Sercan Kahveci
@sercankahveci.bsky.social
Senior Scientist @ Salzburg University // Interested in approach-avoidance biases, eating behavior, networks, and reliability // #rstats
Idea: graph layout methodology based on spring / Fruchterman-Reingold algorithm but with a strong radial symmetry constraint. Would probably need to be optimized using simulated annealing.
November 17, 2025 at 12:00 PM
Idea: graph layout methodology based on spring / Fruchterman-Reingold algorithm but with a strong radial symmetry constraint. Would probably need to be optimized using simulated annealing.
Reposted by Sercan Kahveci
One of the adaptive designs we are seeing more frequently is the Sequential Multiple Assignment Randomised Trial (or SMART trial) 1/7
#MethodologyMonday #126
#MethodologyMonday #126
October 20, 2025 at 6:39 AM
One of the adaptive designs we are seeing more frequently is the Sequential Multiple Assignment Randomised Trial (or SMART trial) 1/7
#MethodologyMonday #126
#MethodologyMonday #126
it is astonishing how many people think that a vegetarian diet is unaffordably expensive
The Price is Not Right: Consumers Overestimate Prices of Plant-Based Meat Alternatives: https://osf.io/vsqtx
October 20, 2025 at 9:56 AM
it is astonishing how many people think that a vegetarian diet is unaffordably expensive
think I just found a way to linearly model which person-level variables increase or decrease sample-wide reliability... very cool
October 20, 2025 at 8:19 AM
think I just found a way to linearly model which person-level variables increase or decrease sample-wide reliability... very cool
Reposted by Sercan Kahveci
💡 Came across this nice tool today:
🎨 qualpal for algorithmically choosing maximally distinct colors under certain restrictions #dataviz
JOSS paper, online tool, R package #rstats
joss.theoj.org/papers/10.21...
🎨 qualpal for algorithmically choosing maximally distinct colors under certain restrictions #dataviz
JOSS paper, online tool, R package #rstats
joss.theoj.org/papers/10.21...
Qualpal: Qualitative Color Palettes for Everyone
Larsson, J., (2025). Qualpal: Qualitative Color Palettes for Everyone. Journal of Open Source Software, 10(114), 8936, https://doi.org/10.21105/joss.08936
joss.theoj.org
October 17, 2025 at 9:12 AM
💡 Came across this nice tool today:
🎨 qualpal for algorithmically choosing maximally distinct colors under certain restrictions #dataviz
JOSS paper, online tool, R package #rstats
joss.theoj.org/papers/10.21...
🎨 qualpal for algorithmically choosing maximally distinct colors under certain restrictions #dataviz
JOSS paper, online tool, R package #rstats
joss.theoj.org/papers/10.21...
"Among articles stating that data was available upon request, only 17% shared data upon request."
My article "Data is not available upon request" was published in Meta-Psychology. Very happy to see this out!
open.lnu.se/index.php/me...
open.lnu.se/index.php/me...
LnuOpen
| Meta-Psychology
open.lnu.se
October 6, 2025 at 8:08 AM
"Among articles stating that data was available upon request, only 17% shared data upon request."
Cool study tracking mood across the day - confirms that mood is best in the morning and worst in the evening; and also better in summer and autumn than in winter and spring. Would have loved to see analysis of subgroups (age, chronotype) and of dispersion
mentalhealth.bmj.com/content/28/1...
mentalhealth.bmj.com/content/28/1...
Will things feel better in the morning? A time-of-day analysis of mental health and wellbeing from nearly 1 million observations
Background Mood is known to change over seasons of the year, days of the week, and even over the course of the day (diurnally). But although broader mental health and well-being also vary over months ...
mentalhealth.bmj.com
July 24, 2025 at 11:42 AM
Cool study tracking mood across the day - confirms that mood is best in the morning and worst in the evening; and also better in summer and autumn than in winter and spring. Would have loved to see analysis of subgroups (age, chronotype) and of dispersion
mentalhealth.bmj.com/content/28/1...
mentalhealth.bmj.com/content/28/1...
Reposted by Sercan Kahveci
AI literally has made us unable to communicate/search for stuff, e.g. "Greek present perfect continuous":
1) Greek does not have this tense, and yet it's the top result on Google.
2) να is not a verb, "Έχω διαβάζοντας το βιβλίο για μία εβδομάδα." is nonsense.
1) Greek does not have this tense, and yet it's the top result on Google.
2) να is not a verb, "Έχω διαβάζοντας το βιβλίο για μία εβδομάδα." is nonsense.
March 17, 2024 at 7:44 AM
AI literally has made us unable to communicate/search for stuff, e.g. "Greek present perfect continuous":
1) Greek does not have this tense, and yet it's the top result on Google.
2) να is not a verb, "Έχω διαβάζοντας το βιβλίο για μία εβδομάδα." is nonsense.
1) Greek does not have this tense, and yet it's the top result on Google.
2) να is not a verb, "Έχω διαβάζοντας το βιβλίο για μία εβδομάδα." is nonsense.
Check out my R package for computing permutation-based split-half reliability here :)
New on CRAN: rapidsplithalf (0.2). View at https://CRAN.R-project.org/package=rapidsplithalf
June 21, 2025 at 2:40 PM
Check out my R package for computing permutation-based split-half reliability here :)
Reposted by Sercan Kahveci
Just out! Our peer-reviewed critique of the Cass Review has been published by BMC Medical Research Methodology. Please read and share. We show that the Cass Review is fatally flawed and should not be the basis for policy or practice in transgender healthcare.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
May 10, 2025 at 12:31 PM
Just out! Our peer-reviewed critique of the Cass Review has been published by BMC Medical Research Methodology. Please read and share. We show that the Cass Review is fatally flawed and should not be the basis for policy or practice in transgender healthcare.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Note to self: read later
Want to align networks?
Challenging problem with new approach.
#complexity
(h/t @manlius.bsky.social )
doi.org/10.1038/s414...
Challenging problem with new approach.
#complexity
(h/t @manlius.bsky.social )
doi.org/10.1038/s414...
Probabilistic alignment of multiple networks - Nature Communications
Network alignment is a fundamental problem in several domains that aims at mapping nodes across networks. Here, the authors develop a probabilistic approach that assumes that observed networks are err...
doi.org
May 21, 2025 at 5:04 PM
Note to self: read later
Inoculation against critics and competitors seems a central part of health grifters' MO. Nothing comparable occurs in the professional health sphere. Maybe that should change if the field wants to preserve the wellbeing of its clients...
April 29, 2025 at 11:21 AM
Inoculation against critics and competitors seems a central part of health grifters' MO. Nothing comparable occurs in the professional health sphere. Maybe that should change if the field wants to preserve the wellbeing of its clients...
Reposted by Sercan Kahveci
I just attended a conference in the US. We had one speaker detained and two others turned away at the border.
There are great conferences and science in the US, but with the way things are right now, it’s too risky to attend.
Australian academics refuse to attend US conferences for fear of being detained
‘When academics fear travelling or partnering with US institutions, the impacts ripple through the entire global knowledge ecosystem,’ one says
www.theguardian.com
April 13, 2025 at 11:10 PM
I just attended a conference in the US. We had one speaker detained and two others turned away at the border.
Reposted by Sercan Kahveci
My colleague Dr. Julia Reichenberger is looking for doctoral students for her new project on emotion-focused therapy for binge-eating disorder at the LMU in Munich. 🤩
Prerequisite is a completed or advanced psychotherapy training. Application deadline is 31.05.2025.
job-portal.lmu.de/jobposting/0...
Prerequisite is a completed or advanced psychotherapy training. Application deadline is 31.05.2025.
job-portal.lmu.de/jobposting/0...
Wissenschaftlicher Mitarbeiter / Wissenschaftliche Mitarbeiterin (m/w/d)
job-portal.lmu.de
April 16, 2025 at 8:43 AM
My colleague Dr. Julia Reichenberger is looking for doctoral students for her new project on emotion-focused therapy for binge-eating disorder at the LMU in Munich. 🤩
Prerequisite is a completed or advanced psychotherapy training. Application deadline is 31.05.2025.
job-portal.lmu.de/jobposting/0...
Prerequisite is a completed or advanced psychotherapy training. Application deadline is 31.05.2025.
job-portal.lmu.de/jobposting/0...
Reposted by Sercan Kahveci
Have you been using a calorie counter app to track for at least 7 days? Please help 3 Master students at @univie.ac.at with their project by completing 2 short surveys one week apart.
🇬🇧 sosci.univie.ac.at/DataDonationE/
🇩🇪 sosci.univie.ac.at/datadonation/
🇬🇧 sosci.univie.ac.at/DataDonationE/
🇩🇪 sosci.univie.ac.at/datadonation/
April 3, 2025 at 12:06 PM
Have you been using a calorie counter app to track for at least 7 days? Please help 3 Master students at @univie.ac.at with their project by completing 2 short surveys one week apart.
🇬🇧 sosci.univie.ac.at/DataDonationE/
🇩🇪 sosci.univie.ac.at/datadonation/
🇬🇧 sosci.univie.ac.at/DataDonationE/
🇩🇪 sosci.univie.ac.at/datadonation/
Reposted by Sercan Kahveci
Increasing Sample Sizes in Psychology over Time: https://osf.io/vwub3
April 2, 2025 at 9:40 AM
Increasing Sample Sizes in Psychology over Time: https://osf.io/vwub3
I think the time is coming to back up your osf.io repositories on Zenodo and on your hard drive. Just in case OSF is put on the chopping block
March 22, 2025 at 8:06 AM
I think the time is coming to back up your osf.io repositories on Zenodo and on your hard drive. Just in case OSF is put on the chopping block
Reposted by Sercan Kahveci
"Same-sex love triangles in female monkeys" pubmed.ncbi.nlm.nih.gov/40107393/ This paper is like a monkey gossip column. "Her initial sexual partner persists in sexually soliciting the pivot female and tries to chase the female competitor away." 🐒❤️🐒❤️🐒
March 20, 2025 at 10:13 AM
"Same-sex love triangles in female monkeys" pubmed.ncbi.nlm.nih.gov/40107393/ This paper is like a monkey gossip column. "Her initial sexual partner persists in sexually soliciting the pivot female and tries to chase the female competitor away." 🐒❤️🐒❤️🐒
Thinking of making it a practice to have any paper I write about a clinical population be read by one or two members of that clinical population... would do a lot to prevent accidentally harming the most vulnerable in the community
March 19, 2025 at 10:33 AM
Thinking of making it a practice to have any paper I write about a clinical population be read by one or two members of that clinical population... would do a lot to prevent accidentally harming the most vulnerable in the community
Reposted by Sercan Kahveci
Are 'night owls' more at risk of suicidal thoughts & behaviours? New review on social & circadian rhythm dysregulation www.nationalelfservice.net?p=214327
Nick Donnelly on a recent systematic review, which finds a small assoc btwn identifying as a night owl & experiences of suicide.
🧵 THREAD
Nick Donnelly on a recent systematic review, which finds a small assoc btwn identifying as a night owl & experiences of suicide.
🧵 THREAD
Circadian rhythms and suicide thoughts and behaviours
Nick Donnelly blogs a systematic review finding that there is a small association between identifying as a night owl and experiences of suicide.
www.nationalelfservice.net
March 17, 2025 at 11:04 AM
Are 'night owls' more at risk of suicidal thoughts & behaviours? New review on social & circadian rhythm dysregulation www.nationalelfservice.net?p=214327
Nick Donnelly on a recent systematic review, which finds a small assoc btwn identifying as a night owl & experiences of suicide.
🧵 THREAD
Nick Donnelly on a recent systematic review, which finds a small assoc btwn identifying as a night owl & experiences of suicide.
🧵 THREAD
Reposted by Sercan Kahveci
Jungwissenschaftler:innen aufgepasst! Vom 15.09-16.09.25 findet unsere Summer School "Karrierecoaching (auch) außerhalb der Wissenschaft" im Rahmen der Fachgruppentagung Gesundheitspsychologie in Salzburg statt. Coach ist Dr. Cécile Schain.
February 26, 2025 at 7:32 AM
Jungwissenschaftler:innen aufgepasst! Vom 15.09-16.09.25 findet unsere Summer School "Karrierecoaching (auch) außerhalb der Wissenschaft" im Rahmen der Fachgruppentagung Gesundheitspsychologie in Salzburg statt. Coach ist Dr. Cécile Schain.
Reposted by Sercan Kahveci
Dissertation by Dr Rachel Los not only includes acknowledgements, but also .. anti-acknowledgements.
delta.tudelft.nl/en/article/a...
delta.tudelft.nl/en/article/a...
March 13, 2025 at 3:45 PM
Dissertation by Dr Rachel Los not only includes acknowledgements, but also .. anti-acknowledgements.
delta.tudelft.nl/en/article/a...
delta.tudelft.nl/en/article/a...
Reposted by Sercan Kahveci
Wir möchten noch einmal ganz herzlich zu unserem diesjährigen Fachgruppenkongress einladen (Deadline Einreichungen 23.03). Es wartet ein abwechslungsreiches Programm mit spannenden Themen auf euch: Karrierewege, Science2Policy, Sichtbarkeit der Gesundheitspsychologie uvm.
!!!Fristverlängerung bis 23.03.25 für Abstract/Beitragseinreichungen!!!
für die Konferenz der FG Gesundheitspsychologie in Salzburg, 16.-19. September 2025.
für die Konferenz der FG Gesundheitspsychologie in Salzburg, 16.-19. September 2025.
March 12, 2025 at 8:31 AM
Wir möchten noch einmal ganz herzlich zu unserem diesjährigen Fachgruppenkongress einladen (Deadline Einreichungen 23.03). Es wartet ein abwechslungsreiches Programm mit spannenden Themen auf euch: Karrierewege, Science2Policy, Sichtbarkeit der Gesundheitspsychologie uvm.
Reposted by Sercan Kahveci
These authors have done the Lord's work in synthesising multidisciplinary meta-analyses of individual & structural determinants of behaviour. What a fantastic overview. Hats off!
Focus on removing social & structural barriers rather than targeting knowledge & beliefs! www.nature.com/articles/s44...
Focus on removing social & structural barriers rather than targeting knowledge & beliefs! www.nature.com/articles/s44...
March 3, 2025 at 11:05 AM
These authors have done the Lord's work in synthesising multidisciplinary meta-analyses of individual & structural determinants of behaviour. What a fantastic overview. Hats off!
Focus on removing social & structural barriers rather than targeting knowledge & beliefs! www.nature.com/articles/s44...
Focus on removing social & structural barriers rather than targeting knowledge & beliefs! www.nature.com/articles/s44...
Don't miss the health psychology conference @ Salzburg on 16-19 September 2025! gesundheitspsychologie2025.de
!!!Fristverlängerung bis 23.03.25 für Abstract/Beitragseinreichungen!!!
für die Konferenz der FG Gesundheitspsychologie in Salzburg, 16.-19. September 2025.
für die Konferenz der FG Gesundheitspsychologie in Salzburg, 16.-19. September 2025.
February 28, 2025 at 12:12 PM
Don't miss the health psychology conference @ Salzburg on 16-19 September 2025! gesundheitspsychologie2025.de