while recording for Fania Records.
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Data Colada @datacolada.bsky.social · 24/09/2025
Would p-curve work if you dropped a piano on it? datacolada.org/129
PIano being dropped on car in car testing facility
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Data Colada @datacolada.bsky.social · 23/06/2025
Colada[128] The Best Audit Study and its interesting shortcoming datacolada.org/128
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Nick Huntington-Klein @nickchk.com · 06/06/2025
The second edition of The Effect has been delayed a bit... because there were so many orders they had to switch to a bigger print run! Thank you everyone for your support, and check out the second edition here: www.routledge.com/The-Effect-A...
routledge.com
The Effect: An Introduction to Research Design and Causality
The Effect: An Introduction to Research Design and Causality, Second edition is an excellent teaching text about research design, specifically concerning research that uses observational data to make ...
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Data Colada @datacolada.bsky.social · 02/06/2025
Don't assume, plot datacolada.org/126
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Andres Montealegre @andresm.bsky.social · 08/04/2025
Does anybody know of a paper or blog discussing arguments of the form "we found our results despite this confound that works against our effect"? Essentially, how to think about confounds that go against the hypothesized or observed effect.
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Ike Silver @ikesilver.bsky.social · 22/03/2025
Really proud of this new work out @psychscience.bsky.social. Led by the amazing but bluesky-less Amanda Geiser and with @deborahsmall.bsky.social. We show that when comparing moral wrongs, people are (much) more willing to “scale up” than to “scale down” condemnation and punishment…
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Data Colada @datacolada.bsky.social · 14/03/2025
Measurement error, Nobel Prize winning research, friendly disagreements, and more.... datacolada.org/124
datacolada.org
[124] "Complexity": 75% of participants missed comprehension questions in AER paper critiquing Prospect Theory - Data Colada
Kahneman and Tversky’s (1979) “Prospect Theory” article is the most cited paper in the history of economics, and it won Kahneman the Nobel Prize in 2002. Among other things, it predicts that people ar...
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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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NPR @npr.org · 06/03/2025
The vibraphonist, composer and jazz-funk pioneer helped inspire the neo-soul movement, and his best-known song was sampled over 100 times.
npr.org
Roy Ayers, whose 'Everybody Loves The Sunshine' charmed generations, dies at 84
The vibraphonist, composer and jazz-funk pioneer helped inspire the neo-soul movement, and his best-known song was sampled over 100 times.
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Data Colada @datacolada.bsky.social · 05/03/2025
Delving into a disagreement with prominent political scientists on a fundamental data-analysis question: what do you want to learn from a regression interaction? datacolada.org/123
datacolada.org
[123] Dear Political Scientists: The binning estimator violates ceteris paribus - Data Colada
This post delves into a disagreement I have with three prominent political scientists, Jens Hainmueller, Jonathan Mummolo, and Yiqing Xu (HMX), on a fundamental methodological question: how to analyze...
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M. Nolan Gray 🥑 @mnolangray.bsky.social · 12/02/2025
Today in @worksinprogress.bsky.social, I reflect on Donald Shoup's legacy. Perhaps the most interesting question: how did the most unlikely professor kick off an international parking reform movement? substack.com/home/post/p-...
substack.com
The prophet of parking
A eulogy for the great Donald Shoup
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George Wu @geowu.bsky.social · 07/02/2025
A new working paper with Daniel Banki, @urisohn.bsky.social and Robert Walatka, just submitted to SSRN. The paper is comment on Ryan Oprea's recent AER paper. The paper is processing, but you, my friends, get early entry. papers.ssrn.com/sol3/papers....
Title Authors Abstract (Decision under Risk are Decisions Under Complexity: Comment)
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Nate Jones @kn8.bsky.social · 19/01/2025
January 19
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Chengyao Sun @chengyaosun.bsky.social · 20/01/2025
My ✨New Paper✨ (w/ Robyn LeBoeuf) is out in JEP: General! We find a robust discrepancy between people’s prediction and their own likelihood judgment. 1/n🧵 psycnet.apa.org/record/2025-...
psycnet.apa.org
APA PsycNet
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Data Colada @datacolada.bsky.social · 07/01/2025
Did a police training improve officers' behavior during arrests? A forthcoming QJE paper with a flexible pre-registration and key p-values of p=.048 & p=.051 says yes. datacolada.org/122
datacolada.org
[122] Arresting Flexibility: A QJE field experiment on police behavior with about 40 outcome variables - Data Colada
A forthcoming paper in the Quarterly Journal of Economics (QJE), "A Cognitive View of Policing" (htm), reports results from a field experiment showing that teaching police officers to "consider differ...
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Saloni @scientificdiscovery.dev · 06/12/2024
Madrid tripled the length of its metro system in just 12 years, faster and cheaper than almost any other city in the world. Left: in 1994 Right: after 2007 Cost per mile: £64–91 million (around 7x cheaper than London's Jubilee & Northern line expansions & 14x cheaper than Toronto's Ontario line)
Madrid's metro system in 1994 - diagram of metro linesMadrid's metro system after 2007 - diagram of metro lines.
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Gabriele Paolacci @gpaolacci.bsky.social · 06/12/2024
I’m looking for responses to replications that attributed failure to stimuli becoming invalid with time (e.g., Shafir and Cheek 2024 JDM on choose/reject effects), or to stimulus selection more generally. Discussions also welcome (e.g., @olegurminsky.bsky.social and Dietvorst 2024 JCR). Pointers?
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Uri Simonsohn @urisohn.bsky.social · 06/12/2024
I'm compiling types of manipulations in psychology: 1) Vignette study 2) Autobiographical ("Remember a time you ...") 3) Confederate acts some way 4) Watch video inducing emotion 5) Behavioral instruction ("talk to a stranger") 6) Prime a construct 7) Framing outcomes To contribute, reply
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Data Colada @datacolada.bsky.social · 03/12/2024
A popular tool in political science for dealing with nonlinearities in invalidated by... ...nonlinearities. datacolada.org/121
datacolada.org
[121] Dear Political Scientists: Don't Bin, GAM Instead - Data Colada
There is a 2019 paper, in the journal Political Analysis (htm), with over 1000 Google cites, titled "How Much Should We Trust Estimates from Multiplicative Interaction Models? Simple Tools to Improve ...
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Ioannis Evangelidis @ievangelidis.bsky.social · 24/11/2024
We (i.e., the marketing department at ESADE) are looking for PhD students. Please spread the word:
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Paul Goldsmith-Pinkham @paulgp.com · 25/11/2024
Man I cannot endorse this abstract more
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Andres Montealegre @andresm.bsky.social · 22/11/2024
Previous research shows that people sometimes view moral questions as objectively true, while other times treating them as true only relative to different perspectives. In our new paper, we present evidence that social rewards may explain this apparent inconsistency...
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Vincent Arel-Bundock @vincentab.bsky.social · 12/11/2024
My First R Package: Dec.5-6 I'm super excited to announce that I'll soon be teaching a short course on how to develop #RStats packages! A 📦can make your code more efficient, reproducible, and helpful to others. Please let me know if you have any questions. codehorizons.com/Seminars/my-...
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Uri Simonsohn @urisohn.bsky.social · 12/11/2024
Academics using {renv}: please check out: groundhogr.com/renv #rstats
groundhogr.com
RENV: comparing groundhog with renv – Groundhog
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Andres Montealegre @andresm.bsky.social · 31/10/2024
Request: Are there examples of replications or studies examining whether results change when tested with a larger or different sample of stimuli?
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Uri Simonsohn @urisohn.bsky.social · 25/10/2024
There is a famous article titled: "How to show 9 is bigger than 221"... It critiques between-subject comparisons. Not enough people know the result is artifactual. You only get it when using a 1-10 scale (!) So people say "well, 9 is 9 big". Change scale, no effect.
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Uri Simonsohn @urisohn.bsky.social · 18/10/2024
Is this definition as bad it seems to me?
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Dan Goldstein @dggoldst.bsky.social · 15/10/2024
Judgment and Decision Making (JDM) starter pack Happy to add you go.bsky.app/8nDKmwG
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simine vazire @simine.com · 11/01/2024
Part 1 of a two-part series on Freakonomics: Why is there so much fraud in academia? Interviews with @briannosek.bsky.social Leif Nelson, @joesimmons.bsky.social, @urisohn.bsky.social, Max Bazerman, and me. Part 2 (about what journals are doing) coming next week freakonomics.com/podcast/why-...
freakonomics.com
Why Is There So Much Fraud in Academia? - Freakonomics
Why Is There So Much Fraud in Academia? - Freakonomics
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simine vazire @simine.com · 01/12/2023
I'm thrilled to announce the new Psych Science editor team! We'll start on Jan 1, 2024. Check us out: here: www.psychologicalscience.org/public… We're spread across 15 countries in 5 continents! 🌍🌎🌏 Here’s a thread to introduce the team!
psychologicalscience.org
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Steve Haroz @steveharoz.com · 30/11/2023
The ACLU filed an incredible amicus brief in defense of @datacolada.bsky.social last week. storage.courtlistener.com/recap/gov.us...
So long as they disclose the factual basis on which they rely, researchers must be free to independently opine on academic and scientific findings—including, crucially on the veracity of research methodologies, analyses, and conclusions—without fear that doing so will subject them to costly litigation. A culture where researchers self-censor ultimately deprives the public of the benefits that come with robust academic and scientific collaboration, debate, and independent
review.
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Dan McNeish @dmcneish.bsky.social · 28/11/2023
Most papers comparing clustered data methods use biostat/econ language, so I tried to write one using psyc/ed language that covers the origin of the independence assumption, how each method handles ind. violations, and types of questions best-suited for each method psycnet.apa.org/record/2024-...
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Andres Montealegre @andresm.bsky.social · 13/11/2023
In the real world, many effects are non-linear. This new paper by @urisohn.bsky.social offers an intuitive explanation of the challenges with standard methods of testing interactions, along with a revised toolbox. In addition to changing a few lines in my R code, this changes how I think about data.
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Uri Simonsohn @urisohn.bsky.social · 07/11/2023
The Many Co-Authors platform went live yesterday. One main goal is to help junior co-authors credibly signal who was involved in data collection in their studies. Added today: figures summarizing the data. manycoauthors.org
manycoauthors.org
Main | Many Co-Authors
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Saloni @scientificdiscovery.dev · 27/10/2023
A classic chart by Max Roser: The rise and fall in smoking and lung cancer mortality over the 20th century.
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