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Protzko

@protzko

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

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24.08.2023
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Latest posts by Protzko @protzko

Wrote my first Monte Carlo simulation paper and this is almost word for word in the limitations section

08.03.2026 17:20 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Four more days left to apply for a Postdoctoral Research Fellowship in the Social Science Collaborartory.

For the right candidate, I'm upping the offer: I will double the supply of toy dinosaurs that come with this position πŸ¦•

06.03.2026 18:00 πŸ‘ 11 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

You can be living in a literal bubble due to having no immune system, HIV doesn't just develop.

08.03.2026 17:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Since when does smoking cause HIV?

08.03.2026 17:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Pooh meme: bored, I don't know anything about this... smug: this is beyond the scope of the paper

Pooh meme: bored, I don't know anything about this... smug: this is beyond the scope of the paper

editing some writing atm...

05.03.2026 12:57 πŸ‘ 100 πŸ” 27 πŸ’¬ 1 πŸ“Œ 1
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We have written a simple, plain-language, no equations & minimal jargon tutorial for experimentalists on why you can't drop people who don't take your treatments or follow your instructions.

with re-analyses & recommendations!

with @samanthajamesbrown.bsky.social

osf.io/preprints/ps...

#psych

04.03.2026 11:58 πŸ‘ 10 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
Preview
A crowdsourced megastudy of 12 digital single-session interventions for depression in US adults Nature Human Behaviour - An online experiment compared 12 brief online interventions for depression. Most improved mental health immediately, but these gains decreased over time, with only two...

Our crowdsourced megastudy comparing a diverse set of 12 single-session interventions for depression is out today in @nathumbehav.nature.com!

Read the full paper here: rdcu.be/e6pzz (no paywall)

We also published a brief non-academic piece about the study today: theconversation.com/free-10-minu...

02.03.2026 15:41 πŸ‘ 39 πŸ” 18 πŸ’¬ 1 πŸ“Œ 3
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‼️ Postdoc recruitment

Want to help build and understand the future of scientific collaboration? We are seeking a postdoc in computational meta‑science.

πŸ“ UF (Gainesville, FL)

πŸ’° $55–60k (1-3 years)

🧠 High intellectual agency

πŸ“… Deadline March 10

Send us your idea. Details attached!

02.03.2026 17:00 πŸ‘ 8 πŸ” 12 πŸ’¬ 1 πŸ“Œ 1

I always hated doi links in references; a pain to find them.

But NOW it is a great way to check for LLM-hallucinated references.

And this, in evolutionary biology, is called a spandrel.
Something that evolved for one purpose but now serves a different purpose (or none at all).

#phdsky

28.02.2026 14:21 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
An old man drinking coffee. In the first panel he is looking at a computer. In the second panel he turns and looks at the reader.

Text, panel 1: "Yesterday I was an expert on contract law."

Text, panel 2: "Today I am an expert on war."

An old man drinking coffee. In the first panel he is looking at a computer. In the second panel he turns and looks at the reader. Text, panel 1: "Yesterday I was an expert on contract law." Text, panel 2: "Today I am an expert on war."

Oh, Bluesky. Never change.

28.02.2026 14:06 πŸ‘ 9 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1

Just a plea from a struggling stats instructor, could we possibly debate why Type I sums of squares is the default in the base R anova functions

26.02.2026 19:08 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

The last SPSP (2015, Long Beach) I went to was so toxic, I haven't been back.
I've been told that was unusual and because of the Reproducibility project: Psychology.
Now I am going back to my first SPSP since then.
I sure hope the SCORE project isn't released this week...

#psych #meta

25.02.2026 14:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

🧠 Job alert! Tenured Associate Professor in Neuroscience at Université de Toulouse, France (CLLE/CNRS)
Cognition Γ— Language Γ— Neuroimaging
πŸ“… Open Mar 3 β†’ Deadline Apr 3 | Interviews May
πŸ”— odyssee.enseignementsup-recherche.gouv.fr
#Neuroscience #AcademicJobs #CognitiveScience
🧡 More details:

24.02.2026 09:34 πŸ‘ 2 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0
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I love this kind of stuff.

The oldest sewn clothing has been found.

Shoes and hides sewn together, along with animal traps, found in Oregon.

Made about 10,000 years ago.

From Richard L. Rosencrance

www.science.org/doi/pdf/10.1...

#phdsky

24.02.2026 13:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Best line about fadeout!

17.02.2026 17:00 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Registered Reports are the way forward

12.02.2026 14:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Great team here!

12.02.2026 12:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Our lab has the capacity to test ~500 uni students each semester
If you’re a researcher in cognitive psychology or metascience and need data collection support, we’d love to collaborate. We can help collect high-quality data from a large student sample.
Get in touch to discuss potential projects!

12.02.2026 12:18 πŸ‘ 26 πŸ” 22 πŸ’¬ 3 πŸ“Œ 0

I'd love to see an American Culinary Class Wars where the judges are Thomas Keller and Guy Fieri and they are always 100% blind to who cooked what.

11.02.2026 13:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Nmin = 51?

10.02.2026 21:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I have a suspicion researchers have a quantity, let's call it Nmin.

Where any study whose sample size is below Nmin, REGARDLESS OF STATISTICAL POWER, is summarily ignored.

It makes doing within subjects experiments irksome.

Social psychologists' Nmin average seems around 200-250.

#meta #psych

10.02.2026 18:37 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
NO BOOKS FOR BOYS

Juvenile Literature a Thing of the Past in America, Says Hezekiah Butterworth

Author of the Zig-Zag Journeys Says Boys Are Growing Up Too Fast
--The Minneapolis Journal, 25 Apr 1903

NO BOOKS FOR BOYS Juvenile Literature a Thing of the Past in America, Says Hezekiah Butterworth Author of the Zig-Zag Journeys Says Boys Are Growing Up Too Fast --The Minneapolis Journal, 25 Apr 1903

1903

10.02.2026 01:10 πŸ‘ 55 πŸ” 11 πŸ’¬ 2 πŸ“Œ 3

Anytime you see a product criticized for "hacking your dopamine reward system"

and it is not a chemical substance,

they just mean it's enjoyable.

That's it.
The product is enjoyable.

09.02.2026 14:07 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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 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 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 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 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 πŸ‘ 289 πŸ” 94 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 πŸ‘ 24 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 πŸ‘ 0 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0