Constantin Yves Plessen
@cyplessen.bsky.social
Psychologist & psychometrician investigating the robustness of mental health research. Exploring researcher degrees of freedom in meta-analyses & psychometrics at University of Graz.
Pinned
Constantin Yves Plessen
constantinyvesplessen.com
Starting my job search: I just finished my PhD in Clinical Psychology and am looking for opportunities to make an impact.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
Reposted by Constantin Yves Plessen
What are some articles, blogposts, essays, etc. that you still think about over a year later?
Here are a few of mine:
Here are a few of mine:
April 19, 2025 at 11:44 AM
What are some articles, blogposts, essays, etc. that you still think about over a year later?
Here are a few of mine:
Here are a few of mine:
Reposted by Constantin Yves Plessen
Yes, I am one of those horrible people who submit during the season. New preprint, 1st paper from my #ERCStG DECOMPOSE
www.medrxiv.org/content/10.1...
The goals of DECOMPOSE are break-down psychological interventions into components, integrate these in a taxonomy and evaluate incremental efficacy
www.medrxiv.org/content/10.1...
The goals of DECOMPOSE are break-down psychological interventions into components, integrate these in a taxonomy and evaluate incremental efficacy
Accessibility and public availability of treatment protocols and manuals for evidence-based psychological interventions for severe mental disorders: A survey of randomized trials
Background: Psychological interventions are developed and tested as packages of multiple components. Identifying active ingredients requires access to detailed intervention descriptions, such as from ...
www.medrxiv.org
December 30, 2024 at 8:29 AM
Yes, I am one of those horrible people who submit during the season. New preprint, 1st paper from my #ERCStG DECOMPOSE
www.medrxiv.org/content/10.1...
The goals of DECOMPOSE are break-down psychological interventions into components, integrate these in a taxonomy and evaluate incremental efficacy
www.medrxiv.org/content/10.1...
The goals of DECOMPOSE are break-down psychological interventions into components, integrate these in a taxonomy and evaluate incremental efficacy
Reposted by Constantin Yves Plessen
I am seeing this paper cited everywhere, @sciencenews.bsky.social @naturenews.bsky.social conferences, soon policy papers
osf.io/5rf2m/
First, what is the method of this paper? Systematic review? Scoping review? Overview of reviews? Narrative review? Or none was adequate?
osf.io/5rf2m/
First, what is the method of this paper? Systematic review? Scoping review? Overview of reviews? Narrative review? Or none was adequate?
HOW MUCH SCIENCE IS FAKE?
Hosted on the Open Science Framework
osf.io
December 28, 2024 at 10:37 AM
I am seeing this paper cited everywhere, @sciencenews.bsky.social @naturenews.bsky.social conferences, soon policy papers
osf.io/5rf2m/
First, what is the method of this paper? Systematic review? Scoping review? Overview of reviews? Narrative review? Or none was adequate?
osf.io/5rf2m/
First, what is the method of this paper? Systematic review? Scoping review? Overview of reviews? Narrative review? Or none was adequate?
Reposted by Constantin Yves Plessen
JBI, Cochrane and Campbell Collaboration are partnering to co-facilitate an initiative, Building a Global Evidence Synthesis Community. We are calling for expressions of interest to join us as we seize a once-in-a-generation opportunity for a global step change in #EvidenceSynthesis synthesis. 🧵1/
December 12, 2024 at 8:42 AM
JBI, Cochrane and Campbell Collaboration are partnering to co-facilitate an initiative, Building a Global Evidence Synthesis Community. We are calling for expressions of interest to join us as we seize a once-in-a-generation opportunity for a global step change in #EvidenceSynthesis synthesis. 🧵1/
Reposted by Constantin Yves Plessen
Stigmatising and inaccurate portrayals of mental disorders:
Researchers asked generative AI models to depict different disorders.
Images reflected historical biases & pop-culture references rather than evidence-based clinical representation of these conditions
mentalhealth.bmj.com/content/27/1...
Researchers asked generative AI models to depict different disorders.
Images reflected historical biases & pop-culture references rather than evidence-based clinical representation of these conditions
mentalhealth.bmj.com/content/27/1...
December 5, 2024 at 11:10 AM
Stigmatising and inaccurate portrayals of mental disorders:
Researchers asked generative AI models to depict different disorders.
Images reflected historical biases & pop-culture references rather than evidence-based clinical representation of these conditions
mentalhealth.bmj.com/content/27/1...
Researchers asked generative AI models to depict different disorders.
Images reflected historical biases & pop-culture references rather than evidence-based clinical representation of these conditions
mentalhealth.bmj.com/content/27/1...
Starting my job search: I just finished my PhD in Clinical Psychology and am looking for opportunities to make an impact.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
Constantin Yves Plessen
constantinyvesplessen.com
December 3, 2024 at 9:55 AM
Starting my job search: I just finished my PhD in Clinical Psychology and am looking for opportunities to make an impact.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
I have expertise in meta-analyses, advanced stats, psychometrics, R, and project management.
If you know of a position that might be a great fit, please feel free to reach out.
Reposted by Constantin Yves Plessen
Do a DAG Before You Do a Specification Curve Analysis #CausalSky #Stats
replicationnetwork.com/2024/11/18/r... With an example of reducing >1,200 specifications to 6. Computational power should not replace theoretical thinking and model building. 1/
replicationnetwork.com/2024/11/18/r... With an example of reducing >1,200 specifications to 6. Computational power should not replace theoretical thinking and model building. 1/
REED: Do a DAG Before You Do a Specification Curve Analysis
My previous two blogs focused on how to do a specification curve analysis (SCA) using the R package “specr” (here) and the Stata program “speccurve” (here). Both blogs provided line-by-line explana…
replicationnetwork.com
November 25, 2024 at 3:27 PM
Do a DAG Before You Do a Specification Curve Analysis #CausalSky #Stats
replicationnetwork.com/2024/11/18/r... With an example of reducing >1,200 specifications to 6. Computational power should not replace theoretical thinking and model building. 1/
replicationnetwork.com/2024/11/18/r... With an example of reducing >1,200 specifications to 6. Computational power should not replace theoretical thinking and model building. 1/
TIL blue zones of longevity are not real:
“Newman’s main argument is that a significant proportion of supposed centenarians may simply not exist. His research shows that around 1900, when the U.S. started to issue birth certificates, the number of centenarians aged 110 or older dropped sharply…”
“Newman’s main argument is that a significant proportion of supposed centenarians may simply not exist. His research shows that around 1900, when the U.S. started to issue birth certificates, the number of centenarians aged 110 or older dropped sharply…”
There's really no such things as "blue zones" for longevity
www.science.org/content/arti... open-access
www.science.org/content/arti... open-access
Do ‘blue zones,’ supposed havens of longevity, rest on shaky science?
Critics say extraordinary life spans reflect faulty record keeping, not healthy lifestyles
www.science.org
November 24, 2024 at 9:03 PM
TIL blue zones of longevity are not real:
“Newman’s main argument is that a significant proportion of supposed centenarians may simply not exist. His research shows that around 1900, when the U.S. started to issue birth certificates, the number of centenarians aged 110 or older dropped sharply…”
“Newman’s main argument is that a significant proportion of supposed centenarians may simply not exist. His research shows that around 1900, when the U.S. started to issue birth certificates, the number of centenarians aged 110 or older dropped sharply…”
Reposted by Constantin Yves Plessen
Just wanted to let everyone know that the one and only Pim Cuijpers and Toshi Furukawa are now on Bluesky as well! :)
@pimcuijpers.bsky.social
@toshi-frkw.bsky.social
#PsychSciSky #psychiatry #statssky #psychsky
@pimcuijpers.bsky.social
@toshi-frkw.bsky.social
#PsychSciSky #psychiatry #statssky #psychsky
November 22, 2024 at 1:23 PM
Just wanted to let everyone know that the one and only Pim Cuijpers and Toshi Furukawa are now on Bluesky as well! :)
@pimcuijpers.bsky.social
@toshi-frkw.bsky.social
#PsychSciSky #psychiatry #statssky #psychsky
@pimcuijpers.bsky.social
@toshi-frkw.bsky.social
#PsychSciSky #psychiatry #statssky #psychsky
Reposted by Constantin Yves Plessen
Updated -largely no exhaustive- list : go.bsky.app/R8RNJgc
Please reply to be added.
Please reply to be added.
November 22, 2024 at 7:25 AM
Updated -largely no exhaustive- list : go.bsky.app/R8RNJgc
Please reply to be added.
Please reply to be added.
Reposted by Constantin Yves Plessen
A largely non exhaustive pack for meta research and open science. Please circulate it ;)
go.bsky.app/R8RNJgc
go.bsky.app/R8RNJgc
November 21, 2024 at 9:26 PM
A largely non exhaustive pack for meta research and open science. Please circulate it ;)
go.bsky.app/R8RNJgc
go.bsky.app/R8RNJgc
Spoiler: Incredibly sad and weirdly funny:
“The optimistic point is, in the long arc of things, we’ll self-correct, even if we have no incentive to retract or take responsibility.”
“Do you believe that?” I asked.
“On my optimistic days, I believe it.”
“Is today an optimistic day?”
“Not really.”
“The optimistic point is, in the long arc of things, we’ll self-correct, even if we have no incentive to retract or take responsibility.”
“Do you believe that?” I asked.
“On my optimistic days, I believe it.”
“Is today an optimistic day?”
“Not really.”
In 2023, Harvard Business School suspended a star professor over charges of research misconduct.
As it happens, one of her papers also had funny data from a *different* B-school superstar -- a "mad, fraudulent unicorn,” per @jamesheathers.bsky.social... (1/3)
www.theatlantic.com/magazine/arc...
As it happens, one of her papers also had funny data from a *different* B-school superstar -- a "mad, fraudulent unicorn,” per @jamesheathers.bsky.social... (1/3)
www.theatlantic.com/magazine/arc...
The Fraudulent Science of Success
Business schools are in the grips of a scandal that threatens to undermine their most influential research—and the credibility of an entire field.
www.theatlantic.com
November 20, 2024 at 9:21 AM
Spoiler: Incredibly sad and weirdly funny:
“The optimistic point is, in the long arc of things, we’ll self-correct, even if we have no incentive to retract or take responsibility.”
“Do you believe that?” I asked.
“On my optimistic days, I believe it.”
“Is today an optimistic day?”
“Not really.”
“The optimistic point is, in the long arc of things, we’ll self-correct, even if we have no incentive to retract or take responsibility.”
“Do you believe that?” I asked.
“On my optimistic days, I believe it.”
“Is today an optimistic day?”
“Not really.”
Are digital interventions for depression effective?
We ran 3,638 meta-analyses on 125 RCTs (32,733 participants) to find out.
Effect sizes ranged from small to medium (Hedges’ g = 0.16–0.74), with guided interventions & LMICs showing greater benefits.
www.sciencedirect.com/science/arti...
We ran 3,638 meta-analyses on 125 RCTs (32,733 participants) to find out.
Effect sizes ranged from small to medium (Hedges’ g = 0.16–0.74), with guided interventions & LMICs showing greater benefits.
www.sciencedirect.com/science/arti...
Digital mental health interventions for the treatment of depression: A multiverse meta-analysis
The varying sizes of effects in published meta-analyses on digital interventions for depression prompt questions about their efficacy.A systematic sea…
www.sciencedirect.com
November 19, 2024 at 11:50 AM
Are digital interventions for depression effective?
We ran 3,638 meta-analyses on 125 RCTs (32,733 participants) to find out.
Effect sizes ranged from small to medium (Hedges’ g = 0.16–0.74), with guided interventions & LMICs showing greater benefits.
www.sciencedirect.com/science/arti...
We ran 3,638 meta-analyses on 125 RCTs (32,733 participants) to find out.
Effect sizes ranged from small to medium (Hedges’ g = 0.16–0.74), with guided interventions & LMICs showing greater benefits.
www.sciencedirect.com/science/arti...
Reposted by Constantin Yves Plessen
Blog on our new JoPACS viewpoint led by @molthof.bsky.social, highlighting problems of ignoring socio-environmental causes for psychopathology, using the example of the p-factor for which all dominant theories position liability *within* the person.
eiko-fried.com/causes-of-me...
eiko-fried.com/causes-of-me...
Are causes of mental disorders in the person or in the environment? » Eiko Fried
Brief summary of our new paper on the personal-internal reification of p-factor causes with Merlijn Olthof and Anna Lichtwarck-Aschoff
eiko-fried.com
November 19, 2024 at 10:40 AM
Blog on our new JoPACS viewpoint led by @molthof.bsky.social, highlighting problems of ignoring socio-environmental causes for psychopathology, using the example of the p-factor for which all dominant theories position liability *within* the person.
eiko-fried.com/causes-of-me...
eiko-fried.com/causes-of-me...
Reposted by Constantin Yves Plessen
Disease prevalence in US states before & after vaccine introduction
Graphic from Edward Tufte
More graphics.wsj.com/infectious-d... 🧪
Graphic from Edward Tufte
More graphics.wsj.com/infectious-d... 🧪
November 15, 2024 at 5:00 AM
Disease prevalence in US states before & after vaccine introduction
Graphic from Edward Tufte
More graphics.wsj.com/infectious-d... 🧪
Graphic from Edward Tufte
More graphics.wsj.com/infectious-d... 🧪
Reposted by Constantin Yves Plessen
Are there any Meta-Science / Open Science starter packs? Maybe @forrt.bsky.social or @psysciacc.bsky.social know?
November 17, 2024 at 9:37 PM
Are there any Meta-Science / Open Science starter packs? Maybe @forrt.bsky.social or @psysciacc.bsky.social know?
Chaotic good
The {messy} R package now has a pkgdown site with documentation: nrennie.rbind.io/messy/
#RStats #StatsEd
#RStats #StatsEd
November 17, 2024 at 8:46 PM
Chaotic good
Really enjoy @bsky.app so far, feels like pre-Elmo academic twitter.
Currently using @en.blueark.app to import my tweets from Twitter!
Currently using @en.blueark.app to import my tweets from Twitter!
November 15, 2024 at 1:35 PM
Really enjoy @bsky.app so far, feels like pre-Elmo academic twitter.
Currently using @en.blueark.app to import my tweets from Twitter!
Currently using @en.blueark.app to import my tweets from Twitter!
Reposted by Constantin Yves Plessen
The Onion should buy Elsevier next
November 14, 2024 at 8:28 PM
The Onion should buy Elsevier next
Reposted by Constantin Yves Plessen
Starter pack for EMA, ESM, and Intensive Longitudinal Researchers.
Feel free to share, follow, and nominate. Suggestions welcome!
go.bsky.app/LzqJoUX
#ESM #EMA #AA #IntensiveLongitudinalResearch
Feel free to share, follow, and nominate. Suggestions welcome!
go.bsky.app/LzqJoUX
#ESM #EMA #AA #IntensiveLongitudinalResearch
October 24, 2024 at 10:09 AM
Starter pack for EMA, ESM, and Intensive Longitudinal Researchers.
Feel free to share, follow, and nominate. Suggestions welcome!
go.bsky.app/LzqJoUX
#ESM #EMA #AA #IntensiveLongitudinalResearch
Feel free to share, follow, and nominate. Suggestions welcome!
go.bsky.app/LzqJoUX
#ESM #EMA #AA #IntensiveLongitudinalResearch
Moving here from Twitter for reasons that are way to strange to put into words.
One of the weirder timelines.
I found these Starter Packs great to find a new home, full of psychologists, research synthesists, open science enthusiasts, R users, meta-researchers, network & measurement people!
1/n
One of the weirder timelines.
I found these Starter Packs great to find a new home, full of psychologists, research synthesists, open science enthusiasts, R users, meta-researchers, network & measurement people!
1/n
November 13, 2024 at 6:57 PM
Moving here from Twitter for reasons that are way to strange to put into words.
One of the weirder timelines.
I found these Starter Packs great to find a new home, full of psychologists, research synthesists, open science enthusiasts, R users, meta-researchers, network & measurement people!
1/n
One of the weirder timelines.
I found these Starter Packs great to find a new home, full of psychologists, research synthesists, open science enthusiasts, R users, meta-researchers, network & measurement people!
1/n
Reposted by Constantin Yves Plessen
I'm starting my own scientific journal with Curvenote Journals!
ScienceUX.org will have
🔬original research
⬇️open source tools
👨🏫teaching materials
All related to making science easier to produce and consume for scientists.
More here:
https://buff.ly/4dkZ3ex
ScienceUX.org will have
🔬original research
⬇️open source tools
👨🏫teaching materials
All related to making science easier to produce and consume for scientists.
More here:
https://buff.ly/4dkZ3ex
September 13, 2024 at 4:51 AM
I'm starting my own scientific journal with Curvenote Journals!
ScienceUX.org will have
🔬original research
⬇️open source tools
👨🏫teaching materials
All related to making science easier to produce and consume for scientists.
More here:
https://buff.ly/4dkZ3ex
ScienceUX.org will have
🔬original research
⬇️open source tools
👨🏫teaching materials
All related to making science easier to produce and consume for scientists.
More here:
https://buff.ly/4dkZ3ex
PhDone! 🎓
Thrilled to share that I successfully defended my dissertation last week! Immense gratitude to my supervisor Pim Cuijpers (@pimcuijpers) and Eirini Karyotaki (@KaryotakiEirini) for their support and guidance throughout the years!
1/3
Thrilled to share that I successfully defended my dissertation last week! Immense gratitude to my supervisor Pim Cuijpers (@pimcuijpers) and Eirini Karyotaki (@KaryotakiEirini) for their support and guidance throughout the years!
1/3
November 16, 2024 at 8:50 AM
PhDone! 🎓
Thrilled to share that I successfully defended my dissertation last week! Immense gratitude to my supervisor Pim Cuijpers (@pimcuijpers) and Eirini Karyotaki (@KaryotakiEirini) for their support and guidance throughout the years!
1/3
Thrilled to share that I successfully defended my dissertation last week! Immense gratitude to my supervisor Pim Cuijpers (@pimcuijpers) and Eirini Karyotaki (@KaryotakiEirini) for their support and guidance throughout the years!
1/3
🎓 Excited to announce my PhD defense! 🎓
Research synthesis on psychological interventions for mental health.
📅 Wednesday, June 19, 2024
🕚 11:45 am
📍 Auditorium, Main Building, VU Amsterdam
🎥 Live stream: https://www.youtube.com/VUBeadlesOffice
ℹ️ More info:...
Research synthesis on psychological interventions for mental health.
📅 Wednesday, June 19, 2024
🕚 11:45 am
📍 Auditorium, Main Building, VU Amsterdam
🎥 Live stream: https://www.youtube.com/VUBeadlesOffice
ℹ️ More info:...
November 16, 2024 at 8:50 AM
🎓 Excited to announce my PhD defense! 🎓
Research synthesis on psychological interventions for mental health.
📅 Wednesday, June 19, 2024
🕚 11:45 am
📍 Auditorium, Main Building, VU Amsterdam
🎥 Live stream: https://www.youtube.com/VUBeadlesOffice
ℹ️ More info:...
Research synthesis on psychological interventions for mental health.
📅 Wednesday, June 19, 2024
🕚 11:45 am
📍 Auditorium, Main Building, VU Amsterdam
🎥 Live stream: https://www.youtube.com/VUBeadlesOffice
ℹ️ More info:...
Reposted by Constantin Yves Plessen
Did you know of this meta-analytic site by Prof Cuijpers et al. featuring 100s of RCTs?
In the below video I'll show researchers (part I) & clients (part II) how to run a meta-analysis looking into the effect of CBT on depression in older adults within 2 minutes.
🖥️ eiko-fried.com/wp-content/u...
In the below video I'll show researchers (part I) & clients (part II) how to run a meta-analysis looking into the effect of CBT on depression in older adults within 2 minutes.
🖥️ eiko-fried.com/wp-content/u...
January 15, 2024 at 1:12 PM
Did you know of this meta-analytic site by Prof Cuijpers et al. featuring 100s of RCTs?
In the below video I'll show researchers (part I) & clients (part II) how to run a meta-analysis looking into the effect of CBT on depression in older adults within 2 minutes.
🖥️ eiko-fried.com/wp-content/u...
In the below video I'll show researchers (part I) & clients (part II) how to run a meta-analysis looking into the effect of CBT on depression in older adults within 2 minutes.
🖥️ eiko-fried.com/wp-content/u...