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Personality Science 2025 – The Science of Human Diversity - Replicability-Index
Table of Content Why I Wrote My Own Textbook on Personality Psychology When I first started teaching Introduction to Personality Psychology (PSY230) at the University of Toronto Mississauga in 2001, m...
replicationindex.com
A new textbook:
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
Reposted
A device looks impressive, but we forget they simplify reality. Eye-tracking shows where people look, but not what they think. AI can summarize medical symptoms, but it cannot read uncertainty or context. The danger is not “bad technology” but blind trust in its outputs.
#SciWri
#metasci
#SciWri
#metasci
November 22, 2025 at 11:51 AM
Reposted
come on we already went through the replication crisis
When pregnant woman boarded a subway car, 38% of the time someone offered her a seat. If someone dressed as Batman was also in the car it rose to 68%.
phys.org/news/2025-11...
phys.org/news/2025-11...
The Batman effect: The mere sight of the 'superhero' can make us more altruistic
If "Batman" appears on the scene, we immediately become more altruistic: in fact, research conducted by psychologists from the Università Cattolica del Sacro Cuore, Milan, shows that the sudden appear...
phys.org
November 22, 2025 at 1:13 AM
come on we already went through the replication crisis
Is there any debate about the stupidity of p-values in economics. Why not CI?
This study examines the impact of this change on p-hacking and publication bias. The author employs a diff-in-diff design, as well as the battery of tests proposed by Elliott et al. (2022b). The author finds no statistically significant effect of this policy.
November 21, 2025 at 1:24 AM
Is there any debate about the stupidity of p-values in economics. Why not CI?
What scientists are you. I mean some are better than others.
Interested in the good science that is not corrupted by dark research funding money and 10% funding rates.
Interested in the good science that is not corrupted by dark research funding money and 10% funding rates.
Trust in science will increase when we stop all the money being used to fund anti-science political attacks and spread disinformation.
November 20, 2025 at 4:26 AM
What scientists are you. I mean some are better than others.
Interested in the good science that is not corrupted by dark research funding money and 10% funding rates.
Interested in the good science that is not corrupted by dark research funding money and 10% funding rates.
JPSP: don't let methodological rigor get in the way of a good story. This one was falsified by a blog post that was published years before the article came out.
replicationindex.com/2025/11/18/p...
replicationindex.com/2025/11/18/p...
Personality Development is in the Eye of the Beholder - Replicability-Index
The German Socio-Economic Panel (SOEP) is one of the world’s largest and longest-running household surveys, and its personality data have now been analyzed in dozens of papers. Recently, a 2024 articl...
replicationindex.com
November 19, 2025 at 4:06 AM
JPSP: don't let methodological rigor get in the way of a good story. This one was falsified by a blog post that was published years before the article came out.
replicationindex.com/2025/11/18/p...
replicationindex.com/2025/11/18/p...
This would never happen in psychology because everything is significant even without industry sponsers.
LB: Meta-research is like a pug wearing a pug-suit. We are doing research on research (less cute though!)
We looked at 25 meta-research studies including 2923 studies. Studies with statistically significant efficacy results are 30% higher among industry-sponsored studies than non-industry
#AIMOS2025
We looked at 25 meta-research studies including 2923 studies. Studies with statistically significant efficacy results are 30% higher among industry-sponsored studies than non-industry
#AIMOS2025
November 18, 2025 at 11:53 PM
This would never happen in psychology because everything is significant even without industry sponsers.
How do you teach students about the replication crisis. With examples from blood glucose, estrogen, to nasal spray oxytocin studies.
replicationindex.com/2025/11/18/p...
replicationindex.com/2025/11/18/p...
Personality Science – Chapter 09 - Replicability-Index
Biological Causes of Personality Preface Many textbooks now have a section on replication or even the "replication crisis" somewhere in their Intro or Methods sections in the beginning of the book, bu...
replicationindex.com
November 18, 2025 at 7:43 PM
How do you teach students about the replication crisis. With examples from blood glucose, estrogen, to nasal spray oxytocin studies.
replicationindex.com/2025/11/18/p...
replicationindex.com/2025/11/18/p...
I did it. I finally found a "left-skewed" p-curve in the wild.
Why didn't I think of trying "Consumer psychology" before.
Why didn't I think of trying "Consumer psychology" before.
November 14, 2025 at 1:16 PM
I did it. I finally found a "left-skewed" p-curve in the wild.
Why didn't I think of trying "Consumer psychology" before.
Why didn't I think of trying "Consumer psychology" before.
A new textbook:
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
Personality Science 2025 – The Science of Human Diversity - Replicability-Index
Table of Content Why I Wrote My Own Textbook on Personality Psychology When I first started teaching Introduction to Personality Psychology (PSY230) at the University of Toronto Mississauga in 2001, m...
replicationindex.com
November 13, 2025 at 2:09 PM
A new textbook:
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
- German style in English
- no p-hacked, bullshit stories
- quantifying claims
- taking measurement seriously
- unapologetically making supported causal claims
- open to feedback and corrections
replicationindex.com/2020/08/19/p...
Do not repeat this insight. Don't we all love sharing other people's secrets. Larry Summers is a jerk.
Why hello there former US Treasury Secretary, president of Harvard, and director of the National Economic Council Larry Summers.
Sharing with alt so we can all bask in his hidden insights that we are NOT allowed to share.
And here's the source link:
oversightdemocrats.house.gov/sites/evo-su...
Sharing with alt so we can all bask in his hidden insights that we are NOT allowed to share.
And here's the source link:
oversightdemocrats.house.gov/sites/evo-su...
November 13, 2025 at 1:57 PM
Do not repeat this insight. Don't we all love sharing other people's secrets. Larry Summers is a jerk.
Meta-Science is dead.
Long live Uber-Science; the Uber-Ich (Super-Ego) of Science.
Without Uber-Science, Science is driven entirely by the dark forces of the Science-ID with its endless need for publications, citations, and grant money.
Long live Uber-Science; the Uber-Ich (Super-Ego) of Science.
Without Uber-Science, Science is driven entirely by the dark forces of the Science-ID with its endless need for publications, citations, and grant money.
November 13, 2025 at 1:50 PM
Meta-Science is dead.
Long live Uber-Science; the Uber-Ich (Super-Ego) of Science.
Without Uber-Science, Science is driven entirely by the dark forces of the Science-ID with its endless need for publications, citations, and grant money.
Long live Uber-Science; the Uber-Ich (Super-Ego) of Science.
Without Uber-Science, Science is driven entirely by the dark forces of the Science-ID with its endless need for publications, citations, and grant money.
If funders were serious, they could just ask researchers who received funding to publish their grant proposals. Isn't that step one of a registered report - including bogus power analyses to justify budget friendly proposals?
If funders wanted to make a huge positive impact on scientific practice, they would mandate that all publications appear first as registered reports, that APCs are only paid for RRs, and that grant applications only require preliminary data for RR sample size determination / power analysis.
November 13, 2025 at 1:44 PM
If funders were serious, they could just ask researchers who received funding to publish their grant proposals. Isn't that step one of a registered report - including bogus power analyses to justify budget friendly proposals?
Reposted
81 years ago, FDR proposed a second Bill of Rights to guarantee every American the right to employment, healthcare, education, housing, and a living income. His words are as relevant now as they were then. Watch.
November 12, 2025 at 2:31 AM
81 years ago, FDR proposed a second Bill of Rights to guarantee every American the right to employment, healthcare, education, housing, and a living income. His words are as relevant now as they were then. Watch.
Reposted
Jeffries: We are not going to be lectured by anyone on the other side of the aisle about fiscal responsibility when the bill that you just passed is the most fiscally irresponsible piece of legislation ever…
November 12, 2025 at 2:51 AM
Jeffries: We are not going to be lectured by anyone on the other side of the aisle about fiscal responsibility when the bill that you just passed is the most fiscally irresponsible piece of legislation ever…
How much of Psychology is really Psydology?
November 12, 2025 at 1:22 AM
How much of Psychology is really Psydology?
Reposted
1/ The US Government has quietly removed a memorial to Black soldiers who died in World War II from the Netherlands American Cemetery in Margraten, South Limburg. The move follows a complaint from the right-wing Heritage Foundation to the American Battle Monuments Commission. ⬇️
November 9, 2025 at 9:23 AM
1/ The US Government has quietly removed a memorial to Black soldiers who died in World War II from the Netherlands American Cemetery in Margraten, South Limburg. The move follows a complaint from the right-wing Heritage Foundation to the American Battle Monuments Commission. ⬇️
They are not the same.
A recent paper suggests we stop using the terms Registered Report and preregistration. This is a very bad idea by my fellow metascientists. There is no way I am ever gonna drop 'Registered Reports' for 'Two-stage review with in principle acceptance'
journals.sagepub.com/doi/10.1177/...
journals.sagepub.com/doi/10.1177/...
November 10, 2025 at 8:25 PM
They are not the same.
How about distinguishing positive and negative impact.
IAT - huge citation impact, huge negative impact.
😀
IAT - huge citation impact, huge negative impact.
😀
Hu & Bentler (1999) with >130k citations selected for huge citation and moderate actual impact--see Nils' rationale that a lot of citation use is unthinking or to stop thinking.
What then is the prototype of prototypes for the moderate citation impact and moderate actual impact?
What then is the prototype of prototypes for the moderate citation impact and moderate actual impact?
November 10, 2025 at 8:24 PM
How about distinguishing positive and negative impact.
IAT - huge citation impact, huge negative impact.
😀
IAT - huge citation impact, huge negative impact.
😀
Reposted
Panorama made a stupid editing mistake. But compare this to the deliberate and systemic attempt, sustained across years, to ensure that BBC output aligns ever more closely to the demands of economic power. Against your straw of bias, I raise you a haystack.
November 10, 2025 at 6:00 AM
Panorama made a stupid editing mistake. But compare this to the deliberate and systemic attempt, sustained across years, to ensure that BBC output aligns ever more closely to the demands of economic power. Against your straw of bias, I raise you a haystack.
Reposted
Governor Gavin Newsom on Twitter a few moments ago
Regarding Democrat Senators who caved
Agree with you Governor 💯
Regarding Democrat Senators who caved
Agree with you Governor 💯
November 10, 2025 at 2:53 AM
Governor Gavin Newsom on Twitter a few moments ago
Regarding Democrat Senators who caved
Agree with you Governor 💯
Regarding Democrat Senators who caved
Agree with you Governor 💯
Reposted
Republicans were overwhelmingly getting blamed for the shutdown.
There was no reason for the Democrats to cave to Trump on healthcare, except for the fact that they are wholly owned and operated by the health insurance lobby.
There was no reason for the Democrats to cave to Trump on healthcare, except for the fact that they are wholly owned and operated by the health insurance lobby.
November 10, 2025 at 3:31 AM
Republicans were overwhelmingly getting blamed for the shutdown.
There was no reason for the Democrats to cave to Trump on healthcare, except for the fact that they are wholly owned and operated by the health insurance lobby.
There was no reason for the Democrats to cave to Trump on healthcare, except for the fact that they are wholly owned and operated by the health insurance lobby.
Reposted
Amazon charge up to 40% rent to use their services.
80% of all profits are directly removed from the UK and into tax havens. Depletion of money in the UK economy.
Sell a great invention—they will copy it and sell it for themselves.
They steal & sell PRIVATE data.
This is a PREDATORY COMPANY
80% of all profits are directly removed from the UK and into tax havens. Depletion of money in the UK economy.
Sell a great invention—they will copy it and sell it for themselves.
They steal & sell PRIVATE data.
This is a PREDATORY COMPANY
November 10, 2025 at 5:57 AM
Amazon charge up to 40% rent to use their services.
80% of all profits are directly removed from the UK and into tax havens. Depletion of money in the UK economy.
Sell a great invention—they will copy it and sell it for themselves.
They steal & sell PRIVATE data.
This is a PREDATORY COMPANY
80% of all profits are directly removed from the UK and into tax havens. Depletion of money in the UK economy.
Sell a great invention—they will copy it and sell it for themselves.
They steal & sell PRIVATE data.
This is a PREDATORY COMPANY
So, none of these falsely suggest that the p-curve null-hypothesis (all significant results are false positives) is falsely rejected more than 5% of the time with alpha = .05?
This post came about as a follow-up to a comment @rmcelreath.bsky.social made on the sidelines of the great p-curve wars earlier this year. I wanted to see for myself just how non-uniform these things are and when.
I had a play in #rstats with the distribution of p-values under a true null hypothesis, for two-sample tests of equal proportions at different sample sizes. They're not uniformly distributed, but sometimes they are more non-uniform than other times. freerangestats.info/blog/2025/11...
November 9, 2025 at 9:02 PM
So, none of these falsely suggest that the p-curve null-hypothesis (all significant results are false positives) is falsely rejected more than 5% of the time with alpha = .05?
Reposted
A lot is going on at @forrt.bsky.social! #OER, #metascience, #socialjustice, and much more. If you want to get a glimpse of some of the projects, check out this beautiful booklet at forrt.org/booklet created by @irissmal.bsky.social
November 9, 2025 at 10:17 AM
A lot is going on at @forrt.bsky.social! #OER, #metascience, #socialjustice, and much more. If you want to get a glimpse of some of the projects, check out this beautiful booklet at forrt.org/booklet created by @irissmal.bsky.social
One of the jobs of #MetaScience is or should be to distinguish real science from pseudo-science; and the job of meta-scientists is to call out pseudo-science when they see it. Academic != scientist.
replicationindex.com/2025/11/06/t...
replicationindex.com/2025/11/06/t...
The Ideology versus the Science of Evolved Sex Differences - Replicability-Index
1. Introduction: Competing Stories About Gender Debates about sex differences often swing between extremes. One narrative, familiar from strands of radical feminism, portrays masculinity as dangerous—...
replicationindex.com
November 7, 2025 at 7:26 PM
One of the jobs of #MetaScience is or should be to distinguish real science from pseudo-science; and the job of meta-scientists is to call out pseudo-science when they see it. Academic != scientist.
replicationindex.com/2025/11/06/t...
replicationindex.com/2025/11/06/t...