iiinova — where your digital self keeps evolving

Protzko @protzko.bsky.social · 10/09/2026

Do small effects really accumulate to make big effects? Not really. And certainly not when there are other causes on the thing you are looking at. Which, you know, is always. From Berggren & @jkflake.bsky.social journals.sagepub.com/doi/pdf/10.1... #psych

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Protzko @protzko.bsky.social · 09/09/2026

Now in press! Kids These Days!...aren't really changing that much; at least, not on child behavior problems since 1980s. Some improvements, some decrements, but In > 418,000 kids from nationally-representative samples, no real change. from Zsofia Takacs & Boglarka Vekety doi.org/10.1007/s105...

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Protzko @protzko.bsky.social · 20/08/2026

We use correlation (r) a lot. We use it for test-retest reliability Prediction/memory accuracy Trait stability, But we should not. In a new simulation study, we show r is upwardly biased & doesn't tell you what you want. We show you what does (Table 2). osf.io/preprints/ps... #psych #stats

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Protzko @protzko.bsky.social · 11/08/2026

What do researchers believe the replication rate of their field is? What do they think is an acceptable %? Lots of debate but not a lot of data; so we asked! 1,826 researchers in 11 fields said they thought ≈56% of studies in their field are replicable, <≈ 60% is a problem. osf.io/preprints/ps...

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Protzko @protzko.bsky.social · 16/07/2026

Always love when I can't get my files off osf. Who needs data and code anyway?

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Protzko @protzko.bsky.social · 15/07/2026

Autobiographical memories cued w/neutral words, ¼ of the time are about moral themes. Those themes revolve around being the actor of morally good acts, good agent memories are thought to have occurred more recently than our failures. From Dorthe Berntsen psycnet.apa.org/fulltext/202... #psych

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Protzko @protzko.bsky.social · 29/06/2026

Another notch in the Dead Internet Theory's belt: Now the majority of visits to websites comes from bots more than from humans. That is probably why every website is now throwing up captcha's to even visit. radar.cloudflare.com/traffic#bot-...

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Protzko @protzko.bsky.social · 25/06/2026

In 82,939 US/UK/Canadian adults, scores on perfectionism scales have been increasing since the late 80s. Largest component increasing is concern over making mistakes. From @thomascurran.bsky.social www.apa.org/pubs/journal... #psych

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Protzko @protzko.bsky.social · 17/06/2026

Referring to an economic policy as redistributing $ from wealthy to the poor lowers Republicans’ support. Instead, saying the policy increases $ for the poor or workers is better. From @davidbroska.bsky.social Jonne Kamphorst & @robbwiller.bsky.social #psych #polysci osf.io/preprints/so...

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Protzko @protzko.bsky.social · 03/06/2026

More preregistered cognitive dissonance without choice findings! Choosing for people makes them rationalize they like the task more. From @kurtmunz.bsky.social papers.ssrn.com/sol3/Deliver... #psych

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Protzko @protzko.bsky.social · 02/06/2026

The Australia teen social media ban is in full swing! 25% of teens are following it... And, teens view those who do follow the ban as less popular. Compliers report spending more quality time with friends and family. From Leonardo Bursztyn www.nber.org/system/files... #psych

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Protzko @protzko.bsky.social · 27/05/2026

Nostalgia doesn’t mean the future looks dim, that’s declinism. But inducing one causes increases in the other. Inducing declinism increases nostalgia & also decreases support for investing in AI tech. From Jianning Dang, @timwildschut.bsky.social journals.sagepub.com/doi/pdf/10.1... #psych

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Protzko @protzko.bsky.social · 20/05/2026

Teaching DAGs sounds easy, until students actually have to make one themselves. A new tutorial lays out simple steps to make it clear and easy for students to understand. Draw process, selection, outcome, confounds. From Nathan J. Quimpo & Peter M. Steiner files.osf.io/v1/resources... #psych

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Protzko @protzko.bsky.social · 13/05/2026

A century of suicide shows its cyclical nature. Causes of death go up, causes of death go down. Suicide is much more cyclical. Overall declining But suicide has been increasing in men since the 1950s... must be all those bowling leagues… From Nina de Lacy www.pnas.org/doi/pdf/10.1... #psych

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Protzko @protzko.bsky.social · 12/05/2026

k-12 tutoring interventions fadeout. But why? Meta-analysis of 42 studies with at-risk low SES students, effects fade not for methodological reasons, but because treatment group increases slower than the control group. From Jens Dietrichson www.researchgate.net/profile/Jens... #psych

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Protzko @protzko.bsky.social · 30/04/2026

LLM’s fail the false Muller-Lyer illusion, clearly it is because they don’t have carpentered corners! But seriously, traps like these can catch bots tin online studies. From @felipemaffonso.bsky.social academic.oup.com/jcr/advance-... #psych #metasci

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Protzko @protzko.bsky.social · 29/04/2026

We like to talk a lot about conducting more research in non WEIRD samples, but do we do it? No. 20 years of research, and even in 2024 our publications are still largely U.S. and Europe. From Alison Jane Martingano psycnet.apa.org/record/2027-... #psych #meta

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Protzko @protzko.bsky.social · 27/04/2026

RIP to Time Sharing Experiments in Social Psychology (TESS). #meta #psych

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Protzko @protzko.bsky.social · 21/04/2026

Gen-Z is souring on AI Fun rundown on new Gallup data I got to talk a little bit about. In short, why shouldn't they? Companies are talking about not hiring early career people. Students using it to breeze through school. I use Ai everyday, and it is so dumb. www.bloomberg.com/news/newslet...

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Protzko @protzko.bsky.social · 14/04/2026

original post: www.reddit.com/r/mturk/comm... turkoptican: www.reddit.com/r/mturk/comm... Dissertation: escholarship.org/content/qt1s...

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Protzko @protzko.bsky.social · 14/04/2026

'Bubble Hell' refers to online studies that are pages and pages of bubbles. They hate it. The term was coined by a redditor on the subreddit r/mturk on Mar 4, 2014. Later picked up by the co-founder of the subreddit Turkoptican, Six Silberman, used in his dissertation. Now an industry term. #psych

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Protzko @protzko.bsky.social · 31/03/2026

I actually hope I'm wrong here. We use the correlation (r) a lot. Test-retest reliability Prediction/memory accuracy Trait stability We should not; in a new simulation study, r is upwardly biased & doesn't tell you what you want. We show what does (Table 2). osf.io/preprints/ps... #psych #stats

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Protzko @protzko.bsky.social · 25/03/2026

Why do we think people who share 1similarity with us are more similar to us in other ways? We think we have an essence, & they share that same essence. But if flips if they come from a different political party (e.g. it is a one-off). From Charles Chu psycnet.apa.org/record/2027-... #psych

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Protzko @protzko.bsky.social · 19/03/2026

A threat to many fields of research wanting to conduct longitudinal evaluations is participants may remember their previous answers. Retest reliability, memory accuracy, long-term effects of interventions. We instead show people don't remember what they last said. doi.org/10.31234/osf... #psych

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Protzko @protzko.bsky.social · 10/03/2026

In the Andromeda galaxy, just one galaxy over, there USED to be a star. And now it is gone. Swallowed up by a Black hole. From Kishalay De www.science.org/doi/10.1126/... #phdsky

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Protzko @protzko.bsky.social · 04/03/2026

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

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Protzko @protzko.bsky.social · 24/02/2026

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

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Protzko @protzko.bsky.social · 03/02/2026

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

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Protzko @protzko.bsky.social · 22/01/2026

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.

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Protzko @protzko.bsky.social · 21/01/2026

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

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Protzko @protzko.bsky.social · 17/01/2026

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

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Protzko @protzko.bsky.social · 12/01/2026

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...

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Protzko @protzko.bsky.social · 22/12/2025

Fuck! Swearing may make you a little bit stronger. In 2 preregistered studies, swearing every 2s increases static strength vs. saying a neutral word. From Richard Stephens & colleagues psycnet.apa.org/fulltext/202... #psych #exercise

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Protzko @protzko.bsky.social · 25/11/2025

Corrections to misinformation work & may increase perceptions of truth & feelings towards the target of the misinfo! For 1-2 weeks at best. From @jhchae.bsky.social, Groeling, & @hyunjinsong.bsky.social academic.oup.com/joc/advance-... #psych We need to see how long our interventions last!

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Protzko @protzko.bsky.social · 24/11/2025

Fasting for 8-48 hours shows no major effect on cognitive abilities. Longer fasting shows even less cognitive effects, but there may be some small 8-hour effects. Therefore, lunch to lunch is probably best for a 24hour fast. From Bamberg & @davidmoreau.bsky.social psycnet.apa.org/psycarticles...

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Protzko @protzko.bsky.social · 11/11/2025

Draw 2 boxes: exposure & outcome on opposite sides of screen. Draw 3 causes of exposure w arrows going from cause to exposure. Draw 3 unique causes of outcome same way. Draw 3 causes for each of the 6 causes. Connect any of left side of screen to right side of screen. Repeat until out of causes

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Protzko @protzko.bsky.social · 30/10/2025

Sending 3yolds (N = 588) to Montessori preschools causes increases in theory of mind, letter-word identification ability. Lottery study with followup through Kindergarten! Excited to see the longer-term results of this study! From Angeline Lillard www.pnas.org/doi/pdf/10.1... #psych

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Protzko @protzko.bsky.social · 15/10/2025

Kids These days…are LESS shy than they were 20 years ago. According to parent-reported shyness, it is going down among 4-5 year olds. From Louis A. Schmidt link.springer.com/article/10.1... #psych

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Protzko @protzko.bsky.social · 14/10/2025

In between-Ss experiments: without a reference point, people say playing a prank is bad but give the same ‘bad’ rating to committing a war crime. Not in within-Ss experiments or when giving reference points for judgments. From @vladchituc.bsky.social www.crockettlab.org/s/1-s20-S001... #psych

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Protzko @protzko.bsky.social · 13/10/2025

TIL Emily Dickinson extensively used the Em Dash in her poetry. This provides irrefutable proof that she used Chat GPT to write her poems and pass them off as her own. #poetry #phdsky

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Protzko @protzko.bsky.social · 01/10/2025

Even if you tell people cognitive biases are good & lead to good outcomes, we still think they have the bias less than others. Only when we see the bias as very desirable we might think we are = to others on it. From @cruzf.bsky.social & André Mata link.springer.com/content/pdf/... #psych #phdsky

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Protzko @protzko.bsky.social · 29/09/2025

We should fear common method variance; especially in self-report scales. A nonsense likert scale ‘predicts’ later relationship satisfaction. We are getting results using methods when we are measuring nothing. From @datingdecisions.bsky.social journals.sagepub.com/doi/pdf/10.1... #psych #stats

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Protzko @protzko.bsky.social · 25/09/2025

Hostile and benevolent sexism are both on the decline in 1,097 studies, N = 339,740 since 1996. Note that "3" on these scales is already a neutral response. Even bigger progress in countries with more hostile sexism. From Matthew D. Hammond psycnet.apa.org/psycarticles... #phdsky #psych

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Protzko @protzko.bsky.social · 24/09/2025

We have to start finding out how long our interventions last. So we did. Manipulating people’s belief in free will works, & lasts for somewhere between less than a day to 1 week at best. Our new paper, led by @olivergenschow.bsky.social & with @sebraem.bsky.social osf.io/7ftsk_v1/dow... #psych

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Protzko @protzko.bsky.social · 23/09/2025

Chimpanzees in the wild of Uganda & Cote d’Ivoire have about 1.4 – 2.6 drinks-worth of alcohol per day in over-ripened fruit. That’s about the same amount per day as modern humans. From Aleksey Maro www.science.org/doi/10.1126/... #primateresearch #phdsky

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