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Mathias Harrer

@mathiasharrer.bsky.social
1.1K followers 438 following 14 posts

🎓 Researcher @ TU Munich & VU Amsterdam 🔍 Meta-Analysis, Statistical Software, Mental Health Research 🧑🏻‍💻 Maintainer: {dmetar}, {metapsyData}, {metapsyTools} in #rstats 🌎 mharrer.dev | metapsy.org 🦣 fediscience.org/@mathiasharrer

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Reposted by Mathias Harrer
Tim Kaiser @tkaiser.science · 15/01/2026
Nice overview in World Psychiatry by @pimcuijpers.bsky.social @toshi-frkw.bsky.social and @mathiasharrer.bsky.social
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Reposted by Mathias Harrer
Pim Cuijpers @pimcuijpers.bsky.social · 21/05/2025
No innovation in the treatment of depression will be a ’silver bullet’ that will dramatically change the outcomes. Only together can innovations really improve outcomes. Read our new paper in the Br J Psychiatry. With @mathiasharrer.bsky.social and @toshi-frkw.bsky.social doi.org/10.1192/bjp....
doi.org
Assessing the strength of innovations in the treatment of depression | The British Journal of Psychiatry | Cambridge Core
Assessing the strength of innovations in the treatment of depression
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Philipp Klein @jpkhl.bsky.social · 14/05/2025
Psychological internet interventions are effective in people suffering from depressive symptoms who do not meet criteria for depression yet. Particularly for those with at least moderate symptom severity @mathiasharrer.bsky.social @toshi-frkw.bsky.social bit.ly/4kcYMxS
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Pim Cuijpers @pimcuijpers.bsky.social · 29/04/2025
Our new network meta-analysis of treatment formats in CBT for eating disorders found no significant difference between individual, group, guided self-help and unguided self, and all were effective. With @mathiasharrer.bsky.social, @claramiguel.bsky.social and others doi.org/10.1080/1650...
doi.org
Delivery formats of cognitive behavior therapy in adults with eating disorders: a network meta-analysis
Although CBT has been found to be effective in the treatment of eating disorders, it is not clear if there are differences between treatment formats. We conducted a network meta-analysis (NMA) of r...
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Reposted by Mathias Harrer
Toshi Furukawa @toshi-frkw.bsky.social · 23/04/2025
Published today in Nature Medicine. In one of the world’s largest RCTs of its kind (n=3,936), a smartphone app teaching 5 key cognitive-behavioral therapy skills improved subthreshold depression—and the effects lasted 6 months. www.nature.com/articles/s41...
nature.com
Cognitive behavioral therapy skills via a smartphone app for subthreshold depression among adults in the community: the RESiLIENT randomized controlled trial - Nature Medicine
A trial that used a master randomized design found that the skills commonly found in smartphone-based cognitive behavioral therapy, when tested alone or in combination with behavioral activation, were...
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Toshi Furukawa @toshi-frkw.bsky.social · 21/04/2025
Pim Cuijpers and the team has published a comprehensive meta-analysis of CBT for 12 mental disorders, from psychosis to depression to specific phobia. jamanetwork.com/journals/jam... @pimcuijpers.bsky.social @mathiasharrer.bsky.social @claramiguel.bsky.social
jamanetwork.com
Cognitive Behavior Therapy for Mental Disorders in Adults
This unified series of meta-analyses examines the effect sizes of cognitive behavior therapy for many mental and eating disorders on symptoms of the respective disorders using uniform methodologies fo...
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Reposted by Mathias Harrer
Pim Cuijpers @pimcuijpers.bsky.social · 16/04/2025
Today our new unified series of meta-analyses of CBT for 11 mental disorders was published in JAMA Psychiatry. Another nice example of a 'next level' meta-analysis of the Metapsy initiative. With @mathiasharrer.bsky.social, @claramiguel.bsky.social, and many others jamanetwork.com/journals/jam...
jamanetwork.com
Cognitive Behavior Therapy for Mental Disorders in Adults
This unified series of meta-analyses examines the effect sizes of cognitive behavior therapy for many mental and eating disorders on symptoms of the respective disorders using uniform methodologies fo...
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Reposted by Mathias Harrer
Clara Miguel @claramiguel.bsky.social · 13/03/2025
Our new paper on self-reports vs clinician ratings of efficacies of psychotherapies for depression can be read open-access in Epidemiology and Psychiatric Sciences! Here is a short summary of our findings🧵 www.cambridge.org/core/journal...
cambridge.org
Self-reports vs clinician ratings of efficacies of psychotherapies for depression: a meta-analysis of randomized trials | Epidemiology and Psychiatric Sciences | Cambridge Core
Self-reports vs clinician ratings of efficacies of psychotherapies for depression: a meta-analysis of randomized trials - Volume 34
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Pim Cuijpers @pimcuijpers.bsky.social · 04/12/2024
One could say that the research field on prevention of depression is stuck. Interested in this field and in solutions how to continue? Read my new open access paper in Current Directions in Psychological Science doi.org/10.1177/0963...
doi.org
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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Constantin Yves Plessen @cyplessen.bsky.social · 03/12/2024
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.
constantinyvesplessen.com
Constantin Yves Plessen
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Mathias Harrer @mathiasharrer.bsky.social · 22/11/2024
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
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Tim Kaiser @tkaiser.science · 21/11/2024
In "What if we wait? Using synthetic waiting lists to estimate treatment effects in routine outcome data", we demonstrated how to estimate putative between-group effects from data sets with only within-subjects measurements. Basically a g-estimation approach. www.tandfonline.com/doi/full/10....
tandfonline.com
What if we wait? Using synthetic waiting lists to estimate treatment effects in routine outcome data
Objective: Due to the lack of randomization, pre–post routine outcome data precludes causal conclusions. We propose the “synthetic waiting list” (SWL) control group to overcome this limitation.Meth...
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Reposted by Mathias Harrer
James E. Pustejovsky @jepusto.bsky.social · 20/11/2024
Question for my #EvidenceSynthesis #MetaAnalysis #SystematicReview folks: I'm organizing the 2025 meeting of the Society for Research Synthesis Methods (www.srsm.org). Currently working on the call for submissions, which it has me dreaming about sessions I would love to see at the conference....
srsm.org
Society for Research Synthesis Methodology
The Society for Research Synthesis Methodology (SRSM) is an organization of scholars and practitioners interested in the development and application of research synthesis methodology. This website ser...
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Mathias Harrer @mathiasharrer.bsky.social · 20/11/2024
Read our new article just published in The Lancet Psychiatry. Thanks to everyone involved in the IPD-PrevDep Consortium \w Claudia Buntrock, @pimcuijpers.bsky.social, @toshi-frkw.bsky.social, and so many more.
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Reposted by Mathias Harrer
James E. Pustejovsky @jepusto.bsky.social · 13/11/2024
Okay made a starter pack for folks into evidence synthesis, systematic review, meta-analysis. I've surely missed people, so please ping with suggestions or self-nominations. go.bsky.app/JLw77VZ
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Mathias Harrer @mathiasharrer.bsky.social · 10/01/2024
Digital interventions are attractive to increase treatment uptake in depression, but we also need to know who requires other forms of care. Here, we use meta-analytic predictive models to derive a precision treatment rule for digital stress interventions in Px with depression. bit.ly/3S9V6Sq
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Mathias Harrer @mathiasharrer.bsky.social · 21/12/2023
A highly relevant insight, especially for psychotherapy trialists 👇
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Mathias Harrer @mathiasharrer.bsky.social · 18/11/2023
New paper on five decades of depression psychotherapy research in the American Psychologist (led by Pim Cuijpers): doi.org/10.1037/amp0... We found CBT is not only by far the best-examined therapy, but that the share of CBT among all published trials is increasing with every year.
A graph showing the predicted studies published per year in depression psychotherapy research. It shows an overall increase in publication rates  over the last 50 years, with cognitive behavioral treatment studies rising particularly fast.
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Mathias Harrer @mathiasharrer.bsky.social · 07/11/2023
"For in psychology, there are experimental methods and conceptual confusion. The experimental method makes us think we have the means of getting rid of the problems which trouble us; but problem and method pass one another by." Great paper on W.'s mysterious remark: jhaponline.org/jhap/article...
jhaponline.org
“A misleading parallel”: Wittgenstein on Conceptual Confusion in Psychology and the Semantics...
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Mathias Harrer @mathiasharrer.bsky.social · 03/11/2023
Belated Halloween greetings from your friend trained in biostatistics.
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Reposted by Mathias Harrer
Tim Kaiser @tkaiser.science · 02/11/2023
Very nice! @mathiasharrer.bsky.social et al.'s metapsy now has a data base of PTSD studies: www.metapsy.org/database/ptsd
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