Peder M Isager
@isager.bsky.social
Associate professor at Oslo New University College. Dungeon Master. Website: http://pedermisager.netlify.app
My paper with @lakens.bsky.social and @annaveer.bsky.social - “Replication value as a function of citation impact and sample size” - has just been published in Meta psychology! open.lnu.se/index.php/me...
October 30, 2025 at 9:11 AM
My paper with @lakens.bsky.social and @annaveer.bsky.social - “Replication value as a function of citation impact and sample size” - has just been published in Meta psychology! open.lnu.se/index.php/me...
Reposted by Peder M Isager
I built a DAG diagram with garden hoses for teaching.
Pictured: a collider bias diagram, inspired by a blocked pipe situation I experienced (which I credit with giving me the intuition though it also ruined my belongings in the flooded cellar).
Pictured: a collider bias diagram, inspired by a blocked pipe situation I experienced (which I credit with giving me the intuition though it also ruined my belongings in the flooded cellar).
October 28, 2025 at 5:50 PM
I built a DAG diagram with garden hoses for teaching.
Pictured: a collider bias diagram, inspired by a blocked pipe situation I experienced (which I credit with giving me the intuition though it also ruined my belongings in the flooded cellar).
Pictured: a collider bias diagram, inspired by a blocked pipe situation I experienced (which I credit with giving me the intuition though it also ruined my belongings in the flooded cellar).
Extremely honored to recieve Oslo New University College's science award for 2025. ONH has been a fantastic base to conduct my research at for the past 4 years, and I have an amazing team of colleagues around me to thank for that. From the bottom of my heart, thank you all!
September 26, 2025 at 1:50 PM
Extremely honored to recieve Oslo New University College's science award for 2025. ONH has been a fantastic base to conduct my research at for the past 4 years, and I have an amazing team of colleagues around me to thank for that. From the bottom of my heart, thank you all!
Reposted by Peder M Isager
Okay everyone, things are getting serious. I’m going to teach research methods again, 1st year psychology undergraduates. What would you cover with respects to philosophy of science, the research process etc.? I’m not very happy with the textbook stuff so I’m open to all ideas!
August 19, 2025 at 9:05 AM
Okay everyone, things are getting serious. I’m going to teach research methods again, 1st year psychology undergraduates. What would you cover with respects to philosophy of science, the research process etc.? I’m not very happy with the textbook stuff so I’m open to all ideas!
Reposted by Peder M Isager
An abbreviation (ABB) in a journal article (JA) or Grant Application (GA) is rarely worth the words it saves. Every ABB requires cognitive resources (CR) and at my age by the time I'm halfway through a JA or GA I no longer have the CR to remember what your ABB stood for.
August 15, 2025 at 9:39 AM
An abbreviation (ABB) in a journal article (JA) or Grant Application (GA) is rarely worth the words it saves. Every ABB requires cognitive resources (CR) and at my age by the time I'm halfway through a JA or GA I no longer have the CR to remember what your ABB stood for.
Can we infer causal relations from undirected network models of mental disorders? Some authors apparently say no. Personally, I don't see what network models are good for if they can't help us understand disease etiology (i.e. causality).
Quote from onlinelibrary.wiley.com/doi/10.1002/...
Quote from onlinelibrary.wiley.com/doi/10.1002/...
August 14, 2025 at 1:31 PM
Can we infer causal relations from undirected network models of mental disorders? Some authors apparently say no. Personally, I don't see what network models are good for if they can't help us understand disease etiology (i.e. causality).
Quote from onlinelibrary.wiley.com/doi/10.1002/...
Quote from onlinelibrary.wiley.com/doi/10.1002/...
New blog post! Why experiments are the gold standard for answering causal questions (pedermisager.org/blog/why-exp...). Many text books insist on experimental evidence to draw causal inferences bvut don't fully explain exactly what gives experiments their special powers.
August 8, 2025 at 10:33 AM
New blog post! Why experiments are the gold standard for answering causal questions (pedermisager.org/blog/why-exp...). Many text books insist on experimental evidence to draw causal inferences bvut don't fully explain exactly what gives experiments their special powers.
RE @nulliusinverba.bsky.social ep 59: Meehl seems to assume that research is harder than teaching; teachers should be paid less and if you can't do interesting research you're "demoted" to teaching. Why not the opposite? Why not pay teachers more and say "if you cannot teach, do"?
July 1, 2025 at 1:33 PM
RE @nulliusinverba.bsky.social ep 59: Meehl seems to assume that research is harder than teaching; teachers should be paid less and if you can't do interesting research you're "demoted" to teaching. Why not the opposite? Why not pay teachers more and say "if you cannot teach, do"?
Currently reading "Complex Systems Research in Psychology" (santafeinstitute.github.io/ComplexPsych/). If you're interested systems psychology/psychopathology, give this a read. van der Maas gives a very broad introduction to the topic, and supplements text with R code and practical exercises.
Complex Systems Research in Psychology
santafeinstitute.github.io
July 1, 2025 at 11:27 AM
Currently reading "Complex Systems Research in Psychology" (santafeinstitute.github.io/ComplexPsych/). If you're interested systems psychology/psychopathology, give this a read. van der Maas gives a very broad introduction to the topic, and supplements text with R code and practical exercises.
Reposted by Peder M Isager
I often talk about the need for psychology to improve. That is because I think it is worth improving. It would be very helpful if I could easily provide a few dozen examples of the contributions that have been made to support that conviction. I know they exist. I would just like them in one place.
June 26, 2025 at 6:37 AM
I often talk about the need for psychology to improve. That is because I think it is worth improving. It would be very helpful if I could easily provide a few dozen examples of the contributions that have been made to support that conviction. I know they exist. I would just like them in one place.
Just discovered "Mental health professionals’ attitudes towards the network theory of mental disorders" by @leahschumaker.bsky.social & Levente Kriston (osf.io/462cs). Fascinating read. Partly confirms suspicion I've had for a while that therapists see NTMD as "nothing new" (but see pub for details)
OSF
doi.org
June 26, 2025 at 8:03 AM
Just discovered "Mental health professionals’ attitudes towards the network theory of mental disorders" by @leahschumaker.bsky.social & Levente Kriston (osf.io/462cs). Fascinating read. Partly confirms suspicion I've had for a while that therapists see NTMD as "nothing new" (but see pub for details)
Reposted by Peder M Isager
My editorial on how journals can earn trust.
We often use journal names as proxies for quality. This is bad bc it’s not valid. But it could be. Editors could make journal name a valid signal. And we could place value on journals that show us how they do that.
journals.sagepub.com/doi/full/10....
We often use journal names as proxies for quality. This is bad bc it’s not valid. But it could be. Editors could make journal name a valid signal. And we could place value on journals that show us how they do that.
journals.sagepub.com/doi/full/10....
May 8, 2025 at 9:25 AM
My editorial on how journals can earn trust.
We often use journal names as proxies for quality. This is bad bc it’s not valid. But it could be. Editors could make journal name a valid signal. And we could place value on journals that show us how they do that.
journals.sagepub.com/doi/full/10....
We often use journal names as proxies for quality. This is bad bc it’s not valid. But it could be. Editors could make journal name a valid signal. And we could place value on journals that show us how they do that.
journals.sagepub.com/doi/full/10....
Reposted by Peder M Isager
There is still time to sign up for the last workshop of this academic year at PMGS, "Scientific Criticism and Peer Review," by @renebekkers.mastodon.social.ap.brid.gy
Check out the details here:
paulmeehlschool.github.io/workshops/cr...
Check out the details here:
paulmeehlschool.github.io/workshops/cr...
Scientific Criticism and Peer Review | Paul meehl Graduate School
June 6, 2025
paulmeehlschool.github.io
May 8, 2025 at 7:19 AM
There is still time to sign up for the last workshop of this academic year at PMGS, "Scientific Criticism and Peer Review," by @renebekkers.mastodon.social.ap.brid.gy
Check out the details here:
paulmeehlschool.github.io/workshops/cr...
Check out the details here:
paulmeehlschool.github.io/workshops/cr...
Reposted by Peder M Isager
Psych-DS is (1) spellcheck for your datasets and (2) a pathway to standardizing data in our academic fields that *everyone* can learn.
And it's live RIGHT NOW!
psych-ds.github.io
(This is the announcement post I've been leading up to)
And it's live RIGHT NOW!
psych-ds.github.io
(This is the announcement post I've been leading up to)
Psych-DS
A specification for psychological datasets. JSON metadata, predictable directory structure, and machine-readable specifications for tabular datasets.
psych-ds.github.io
April 9, 2025 at 7:37 PM
Psych-DS is (1) spellcheck for your datasets and (2) a pathway to standardizing data in our academic fields that *everyone* can learn.
And it's live RIGHT NOW!
psych-ds.github.io
(This is the announcement post I've been leading up to)
And it's live RIGHT NOW!
psych-ds.github.io
(This is the announcement post I've been leading up to)
I'll finally get to teach a workshop on one of my favourite subjects - causal inference - at the Paul Meehl graduate school may 9th! Ever wondered what the point is of controlling for variables in your regression analysis? Come find out with us!
A new free workshop of the Paul Meehl Graduate School is open for registration! On May 9 @isager.bsky.social will teach on Causal Inference and Variable Control. Check out the announcement below, and see you all @tue.nl!
paulmeehlschool.github.io/2025-04-02-c...
paulmeehlschool.github.io/2025-04-02-c...
New workshop announced: Causal Inference and Variable Control | Paul meehl Graduate School
We are excited to announce that registration is now open for the workshop “Causal Inference and Variable Control”. In this...
paulmeehlschool.github.io
April 3, 2025 at 4:35 PM
I'll finally get to teach a workshop on one of my favourite subjects - causal inference - at the Paul Meehl graduate school may 9th! Ever wondered what the point is of controlling for variables in your regression analysis? Come find out with us!
Reposted by Peder M Isager
The new workshop of Paul Meehl Graduate School, Causal Inference and Variable Control by @isager.bsky.social, is open for registration. Check out the announcement below:
paulmeehlschool.github.io/2025-04-02-c...
paulmeehlschool.github.io/2025-04-02-c...
New workshop announced: Causal Inference and Variable Control | Paul meehl Graduate School
We are excited to announce that registration is now open for the workshop “Causal Inference and Variable Control”. In this...
paulmeehlschool.github.io
April 2, 2025 at 2:26 PM
The new workshop of Paul Meehl Graduate School, Causal Inference and Variable Control by @isager.bsky.social, is open for registration. Check out the announcement below:
paulmeehlschool.github.io/2025-04-02-c...
paulmeehlschool.github.io/2025-04-02-c...
Reposted by Peder M Isager
Looking for a PhD/Postdoc in Switzerland? English speaking lab, good pay, incredible scenery.
There's lots of funding calls for projects related to my work on the meta-science of measurement, error detection and trustworthiness assessment. Reach out if you're interested in writing a grant together.
There's lots of funding calls for projects related to my work on the meta-science of measurement, error detection and trustworthiness assessment. Reach out if you're interested in writing a grant together.
March 6, 2025 at 8:31 AM
Looking for a PhD/Postdoc in Switzerland? English speaking lab, good pay, incredible scenery.
There's lots of funding calls for projects related to my work on the meta-science of measurement, error detection and trustworthiness assessment. Reach out if you're interested in writing a grant together.
There's lots of funding calls for projects related to my work on the meta-science of measurement, error detection and trustworthiness assessment. Reach out if you're interested in writing a grant together.
From www.chronicle.com/article/soci... by Gelman and King. I applaud the idea presented in this piece, but this specific argument is flawed🧵
March 6, 2025 at 8:14 AM
From www.chronicle.com/article/soci... by Gelman and King. I applaud the idea presented in this piece, but this specific argument is flawed🧵
Reposted by Peder M Isager
My commentary on Isager, van ‘t Veer, and Lakens’ (2024) “Replication value as a function of citation impact and sample size” is now accepted at Meta-Psychology.
CC: @isager.bsky.social @lakens.bsky.social @annaveer.bsky.social
Preprint: osf.io/preprints/me...
CC: @isager.bsky.social @lakens.bsky.social @annaveer.bsky.social
Preprint: osf.io/preprints/me...
OSF
osf.io
February 26, 2025 at 7:49 PM
My commentary on Isager, van ‘t Veer, and Lakens’ (2024) “Replication value as a function of citation impact and sample size” is now accepted at Meta-Psychology.
CC: @isager.bsky.social @lakens.bsky.social @annaveer.bsky.social
Preprint: osf.io/preprints/me...
CC: @isager.bsky.social @lakens.bsky.social @annaveer.bsky.social
Preprint: osf.io/preprints/me...
Reposted by Peder M Isager
The inset appears to move.
February 25, 2025 at 7:13 AM
The inset appears to move.
Inspiring work by @sajedehra.bsky.social et al. on identifying the various benefits of coordination in science, and providing a better language to talk about what coordination in science actually *is*.
I personally long to one day be part of a truly coordinated research line.
I personally long to one day be part of a truly coordinated research line.
knowledge generation system and highlight seven ways in which scientific coordination provides epistemic benefits. I would love to hear your thoughts. You can find them here: doi.org/10.31234/osf...
doi.org/10.31234/osf...
doi.org/10.31234/osf...
OSF
doi.org
February 13, 2025 at 1:36 PM
Inspiring work by @sajedehra.bsky.social et al. on identifying the various benefits of coordination in science, and providing a better language to talk about what coordination in science actually *is*.
I personally long to one day be part of a truly coordinated research line.
I personally long to one day be part of a truly coordinated research line.
Reposted by Peder M Isager
Mark your calenders.
The dates and topics of the upcoming workshops of the Paul Meehl Graduate School are announced.
Stay tuned for more information
paulmeehlschool.github.io/2025-02-10-s...
The dates and topics of the upcoming workshops of the Paul Meehl Graduate School are announced.
Stay tuned for more information
paulmeehlschool.github.io/2025-02-10-s...
Upcoming Workshops: Finalized Dates & Topics | Paul meehl Graduate School
We’re excited to share the dates for our upcoming workshops for the remainder of this academic year. Mark your calendars...
paulmeehlschool.github.io
February 12, 2025 at 8:28 AM
Mark your calenders.
The dates and topics of the upcoming workshops of the Paul Meehl Graduate School are announced.
Stay tuned for more information
paulmeehlschool.github.io/2025-02-10-s...
The dates and topics of the upcoming workshops of the Paul Meehl Graduate School are announced.
Stay tuned for more information
paulmeehlschool.github.io/2025-02-10-s...
Reposted by Peder M Isager
My team is looking for someone to lead our operations and communications in a senior-level role! More details: www.jobs.cam.ac.uk/job/50079/
Centre Manager (Communications and Operations) - Job Opportunities - University of Cambridge
Centre Manager (Communications and Operations) in the MRC Cognition and Brain Sciences Unit at the University of Cambridge.
www.jobs.cam.ac.uk
January 28, 2025 at 8:09 AM
My team is looking for someone to lead our operations and communications in a senior-level role! More details: www.jobs.cam.ac.uk/job/50079/
Reposted by Peder M Isager
Go, shorty: New blog post! (How) should you interpret pre-post differences in a randomized study?
In which we introduce a new format, "reviewer notes" -- points that occasionally need to be made during the peer-review process.
www.the100.ci/2025/01/22/r...
In which we introduce a new format, "reviewer notes" -- points that occasionally need to be made during the peer-review process.
www.the100.ci/2025/01/22/r...
Reviewer notes: In a randomized experiment, the pre-post differences are not effect estimates
Reviewer notes are a new short format with brief explanations of basic ideas that might come in handy during (for example) the peer-review process. They are a great way to keep Julia from writing 10,0...
www.the100.ci
January 22, 2025 at 2:39 PM
Go, shorty: New blog post! (How) should you interpret pre-post differences in a randomized study?
In which we introduce a new format, "reviewer notes" -- points that occasionally need to be made during the peer-review process.
www.the100.ci/2025/01/22/r...
In which we introduce a new format, "reviewer notes" -- points that occasionally need to be made during the peer-review process.
www.the100.ci/2025/01/22/r...
Reposted by Peder M Isager
New paper for holiday reading! @isager.bsky.social and I provide an introduction to three-sided testing, a framework for testing estimates' practical significance. We offer a tutorial, Shiny app, + commands/code in #Rstats, #Jamovi, + #Stata. 1/9
osf.io/preprints/psyarxiv/8y925
#EconSky #PsychSky
osf.io/preprints/psyarxiv/8y925
#EconSky #PsychSky
December 20, 2024 at 3:50 PM
New paper for holiday reading! @isager.bsky.social and I provide an introduction to three-sided testing, a framework for testing estimates' practical significance. We offer a tutorial, Shiny app, + commands/code in #Rstats, #Jamovi, + #Stata. 1/9
osf.io/preprints/psyarxiv/8y925
#EconSky #PsychSky
osf.io/preprints/psyarxiv/8y925
#EconSky #PsychSky