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
https://sites.google.com/view/assumptionlabccsu/home
Power analyses are all fine and dandy until your power analysis comes back with you needing N = 34 people to have 90% power, you run the study with N = 34, get the effect, and no one believes your study because your sample size is so small.
November 7, 2025 at 4:01 PM
Power analyses are all fine and dandy until your power analysis comes back with you needing N = 34 people to have 90% power, you run the study with N = 34, get the effect, and no one believes your study because your sample size is so small.
Reposted by Protzko
Good to see that some people are still reading the full paper and not only the abstract. I think Science would thank you if it can. :)
November 7, 2025 at 8:10 AM
Good to see that some people are still reading the full paper and not only the abstract. I think Science would thank you if it can. :)
Reposted by Protzko
Can reading one article change your belief in free will? New studies say maybe—but the effect doesn’t last. Our beliefs might be more resilient than they seem
New work by @olivergenschow.bsky.social
@protzko.bsky.social @sebraem.bsky.social 💡
New work by @olivergenschow.bsky.social
@protzko.bsky.social @sebraem.bsky.social 💡
a man pointing to a sign that says believe
ALT: a man pointing to a sign that says believe
media.tenor.com
November 6, 2025 at 9:18 PM
Can reading one article change your belief in free will? New studies say maybe—but the effect doesn’t last. Our beliefs might be more resilient than they seem
New work by @olivergenschow.bsky.social
@protzko.bsky.social @sebraem.bsky.social 💡
New work by @olivergenschow.bsky.social
@protzko.bsky.social @sebraem.bsky.social 💡
Reposted by Protzko
Rob Chavez gives the helpful/correct answer below, but here's another thought:
Your preprint gets to be your director's cut. Put that baby on OSF or Zenodo and add a link in your figure caption.
Your preprint gets to be your director's cut. Put that baby on OSF or Zenodo and add a link in your figure caption.
"Journal style does not allow 3-dimensional figures. Please rework Figure 5 into a figure with only 2 axes if possible"
a man in a suit and tie is smoking a cigarette while sitting in an airplane .
ALT: a man in a suit and tie is smoking a cigarette while sitting in an airplane .
media.tenor.com
November 5, 2025 at 10:29 AM
Rob Chavez gives the helpful/correct answer below, but here's another thought:
Your preprint gets to be your director's cut. Put that baby on OSF or Zenodo and add a link in your figure caption.
Your preprint gets to be your director's cut. Put that baby on OSF or Zenodo and add a link in your figure caption.
International research collaborations run into international problems: Embargoes, authorship conflicts, ethical use agreements. This should not be the way.
We propose a framework, a memorandum of understanding between countries, to allow free collaboration between researchers
osf.io/preprints/ps...
We propose a framework, a memorandum of understanding between countries, to allow free collaboration between researchers
osf.io/preprints/ps...
OSF
osf.io
November 5, 2025 at 1:49 PM
International research collaborations run into international problems: Embargoes, authorship conflicts, ethical use agreements. This should not be the way.
We propose a framework, a memorandum of understanding between countries, to allow free collaboration between researchers
osf.io/preprints/ps...
We propose a framework, a memorandum of understanding between countries, to allow free collaboration between researchers
osf.io/preprints/ps...
Reposted by Protzko
The package formerly known as papercheck has changed its name to metacheck! We're checking more than just papers, with functions to assess OSF projects, github repos, and AsPredicted pre-registrations, with more being developed all the time.
scienceverse.github.io/metacheck/
scienceverse.github.io/metacheck/
Check Research Outputs for Best Practices
A modular, extendable system for automatically checking research outputs for best practices using text search, R code, and/or (optional) LLM queries.
scienceverse.github.io
November 3, 2025 at 4:20 PM
The package formerly known as papercheck has changed its name to metacheck! We're checking more than just papers, with functions to assess OSF projects, github repos, and AsPredicted pre-registrations, with more being developed all the time.
scienceverse.github.io/metacheck/
scienceverse.github.io/metacheck/
Reposted by Protzko
arXiv CS clarifies its policy on narrative reviews:
"The goal of the moderators of each category is to make sure the work being submitted is actually science, and that it is of potential interest to the scientific community."
blog.arxiv.org/2025/10/31/a...
"The goal of the moderators of each category is to make sure the work being submitted is actually science, and that it is of potential interest to the scientific community."
blog.arxiv.org/2025/10/31/a...
Attention Authors: Updated Practice for Review Articles and Position Papers in arXiv CS Category – arXiv blog
blog.arxiv.org
November 2, 2025 at 11:42 AM
arXiv CS clarifies its policy on narrative reviews:
"The goal of the moderators of each category is to make sure the work being submitted is actually science, and that it is of potential interest to the scientific community."
blog.arxiv.org/2025/10/31/a...
"The goal of the moderators of each category is to make sure the work being submitted is actually science, and that it is of potential interest to the scientific community."
blog.arxiv.org/2025/10/31/a...
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
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
October 30, 2025 at 2:59 PM
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
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
How can we start to get closer to true generalizability in the human sciences?
A talk I gave at the wonderful BTSCon suggests the first steps!
Excited to start this journey with the @psysciacc.bsky.social
Preprint with more details coming soon
#meta #psych #phdsky
m.youtube.com/watch?v=7mk4...
A talk I gave at the wonderful BTSCon suggests the first steps!
Excited to start this journey with the @psysciacc.bsky.social
Preprint with more details coming soon
#meta #psych #phdsky
m.youtube.com/watch?v=7mk4...
2025 BTSCON: How to Randomly Sample the Globe-a first Step
YouTube video by Big Team Science Conference
m.youtube.com
October 29, 2025 at 12:56 PM
How can we start to get closer to true generalizability in the human sciences?
A talk I gave at the wonderful BTSCon suggests the first steps!
Excited to start this journey with the @psysciacc.bsky.social
Preprint with more details coming soon
#meta #psych #phdsky
m.youtube.com/watch?v=7mk4...
A talk I gave at the wonderful BTSCon suggests the first steps!
Excited to start this journey with the @psysciacc.bsky.social
Preprint with more details coming soon
#meta #psych #phdsky
m.youtube.com/watch?v=7mk4...
Reposted by Protzko
Who’s gonna pay @rpsychologist.com to make a mega tool converting all g*power analysis types to an interpretable web tool like this?
New release of PowerLMM.js! Browser-based power analysis for longitudinal models with dropout.
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
October 28, 2025 at 3:18 PM
Who’s gonna pay @rpsychologist.com to make a mega tool converting all g*power analysis types to an interpretable web tool like this?
Reposted by Protzko
Reposted by Protzko
Reposted by Protzko
Psychological Assessment is seeking its new editor, to start receiving manuscripts in early 2027 to prepare for issues published in 2028:
www.apa.org/pubs/journal...
Deadline for accepting nominations is Monday, January 12, 2026, at editorsearch.apa.org
@apajournals.bsky.social
www.apa.org/pubs/journal...
Deadline for accepting nominations is Monday, January 12, 2026, at editorsearch.apa.org
@apajournals.bsky.social
www.apa.org
October 21, 2025 at 2:00 AM
Psychological Assessment is seeking its new editor, to start receiving manuscripts in early 2027 to prepare for issues published in 2028:
www.apa.org/pubs/journal...
Deadline for accepting nominations is Monday, January 12, 2026, at editorsearch.apa.org
@apajournals.bsky.social
www.apa.org/pubs/journal...
Deadline for accepting nominations is Monday, January 12, 2026, at editorsearch.apa.org
@apajournals.bsky.social
Reposted by Protzko
🌟 We’re hiring! 🌟 Are you interested in memory, cognitive training, & healthy ageing? We’re looking for a Research Assistant to join our lab! www.jobs.ac.uk/job/DOZ814/r...
👉 0.5 FTE (2.5 days/week), 4 months (likely from 01/26)
👉 Annual salary £32,080 to £33,002 (pro-rata)
👉 Based in Sheffield, UK
👉 0.5 FTE (2.5 days/week), 4 months (likely from 01/26)
👉 Annual salary £32,080 to £33,002 (pro-rata)
👉 Based in Sheffield, UK
Research Assistant - Cognitive Ability & Plasticity Lab at University of Sheffield
Searching for an academic job? Explore this Research Assistant - Cognitive Ability & Plasticity Lab opening on jobs.ac.uk! Click to view more details and browse other academic jobs.
www.jobs.ac.uk
October 17, 2025 at 8:08 AM
🌟 We’re hiring! 🌟 Are you interested in memory, cognitive training, & healthy ageing? We’re looking for a Research Assistant to join our lab! www.jobs.ac.uk/job/DOZ814/r...
👉 0.5 FTE (2.5 days/week), 4 months (likely from 01/26)
👉 Annual salary £32,080 to £33,002 (pro-rata)
👉 Based in Sheffield, UK
👉 0.5 FTE (2.5 days/week), 4 months (likely from 01/26)
👉 Annual salary £32,080 to £33,002 (pro-rata)
👉 Based in Sheffield, UK
Reposted by Protzko
Do messages claiming free will doesn’t exist actually shift people's beliefs? Our @jexpsocpsych.bsky.social paper finds believe reductions over a week—but only when the context of reporting beliefs is the same as when reading text. w/ @protzko.bsky.social @sebraem.bsky.social
tinyurl.com/yb3y4ahs
tinyurl.com/yb3y4ahs
Does reading an anti-free will text affect beliefs related to free will over time? — A registered report
Scientists debate how the public would react when anti-free will messages are communicated in the media. Taking part in this debate, social psychologi…
www.sciencedirect.com
October 14, 2025 at 8:02 AM
Do messages claiming free will doesn’t exist actually shift people's beliefs? Our @jexpsocpsych.bsky.social paper finds believe reductions over a week—but only when the context of reporting beliefs is the same as when reading text. w/ @protzko.bsky.social @sebraem.bsky.social
tinyurl.com/yb3y4ahs
tinyurl.com/yb3y4ahs
Reposted by Protzko
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
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
October 15, 2025 at 1:05 PM
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
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
Reposted by Protzko
Trump wants to turn his assault on cities into visual propaganda for suburbanites.
The inflatable animal suits ruin the imagery.
But so would everyone carrying American flags.
The left should reclaim patriotic imagery so the only videos ICE can make are of beating up banner-waving patriots.
The inflatable animal suits ruin the imagery.
But so would everyone carrying American flags.
The left should reclaim patriotic imagery so the only videos ICE can make are of beating up banner-waving patriots.
October 14, 2025 at 2:55 PM
Trump wants to turn his assault on cities into visual propaganda for suburbanites.
The inflatable animal suits ruin the imagery.
But so would everyone carrying American flags.
The left should reclaim patriotic imagery so the only videos ICE can make are of beating up banner-waving patriots.
The inflatable animal suits ruin the imagery.
But so would everyone carrying American flags.
The left should reclaim patriotic imagery so the only videos ICE can make are of beating up banner-waving patriots.
Reposted by Protzko
Results of the replication are in!
Chocolate is more desirable than poop:
Cohen's d_rm = 6.20, 95%CI [5.63, 6.78]
N = 486, two single item 1-7 Likert scales of desirability.
w/
@jamiecummins.bsky.social
Chocolate is more desirable than poop:
Cohen's d_rm = 6.20, 95%CI [5.63, 6.78]
N = 486, two single item 1-7 Likert scales of desirability.
w/
@jamiecummins.bsky.social
Make an effect size prediction!
@jamiecummins.bsky.social and I are replicating Balcetis & Dunning's (2010) "chocolate is more desirable than poop" (Cohen's d = 4.52)
Let us known in the replies what effect size you think we'll find. Details of the study in the thread below.
@jamiecummins.bsky.social and I are replicating Balcetis & Dunning's (2010) "chocolate is more desirable than poop" (Cohen's d = 4.52)
Let us known in the replies what effect size you think we'll find. Details of the study in the thread below.
October 14, 2025 at 6:16 PM
Results of the replication are in!
Chocolate is more desirable than poop:
Cohen's d_rm = 6.20, 95%CI [5.63, 6.78]
N = 486, two single item 1-7 Likert scales of desirability.
w/
@jamiecummins.bsky.social
Chocolate is more desirable than poop:
Cohen's d_rm = 6.20, 95%CI [5.63, 6.78]
N = 486, two single item 1-7 Likert scales of desirability.
w/
@jamiecummins.bsky.social
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
Not in within-Ss experiments or when giving reference points for judgments.
From @vladchituc.bsky.social
www.crockettlab.org/s/1-s20-S001...
#psych
October 14, 2025 at 2:10 PM
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
Not in within-Ss experiments or when giving reference points for judgments.
From @vladchituc.bsky.social
www.crockettlab.org/s/1-s20-S001...
#psych
Reposted by Protzko
🎉👶 Welcome to the last new born in the Open Science effort!
Replication Research is a diamond open access journal dedicated to robust, transparent and reproducible science.
#OpenScience #ScientificPublication #Replication #OpenAccess
Replication Research is a diamond open access journal dedicated to robust, transparent and reproducible science.
#OpenScience #ScientificPublication #Replication #OpenAccess
Replication Research
Replication Research is a diamond open-access and researcher-led journal that publishes reproductions, replications, and conceptual articles on repetitive research
www.uni-muenster.de
October 10, 2025 at 10:57 AM
🎉👶 Welcome to the last new born in the Open Science effort!
Replication Research is a diamond open access journal dedicated to robust, transparent and reproducible science.
#OpenScience #ScientificPublication #Replication #OpenAccess
Replication Research is a diamond open access journal dedicated to robust, transparent and reproducible science.
#OpenScience #ScientificPublication #Replication #OpenAccess