Marcus Crede
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marcuscrede.bsky.social
Marcus Crede
@marcuscrede.bsky.social
1.1K followers 390 following 590 posts

Grumpy IO psychologist with an interest in research methods, meta-science and personality. Views are my own and not those of my employer.
Begrawe my hart op Klein Tambotieboom en strooi my as oor die Bosveld horison

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Psychology 54%
Business 15%
Posts Replies Media Videos

Reposted by Marcus Credé

mjbsp.bsky.social
mark brandt @mjbsp.bsky.social · 3d
In the spirit of designs to test mediation, I might also recommend these two articles

academic.oup.com/jrsssa/artic...

journals.sagepub.com/doi/full/10....

Reposted by Marcus Credé

daveyfwright.bsky.social
Dr. Davey F. Wright ⛏️🦕🧬 @daveyfwright.bsky.social · 4d
One of many things the pro-AI crowd doesn't seem to understand is the very important distinction between academic scholarship and the production of papers. Of course they can be related but they're not necessarily the same thing

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 4d
I am actually impressed that my kiddo and her friend group all seem to be way more level-headed than I ever was at that age.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 6d
and boy are they succeeding.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 6d
The "auto-dubbed" version of German ski commentary is just horrifically awful and hilarious. Is there absolutely no quality control here?
youtu.be/tixgRrKThwo?...
Super-G für die Geschichtsbücher | Highlights deutsch | Gröden | Ski Alpin | Männer | Weltcup
YouTube video by Eurosport Deutschland
youtu.be

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 7d
No, the difference in grades between the two conditions is what I am looking for. Is that reported anywhere? The "mediated" effect estimate is not very meaningful in the light of the endogeneity.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 8d
Do you report the difference in grades between the two conditions in study 3 somewhere? Perhaps I missed it.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 13d
Can I assume that using cross-sectional self-report data to draw causal inferences is even worse than asking AI? Because that is what 80% of "management" research appears to be.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 14d
Missed that. Thanks.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 14d
What a shit show. Looking at the Big Five inter-correlations it is pretty clear that whatever they are assessing it is not personality.
Also apparently predictive power goes down a lot when adding more variables to model (Table 5)?

Reposted by Michael E. Mann, Laurence H. Tribe, Brendan Nyhan , and 16 more

pbump.com
Philip Bump @pbump.com · 16d
Every part of this is bonkers. The intro is bonkers. The transition to his health is bonkers. The mention that other presidents didn't need cognitive exams is bonkers. The claim that this screening test is somehow hard is bonkers. The idea that criticism of him is treason is bonkers. All of it.
There has never been a President that has worked as hard as me! My hours are the longest, and my results are among the best. I’ve stopped Eight Wars, saving many millions of lives in the process, created the Greatest Economy in the History of our Country, brought Business back into the United States at levels never seen before, rebuilt our Military, created the Largest Tax Cuts and Regulation Cuts, EVER, closed our open and very dangerous Southern Border, when previous Administrations were unable to do so, and created an “aura” around the United States of America that has led every Country in the World to respect us more than ever before. In addition to all of that, I go out of my way to do long, thorough, and very boring Medical Examinations at the Great Walter Reed National Military Medical Center, seen and supervised by top doctors, all of whom have given me PERFECT Marks — Some have even said they have never seen such Strong Results. I do these Tests because I owe it to our Country. In addition to the Medical, I have done something that no other President has done, on three separate occasions, the last one being recently, by taking what is known as a Cognitive Examination, something which few people would be able to do very well, including those working at The New York Times, and I ACED all three of them in front of large numbers of doctors and experts, most of whom I do not know. I have been told that few people have been able to “ace” this Examination and, in fact, most do very poorly, which is why many other Presidents have decided not to take it at all. Despite all of this, the time and work involved, The New York Times, and some others, like to pretend that I am “slowing up,” am maybe not as sharp as I once was, or am in poor physical health, knowing that it is not true, and knowing that I work very hard, probably harder than I have ever worked before. I will know when I am “slowing up,” but it’s not now! After all of the work I have done with Medical Exams, Cognitive Exams, and everything else, I actually believe it’s seditious, perhaps even treasonous, for The New York Times, and others, to consistently do FAKE reports in order to libel and demean “THE PRESIDENT OF THE UNITED STATES.” They are true Enemies of the People, and we should do something about it. They have inaccurately reported on all of my Election Results and, in fact, were forced to apologize on much of what they wrote. The best thing that could happen to this Country would be if The New York Times would cease publication because they are a horrible, biased, and untruthful “source” of information. Thank you for your attention to this matter. MAKE AMERICA GREAT AGAIN!

Reposted by Dorothy Bishop, John Kennedy, James P. Collins , and 26 more

scientificdiscovery.dev
Saloni @scientificdiscovery.dev · 16d
Big new blogpost!

My guide to data visualization, which includes a very long table of contents, tons of charts, and more.

--> Why data visualization matters and how to make charts more effective, clear, transparent, and sometimes, beautiful.
www.scientificdiscovery.dev/p/salonis-gu...
screenshot of my post

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 18d
A little too accurate.
jhammersley.bsky.social Jonathan Jingle Hammersley PhD☃️❄️🎅🎄🦌 @jhammersley.bsky.social · 18d
Do you get emotional passing by abandoned malls? Still occasionally drink from hoses? Is your version of tech support "blow on it first, hit it second?" Still refer to any media as "a tape?" Is your style a faded band tee & flannel?

Maybe YOU could be The Most Gen X Man:
youtu.be/xUPHuka1HzU?...
The Most Gen X Man in the World - Dos Equis Ad
YouTube video by Null Parade
youtu.be

Reposted by Marcus Credé

jhammersley.bsky.social
Jonathan Jingle Hammersley PhD☃️❄️🎅🎄🦌 @jhammersley.bsky.social · 18d
Do you get emotional passing by abandoned malls? Still occasionally drink from hoses? Is your version of tech support "blow on it first, hit it second?" Still refer to any media as "a tape?" Is your style a faded band tee & flannel?

Maybe YOU could be The Most Gen X Man:
youtu.be/xUPHuka1HzU?...
The Most Gen X Man in the World - Dos Equis Ad
YouTube video by Null Parade
youtu.be

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 21d
Asking once again that researchers spend even half as much time thinking about design, sampling, and measurement as they do tinkering with their favorite R package to analyze and present their results.

Reposted by Brian A. Nosek, Brendan Nyhan, Linda J. Skitka , and 8 more

jordanaxt.bsky.social
Jordan Axt @jordanaxt.bsky.social · 24d
New paper in press at JPSP! An adversarial collaboration focusing on a large-scale test of how strongly implicit racial attitudes predict discriminatory behavior. Pre-print here: osf.io/preprints/ps...

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 24d
This is bonkers.

Reposted by Richard S.J. Tol, Brian A. Nosek, Brendan Nyhan , and 35 more

Reposted by Graeme S. Cumming, Lesley A. Hall, Stephen D. Murphy , and 2 more

nataliegreenpeer.bsky.social
Natalie Bennett @nataliegreenpeer.bsky.social · 26d
Yes, Jared Diamond was wrong.

Rapa Nui's people did not suffer ecological and social collapse. They adapted to changed circumstances and thrived.

And they were nothing like "primitive"

phys.org/news/2025-11...
Studies show how the giant statues on Rapa Nui were made and moved—and what caused the island's deforestation
Rapa Nui, also known as Easter Island, is often portrayed in popular culture as an enigma. The rationale is clear: The tiny, remote island in the Pacific features nearly 1,000 enormous statues—the moa...
phys.org

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 27d
Amazing! Your students are incredibly lucky to have you do this with them.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 28d
Sour cherry pie is first, second, and third. All other pies have been disqualified for being a waste of space.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · 29d
I've emigrated twice in my life - once as a kid and once as a young adult. Now I find myself vaguely considering a third such move. People who've been through that process (and moved or stayed), how did you make this kind of decision? What factors did you consider or wish you had considered?

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · Nov 21
A method that seems designed to allow researchers to draw causal conclusions from single-source, concurrent observational data is a problem. The management literature is awash with this nonsense. Sure, the users are to blame but PROCESS seems almost designed to facilitate this nonsense.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · Nov 21
Supply chains are completely insane. Here I am, in a small town in central Iowa in November, and I can buy a perfectly ripe Pomegranate for $1 at a store that is a block away from my house.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · Nov 20
At some point Harvard will surely figure out if they just keep hiring awful people or if they also turn previously non-awful people into awful people.

Reposted by Cas Mudde, Jonathan M. Gilligan, Christopher R. Matthews , and 7 more

jayvanbavel.bsky.social
Jay Van Bavel, PhD @jayvanbavel.bsky.social · Nov 19
One of the giants of social psychology was a serial sexual harasser.

This new report reveals how Miles Hewstone touched, bullied, and sexual harassed numerous women during his 18 years at the University of Oxford. It's amazing how often bullying and sexual harassment go together in academia.

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · Nov 19
Observational data? ✅
Nonsensical moderated mediation model? ✅
Complete absence of open science practices? ✅
Sample size of 44? ✅
impossible standard deviations? ✅
Publication in management journal? ✅

Exorbitant salary to all involved? ✅

marcuscrede.bsky.social
Marcus Crede @marcuscrede.bsky.social · Nov 19
So sorry for your loss Simine. 😢 We don't deserve dogs and yet they put up with us.

Reposted by David J. Hughes, Marcus Credé

gordonhodsonphd.bsky.social
Gordon Hodson @gordonhodsonphd.bsky.social · Nov 19
#AcademicSky

Using PISA data, analysis shows that:

✳️ traditional teaching methods (lecturing, memorization & repetition of tasks) ==> better math learning.

✳️ "Innovative" teaching ==> worse math learning.

Effects amplified among low SES kids.

www.sciencedirect.com/science/arti...
The effect of teaching strategies on student achievement: An analysis using TALIS-PISA-link
The present study investigates the effects of different teaching strategies on student achievement using data from the so-called TALIS-PISA link creat…
www.sciencedirect.com

Reposted by Felicity Callard, Lindsay M. Tedds, Dana R. Fisher , and 4 more

elienyc.bsky.social
ElieNYC @elienyc.bsky.social · Nov 19
I know that at this point it's a subplot in the Epstein files drama, but I feel compelled to point out, once again, that Larry Summers HAS NO BUSINESS teaching students at ANY university ever again!

My latest cries into the abyss, in @thenation.com

www.thenation.com/article/soci...
Why Is Larry Summers Still Employed?
The revelations about the economist’s attempts to pressure a women into a “relationship”—with guidance from Jeffrey Epstein—should finally disqualify him from teaching students.
www.thenation.com