Peter Kvam
@peterkvam.bsky.social
Like a celebrity fitness instructor, many hours of my job involve getting models to run. Decision-making, cognitive modeling, AI. Assistant Prof @ OSU Psychology
Reposted by Peter Kvam
Out now in Social Cognition! We present the "Tug-of-War" (computational) model of attitude associations. It posits a specific mechanism behind behavior on implicit cognition tasks (IAT here; working to implement it to other tasks). We believe it enhances theory and psychometrics🙌
First first-author paper submitted; preprint: osf.io/preprints/ps... We (@colinsmithpsych.bsky.social and @peterkvam.bsky.social ) give a tutorial on a mathematical model of attitudes associations, the Tug-of-war model (TOW), as applied to IAT data (N > 10,000). TOW quantifies associations as (1/13)
OSF
https://osf.io/preprints/psyarxiv/5j3sx😌
October 21, 2025 at 5:23 AM
Out now in Social Cognition! We present the "Tug-of-War" (computational) model of attitude associations. It posits a specific mechanism behind behavior on implicit cognition tasks (IAT here; working to implement it to other tasks). We believe it enhances theory and psychometrics🙌
Machine learning / AI approaches can work well for model comparison and fitting, but how do they stack up against likelihood-based methods like hierarchical Bayes / MCMC?
link.springer.com/article/10.3...
(Generally the same for fitting, but neural networks were better for model comparison!)
link.springer.com/article/10.3...
(Generally the same for fitting, but neural networks were better for model comparison!)
Comparing likelihood-based and likelihood-free approaches to fitting and comparing models of intertemporal choice - Behavior Research Methods
Machine learning methods have recently begun to be used for fitting and comparing cognitive models, yet they have mainly focused on methods for dealing with models that lack tractable likelihoods. Eva...
link.springer.com
August 11, 2025 at 7:35 PM
Machine learning / AI approaches can work well for model comparison and fitting, but how do they stack up against likelihood-based methods like hierarchical Bayes / MCMC?
link.springer.com/article/10.3...
(Generally the same for fitting, but neural networks were better for model comparison!)
link.springer.com/article/10.3...
(Generally the same for fitting, but neural networks were better for model comparison!)
Reposted by Peter Kvam
The 2025 MathPsych/ICCM meeting starts tomorrow with a day of workshops and symposia!
#iccmpsyched but can't make it this year? Get your fomo here:
#iccmpsyched but can't make it this year? Get your fomo here:
Society for Mathematical Psychology
Online conferences, news, membership functions, and information about the Society
mathpsych.org
July 24, 2025 at 8:53 PM
The 2025 MathPsych/ICCM meeting starts tomorrow with a day of workshops and symposia!
#iccmpsyched but can't make it this year? Get your fomo here:
#iccmpsyched but can't make it this year? Get your fomo here:
What are the differences between diffusion and accumulator models, and can you even tell them apart?
"The Tweedledum and Tweedledee of dynamic decisions: Discriminating between diffusion decision and accumulator models" open access link:
link.springer.com/article/10.3...
"The Tweedledum and Tweedledee of dynamic decisions: Discriminating between diffusion decision and accumulator models" open access link:
link.springer.com/article/10.3...
The Tweedledum and Tweedledee of dynamic decisions: Discriminating between diffusion decision and accumulator models - Psychonomic Bulletin & Review
Theories of dynamic decision-making are typically built on evidence accumulation, which is modeled using racing accumulators or diffusion models that track a shifting balance of support over time. How...
link.springer.com
April 16, 2025 at 2:25 PM
What are the differences between diffusion and accumulator models, and can you even tell them apart?
"The Tweedledum and Tweedledee of dynamic decisions: Discriminating between diffusion decision and accumulator models" open access link:
link.springer.com/article/10.3...
"The Tweedledum and Tweedledee of dynamic decisions: Discriminating between diffusion decision and accumulator models" open access link:
link.springer.com/article/10.3...
Now officially out and open access:
doi.org/10.1037/rev0...
doi.org/10.1037/rev0...
April 14, 2025 at 4:52 PM
Now officially out and open access:
doi.org/10.1037/rev0...
doi.org/10.1037/rev0...
Reposted by Peter Kvam
🚨 Applications for the 22nd Summer Institute on Bounded Rationality are now open!
🌐 Join us in Berlin @mpib-berlin.bsky.social from June 17–25, 2025 to explore "Decision Making in a Digital World".
✏️ Application deadline is March 9 - more info at 👇!!
www.mpib-berlin.mpg.de/research/res...
🌐 Join us in Berlin @mpib-berlin.bsky.social from June 17–25, 2025 to explore "Decision Making in a Digital World".
✏️ Application deadline is March 9 - more info at 👇!!
www.mpib-berlin.mpg.de/research/res...
Summer Institute
www.mpib-berlin.mpg.de
February 4, 2025 at 2:42 PM
🚨 Applications for the 22nd Summer Institute on Bounded Rationality are now open!
🌐 Join us in Berlin @mpib-berlin.bsky.social from June 17–25, 2025 to explore "Decision Making in a Digital World".
✏️ Application deadline is March 9 - more info at 👇!!
www.mpib-berlin.mpg.de/research/res...
🌐 Join us in Berlin @mpib-berlin.bsky.social from June 17–25, 2025 to explore "Decision Making in a Digital World".
✏️ Application deadline is March 9 - more info at 👇!!
www.mpib-berlin.mpg.de/research/res...
Reposted by Peter Kvam
Here's a starter pack for mathematical psychology! please add if you know folks who should be on here go.bsky.app/QNKpfeS
November 9, 2024 at 2:17 PM
Here's a starter pack for mathematical psychology! please add if you know folks who should be on here go.bsky.app/QNKpfeS
Reposted by Peter Kvam
I am currently co-organizing a preconference for Psychonomics with the topic "Memory in the Wild". Registration will close soon! Check it out: mathpsych.org/conference/17/
Society for Mathematical Psychology
Online conferences, news, membership functions, and information about the Society
mathpsych.org
October 31, 2024 at 8:07 PM
I am currently co-organizing a preconference for Psychonomics with the topic "Memory in the Wild". Registration will close soon! Check it out: mathpsych.org/conference/17/
How do people make good decisions when their options change over time, such as dynamic housing markets?
New paper at Psych Review suggests evidence is accumulated for unavailable options -- a serious challenge to "option-specific" diffusion / accumulator models:
psycnet.apa.org/fulltext/202...
New paper at Psych Review suggests evidence is accumulated for unavailable options -- a serious challenge to "option-specific" diffusion / accumulator models:
psycnet.apa.org/fulltext/202...
APA PsycNet
psycnet.apa.org
October 2, 2024 at 1:03 PM
How do people make good decisions when their options change over time, such as dynamic housing markets?
New paper at Psych Review suggests evidence is accumulated for unavailable options -- a serious challenge to "option-specific" diffusion / accumulator models:
psycnet.apa.org/fulltext/202...
New paper at Psych Review suggests evidence is accumulated for unavailable options -- a serious challenge to "option-specific" diffusion / accumulator models:
psycnet.apa.org/fulltext/202...
Reposted by Peter Kvam
First first-author paper submitted; preprint: osf.io/preprints/ps... We (@colinsmithpsych.bsky.social and @peterkvam.bsky.social ) give a tutorial on a mathematical model of attitudes associations, the Tug-of-war model (TOW), as applied to IAT data (N > 10,000). TOW quantifies associations as (1/13)
OSF
https://osf.io/preprints/psyarxiv/5j3sx😌
September 2, 2024 at 5:39 AM
First first-author paper submitted; preprint: osf.io/preprints/ps... We (@colinsmithpsych.bsky.social and @peterkvam.bsky.social ) give a tutorial on a mathematical model of attitudes associations, the Tug-of-war model (TOW), as applied to IAT data (N > 10,000). TOW quantifies associations as (1/13)
Reposted by Peter Kvam
VOTE NOW! While you are enjoying the Virtual MathPsych/ICCM 2024 pre-recorded presentations, don't forget to hit the ❤️ up at the top for your favorites to vote for the 2024 People's Choice Awards. One award is given for the MathPsych track and one for ICCM track. #iccmpsyched
June 19, 2024 at 4:02 PM
VOTE NOW! While you are enjoying the Virtual MathPsych/ICCM 2024 pre-recorded presentations, don't forget to hit the ❤️ up at the top for your favorites to vote for the 2024 People's Choice Awards. One award is given for the MathPsych track and one for ICCM track. #iccmpsyched
Reposted by Peter Kvam
Don’t miss your opportunity to discuss a career in mathematical psychology with 2022 Senior Fellow Jerome Busemeyer in the live Q&A on June 18 at 12:30 EDT. Watch his "Conversation with a Senior Fellow" at mathpsych.org/presentation...
#iccmpsyched
#iccmpsyched
June 18, 2024 at 6:18 AM
Don’t miss your opportunity to discuss a career in mathematical psychology with 2022 Senior Fellow Jerome Busemeyer in the live Q&A on June 18 at 12:30 EDT. Watch his "Conversation with a Senior Fellow" at mathpsych.org/presentation...
#iccmpsyched
#iccmpsyched
Reposted by Peter Kvam
👀 READY FOR VIEWING AT VMP2024 👀
Pre-recorded presentations are posted for viewing for the Judgment session in the "Day 2" room. Live Q&A will start June 18 at 12:00 EDT. #iccmpsyched
mathpsych.org/session/400
Pre-recorded presentations are posted for viewing for the Judgment session in the "Day 2" room. Live Q&A will start June 18 at 12:00 EDT. #iccmpsyched
mathpsych.org/session/400
Society for Mathematical Psychology
Online conferences, news, membership functions, and information about the Society
mathpsych.org
June 18, 2024 at 6:23 AM
👀 READY FOR VIEWING AT VMP2024 👀
Pre-recorded presentations are posted for viewing for the Judgment session in the "Day 2" room. Live Q&A will start June 18 at 12:00 EDT. #iccmpsyched
mathpsych.org/session/400
Pre-recorded presentations are posted for viewing for the Judgment session in the "Day 2" room. Live Q&A will start June 18 at 12:00 EDT. #iccmpsyched
mathpsych.org/session/400
Reposted by Peter Kvam
👀 VIEWING IS LIVE AT VMP2024 👀
Pre-recorded presentations are posted for viewing for the Development & Dynamics session in the "Day 2" room. Live Q&A with the authors will start June 18 at 13:00 EDT. #iccmpsyched
mathpsych.org/session/398
Pre-recorded presentations are posted for viewing for the Development & Dynamics session in the "Day 2" room. Live Q&A with the authors will start June 18 at 13:00 EDT. #iccmpsyched
mathpsych.org/session/398
Society for Mathematical Psychology
Online conferences, news, membership functions, and information about the Society
mathpsych.org
June 18, 2024 at 6:28 AM
👀 VIEWING IS LIVE AT VMP2024 👀
Pre-recorded presentations are posted for viewing for the Development & Dynamics session in the "Day 2" room. Live Q&A with the authors will start June 18 at 13:00 EDT. #iccmpsyched
mathpsych.org/session/398
Pre-recorded presentations are posted for viewing for the Development & Dynamics session in the "Day 2" room. Live Q&A with the authors will start June 18 at 13:00 EDT. #iccmpsyched
mathpsych.org/session/398
Reposted by Peter Kvam
Virtual MathPsych/ICCM 2024 is LIVE at mathpsych.org/conference/16/! 👀 Watch the pre-recorded talks at your leisure. Then join in for the live Q&A with the authors, held via zoom; details on
mathpsych.org/conference/1...
#iccmpsyched
mathpsych.org/conference/1...
#iccmpsyched
June 16, 2024 at 6:12 PM
Virtual MathPsych/ICCM 2024 is LIVE at mathpsych.org/conference/16/! 👀 Watch the pre-recorded talks at your leisure. Then join in for the live Q&A with the authors, held via zoom; details on
mathpsych.org/conference/1...
#iccmpsyched
mathpsych.org/conference/1...
#iccmpsyched
Reposted by Peter Kvam
👀 WATCH NOW! 👀
Pre-recorded presentations are posted for viewing for the VMP 2024 Methods & Models session in the "Day 1" room. Live Q&A will start June 17, at 12:00 EDT.
mathpsych.org/session/409
#iccmpsyched
Pre-recorded presentations are posted for viewing for the VMP 2024 Methods & Models session in the "Day 1" room. Live Q&A will start June 17, at 12:00 EDT.
mathpsych.org/session/409
#iccmpsyched
Society for Mathematical Psychology
Online conferences, news, membership functions, and information about the Society
mathpsych.org
June 16, 2024 at 6:16 PM
👀 WATCH NOW! 👀
Pre-recorded presentations are posted for viewing for the VMP 2024 Methods & Models session in the "Day 1" room. Live Q&A will start June 17, at 12:00 EDT.
mathpsych.org/session/409
#iccmpsyched
Pre-recorded presentations are posted for viewing for the VMP 2024 Methods & Models session in the "Day 1" room. Live Q&A will start June 17, at 12:00 EDT.
mathpsych.org/session/409
#iccmpsyched
Reposted by Peter Kvam
👀 READY TO WATCH NOW 👀
Pre-recorded presentations are posted for viewing for the Virtual MathPsych Measurement & Reasoning session in the "Day 1" room. Live Q&A will start June 17, at 13:00 EDT.
mathpsych.org/session/396
#iccmpsyched
Pre-recorded presentations are posted for viewing for the Virtual MathPsych Measurement & Reasoning session in the "Day 1" room. Live Q&A will start June 17, at 13:00 EDT.
mathpsych.org/session/396
#iccmpsyched
June 16, 2024 at 8:39 PM
👀 READY TO WATCH NOW 👀
Pre-recorded presentations are posted for viewing for the Virtual MathPsych Measurement & Reasoning session in the "Day 1" room. Live Q&A will start June 17, at 13:00 EDT.
mathpsych.org/session/396
#iccmpsyched
Pre-recorded presentations are posted for viewing for the Virtual MathPsych Measurement & Reasoning session in the "Day 1" room. Live Q&A will start June 17, at 13:00 EDT.
mathpsych.org/session/396
#iccmpsyched
Reposted by Peter Kvam
👩🏫 FAST TALKS ARE LIVE FOR VIEWING! 👨🏫
Pre-recorded presentations are posted for viewing for the VMP2024 Fast Talk session in the "Day 1" room. Fast Talks are VMP’s virtual poster sessions. Live Q&A with the authors will start June 17 at 14:00 EDT.
mathpsych.org/session/397
#iccmpsyched
Pre-recorded presentations are posted for viewing for the VMP2024 Fast Talk session in the "Day 1" room. Fast Talks are VMP’s virtual poster sessions. Live Q&A with the authors will start June 17 at 14:00 EDT.
mathpsych.org/session/397
#iccmpsyched
June 16, 2024 at 8:51 PM
👩🏫 FAST TALKS ARE LIVE FOR VIEWING! 👨🏫
Pre-recorded presentations are posted for viewing for the VMP2024 Fast Talk session in the "Day 1" room. Fast Talks are VMP’s virtual poster sessions. Live Q&A with the authors will start June 17 at 14:00 EDT.
mathpsych.org/session/397
#iccmpsyched
Pre-recorded presentations are posted for viewing for the VMP2024 Fast Talk session in the "Day 1" room. Fast Talks are VMP’s virtual poster sessions. Live Q&A with the authors will start June 17 at 14:00 EDT.
mathpsych.org/session/397
#iccmpsyched
Reposted by Peter Kvam
The 2nd talk in Measurement & Reasoning is “Revisiting the role operational definitions in psychological science” by Peter Kvam @peterkvam.bsky.social
mathpsych.org/presentation...
#iccmpsyched
mathpsych.org/presentation...
#iccmpsyched
June 16, 2024 at 8:43 PM
The 2nd talk in Measurement & Reasoning is “Revisiting the role operational definitions in psychological science” by Peter Kvam @peterkvam.bsky.social
mathpsych.org/presentation...
#iccmpsyched
mathpsych.org/presentation...
#iccmpsyched
How do we make choices when our options change over time? In a new paper with @lazyneuron.bsky.social
& Andy Fitch, just accepted at Psych Review, we explore "alternative-general" representations of evidence that allow us to make good decisions even when our options shift.
osf.io/preprints/ps...
& Andy Fitch, just accepted at Psych Review, we explore "alternative-general" representations of evidence that allow us to make good decisions even when our options shift.
osf.io/preprints/ps...
OSF
osf.io
June 12, 2024 at 7:57 PM
How do we make choices when our options change over time? In a new paper with @lazyneuron.bsky.social
& Andy Fitch, just accepted at Psych Review, we explore "alternative-general" representations of evidence that allow us to make good decisions even when our options shift.
osf.io/preprints/ps...
& Andy Fitch, just accepted at Psych Review, we explore "alternative-general" representations of evidence that allow us to make good decisions even when our options shift.
osf.io/preprints/ps...
Reposted by Peter Kvam
Reposted by Peter Kvam
Just got this in an email from UF admin. They like to do this on Friday afternoons so that we can enjoy our weekends.
March 1, 2024 at 7:02 PM
Just got this in an email from UF admin. They like to do this on Friday afternoons so that we can enjoy our weekends.
A short piece on what we do -- and more importantly, don't -- know about the relationship between human behavior and evolution. Plus, what approaches like computational evolution can tell us:
www.psychologytoday.com/us/blog/defi...
www.psychologytoday.com/us/blog/defi...
The New Science of Psychology and Evolution
Psychology and evolution have a difficult relationship, but AI may help mend it.
www.psychologytoday.com
December 13, 2023 at 10:09 PM
A short piece on what we do -- and more importantly, don't -- know about the relationship between human behavior and evolution. Plus, what approaches like computational evolution can tell us:
www.psychologytoday.com/us/blog/defi...
www.psychologytoday.com/us/blog/defi...
What is a scientific model?
www.psychologytoday.com/us/blog/defi...
Models bridge the gap between what we can understand and what we want to understand -- and extend that bridge in both directions. Now on the front page of Psychology Today!
psychologytoday.com/us
#PsychSciSky #scicomm #science
www.psychologytoday.com/us/blog/defi...
Models bridge the gap between what we can understand and what we want to understand -- and extend that bridge in both directions. Now on the front page of Psychology Today!
psychologytoday.com/us
#PsychSciSky #scicomm #science
What Is a Scientific Model?
Models help us simplify and understand the world around us.
www.psychologytoday.com
October 29, 2023 at 8:22 PM
What is a scientific model?
www.psychologytoday.com/us/blog/defi...
Models bridge the gap between what we can understand and what we want to understand -- and extend that bridge in both directions. Now on the front page of Psychology Today!
psychologytoday.com/us
#PsychSciSky #scicomm #science
www.psychologytoday.com/us/blog/defi...
Models bridge the gap between what we can understand and what we want to understand -- and extend that bridge in both directions. Now on the front page of Psychology Today!
psychologytoday.com/us
#PsychSciSky #scicomm #science
We often take them for granted, but operational definitions are a weird vestige of early 20th century science. It's time for psychology to leave them behind in favor of better measurement models:
Re-assessing the role of operational definitions in psychology
osf.io/preprints/ps...
(Reposted 🐦🦣🧵)
Re-assessing the role of operational definitions in psychology
osf.io/preprints/ps...
(Reposted 🐦🦣🧵)
osf.io
October 18, 2023 at 4:03 PM
We often take them for granted, but operational definitions are a weird vestige of early 20th century science. It's time for psychology to leave them behind in favor of better measurement models:
Re-assessing the role of operational definitions in psychology
osf.io/preprints/ps...
(Reposted 🐦🦣🧵)
Re-assessing the role of operational definitions in psychology
osf.io/preprints/ps...
(Reposted 🐦🦣🧵)