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Protzko

@protzko.bsky.social

Experimental Psychologist, social perceptions, metascience. I study the assumptions you make. Here just trying to share good research https://sites.google.com/view/assumptionlabccsu/home

1,163 Followers  |  159 Following  |  409 Posts  |  Joined: 24.08.2023  |  1.8554

Latest posts by protzko.bsky.social on Bluesky

Absolutely! As you probably know better than anyone, finding highly able wealthy 18-year-olds who randomly don't go to college is probably incredibly difficult.

Gap year kids maybe?

08.02.2026 15:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Maybe it's my own scientism bias but it seems to me:

If something exists independent of what people say it is, it can be studied & understood.

If something only exists as what people say it is, studying people tells us what it is.

Is something missing here or are one of the premises wrong?

05.02.2026 12:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Where are the economists at who somehow have a dataset of all people wait listed at only one college who either did or did not get into college?

04.02.2026 18:38 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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every once in a while I read a paper that changes me.

If you do research involving between-Ss experiments or interpreting between-people correlations in any way (e.g. SEM)

read this paper, weep, & don't ignore the implications.

from Michael D Hunter

pmc.ncbi.nlm.nih.gov/articles/PMC...

#psych

03.02.2026 13:45 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Really crazy that so many Americans based their entire life around carrying guns to protect US from authoritarians & pedophiles, then when confronted with authoritarians & pedophiles they joined in as paramilitary terrorizing innocent civilians & protecting the pedophiles from accountability.

02.02.2026 03:28 β€” πŸ‘ 293    πŸ” 97    πŸ’¬ 5    πŸ“Œ 7
INSPECT-SR: A tool for assessing trustworthiness of randomised controlled trials | Cochrane

If you're interested in data sleuthing but aren't sure where to start,

or if you're conducting a systematic review/meta-analysis and want to ensure you're not including junk studies,

check out this Cochrane training session on Trustworthiness Assessment by @jdwilko.bsky.social

02.02.2026 18:05 β€” πŸ‘ 23    πŸ” 10    πŸ’¬ 0    πŸ“Œ 1

What is a great journal that really likes tutorial papers and re-analyses (metasciencey) that helps translate econometrics to Psychology but DOESN'T charge an APC?

#psych #meta #stats

02.02.2026 20:38 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0
Both questionable (e.g. p-hacking) and open (e.g. pre-registration) research practices are prevalent in education research. We sought to understand the explanations given by educational researchers for why either should or should not be used. Two teams of researchers independently analysed open-ended survey responses from 1488 education researchers on their feelings about questionable and open research practices. Despite using different analytic approaches, all of the major categorizations of participant responses were similar or related across teams. Our findings suggest that although respondents believe that questionable research practices should not be used, they conceded there are systemic reasons some use them. Similarly, although respondents generally support open practices, they noted situations in which they were not appropriate or necessary for education research. These findings can serve as a catalyst for training and policy initiatives.

#MetaSci #Methodology #EduSky #AcademicSky #OpenSci

Both questionable (e.g. p-hacking) and open (e.g. pre-registration) research practices are prevalent in education research. We sought to understand the explanations given by educational researchers for why either should or should not be used. Two teams of researchers independently analysed open-ended survey responses from 1488 education researchers on their feelings about questionable and open research practices. Despite using different analytic approaches, all of the major categorizations of participant responses were similar or related across teams. Our findings suggest that although respondents believe that questionable research practices should not be used, they conceded there are systemic reasons some use them. Similarly, although respondents generally support open practices, they noted situations in which they were not appropriate or necessary for education research. These findings can serve as a catalyst for training and policy initiatives. #MetaSci #Methodology #EduSky #AcademicSky #OpenSci

β€œOur findings suggest that although respondents believe that questionable research practices should not be used, they conceded there are systemic reasons some use them.”

Open Acc: doi.org/10.1098/rsos...

BSky authors: @sarahcaroleo.bsky.social, @jesse-fleming.bsky.social, @bryancook.bsky.social

01.02.2026 11:31 β€” πŸ‘ 27    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
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What drives retention in online longitudinal research? We conducted an experiment (N=1,798) on @joinprolific.bsky.social, orthogonally manipulating payment rate (Β£6–£9/hr + bonus) and session interval (1, 2, or 4 weeks) across five sessions. The findings challenge some common assumptions πŸ‘‡

29.01.2026 14:50 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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a man is holding a blender in front of a door with a star world logo on it ALT: a man is holding a blender in front of a door with a star world logo on it

My Mom: What are you working on now?

Me: A Monte Carlo simulation on the lowly correlation coefficient.

My Mom: I thought you were studying how memory biases influence prejudice against Kids These Days, why are you doing this?

Me: What does it look like Im doing?

29.01.2026 14:40 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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behold, we found great variation in how people think! Many activities that we thought would be β€œgaming” weren't & vice versa, eg half of the participants interpreted β€˜gambling’ to be β€˜gaming’. Ergo: surveying β€˜gaming’ without defining it creates data mess

28.01.2026 09:56 β€” πŸ‘ 49    πŸ” 11    πŸ’¬ 2    πŸ“Œ 2
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Nomination and selection of Nobel Peace Prize laureates - NobelPrize.org A nomination for the Nobel Peace Prize may be submitted by any person who meets the nomination criteria. A letter of invitation to submit is not required. The names of the nominees and other informati...

Some thoughts:

1. The deadline for nominating a person or group for the Nobel Peace Prize is Feb. 1.

2. History professors are qualified nominators.

3. The people of Minnesota have been awe-inspiringly peaceful in the face of state violence.

4. He would be so mad.

22.01.2026 23:56 β€” πŸ‘ 1855    πŸ” 688    πŸ’¬ 42    πŸ“Œ 84
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Me thinking I like reading #philosophy until I get hit with a sentence like this.

Seriously, who writes this, slaps it, and says that's good that's not going anywhere?

P. S. this is a footnote calling to another footnote.

22.01.2026 13:16 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Great team in a beautiful city!

22.01.2026 10:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here, we start the process towards global random sampling. We can't fully get there, but we can make steps. Our framework:

Cluster random sampling, proportional weighting, BTS, nonresponse bias correction.

osf.io/preprints/ps...

with @miguelsilan.bsky.social @grinschglsandra.bsky.social

#psych

21.01.2026 14:14 β€” πŸ‘ 6    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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If you are interested in all things ✨causal inference✨, please join our multidisciplinary Causal Inference Interest Group (CIIG). We host monthly seminars featuring speakers with various academic backgrounds and research interests.

Links below.

cc @clscohorts.bsky.social @pwgtennant.bsky.social

20.01.2026 12:35 β€” πŸ‘ 47    πŸ” 29    πŸ’¬ 1    πŸ“Œ 1

But it Is more spreadable

18.01.2026 23:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Era Postbac Fellowship | CLAD Lab | University of Notre Dame

We invite apps for our postbac fellowship in educational research and action. Postbacs engage in research on learning & learning environments, receive close mentorship from scholars across disciplines, and gain hands-on experience through community-based programs. See cladlab.nd.edu/era-fellowsh...

18.01.2026 00:00 β€” πŸ‘ 10    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0

Pour boiling water into glass/cup. Dump it out, put hot cup over butter (cup is upside down on table) . Fast softening!

18.01.2026 16:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It’s usually about 15C when I wake up lately (my landlord won’t let me install a smart thermostat) so the butter is very hard, but I’ve discovered (maybe you all already knew this) that using a vegetable peeler to get thin slices makes cold butter so easy to spread! #lifehacks 🧈

18.01.2026 12:10 β€” πŸ‘ 13    πŸ” 2    πŸ’¬ 7    πŸ“Œ 0
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When running an ANOVA (say, 3-groups), F is the omnibus test.

Translated to OLS, 2 dummy variables, the change in R2 is the omnibus test.

BUT, what if analyzing as a Structural Equation Model (in the Figure below)?

Is there something that matches the Omnibus F? Or closely approximates?

#stats

17.01.2026 13:33 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Yes, the concordance of the values is likely happenstance as the populations are different.

Reproducibility Project = P(+ result in replication | published)

This project = P(+ result | conducted)

14.01.2026 21:22 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Can you make people feel wealthier than their peers?

In two direct replications, we answer: maybe?
But if you can’t it does not transfer to things subjective SES correlate with.

Our new work with Lily Green &
@samanthajamesbrown.bsky.social

#psych #meta

osf.io/preprints/ps...

12.01.2026 14:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Great opportunity for an open science data archivist in the DC area! I was able to work with this team in 2024 through some contract work, and I highly recommend them. Please share.

06.01.2026 19:25 β€” πŸ‘ 15    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

maybe the realize the futility?

06.01.2026 20:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I'm starting to see an increase in students wanting group projects to "get to know each other better".

I always thought nothing could be more horrendous in college than a group project.

Now the students yearn for them.

06.01.2026 16:38 β€” πŸ‘ 19    πŸ” 1    πŸ’¬ 4    πŸ“Œ 0
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Behavioral Science What do we do? We conduct large-scale behavioral science studies to improve the daily decisions, behavior, and experience of vulnerable individuals (e.g., the well-being of citizens and families / ed...

Do you want to work with me?:) Please spread the word! We are looking for talented Post-doc candidates for a 10-month Junior Fellowship at the Behavioral Science Center, hosted by the Corvinus Institute for Advanced Studies (CIAS). 1/6

www.the-bs-lab.com

05.01.2026 21:16 β€” πŸ‘ 6    πŸ” 9    πŸ’¬ 1    πŸ“Œ 0

Was there a metascience study that shows how long it takes people to publish a paper on average?

I have a memory of something like x amount of months for writing revising submitting etc

#psych #metasci

05.01.2026 13:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Don't use LLMs,
To read & review papers,
This all goes away.

29.12.2025 13:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Call for Applications: Early Career Rescue Fellowship – Freiburg Institute for Advanced Studies

Post-doc positions:
"Academic freedom is under pressure today. This requires rescue havens of free research. ... [we] invite early career researchers, whose work is restricted due to political pressure in the USA..."

uni-freiburg.de/frias/call-f...

19.12.2025 17:14 β€” πŸ‘ 197    πŸ” 172    πŸ’¬ 1    πŸ“Œ 19

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