Joris Frese
@fresejoris.bsky.social
PhD candidate in political science at the EUI [On the 25/26 job market].
Currently visiting Harvard's Department of Government.
Interested in: political behavior, quantitative methods, metascience.
https://www.jorisfrese.com/
Currently visiting Harvard's Department of Government.
Interested in: political behavior, quantitative methods, metascience.
https://www.jorisfrese.com/
Pinned
Joris Frese
@fresejoris.bsky.social
· May 21
🇪🇺🇦🇫 Published Today in CPS 🇪🇺🇦🇫
“Stand by those who share our values” – how refugees fleeing the Taliban improved European attitudes toward immigration
Article: journals.sagepub.com/doi/10.1177/...
Pre-print: osf.io/preprints/os...
Thread: 1/8
“Stand by those who share our values” – how refugees fleeing the Taliban improved European attitudes toward immigration
Article: journals.sagepub.com/doi/10.1177/...
Pre-print: osf.io/preprints/os...
Thread: 1/8
Reposted by Joris Frese
I keep posting these images because they get at a really deep problem - the class divide in political participation.
Those who want our democracy to truly represent all its citizens need to create and sustain real connections with people and communities who do not currently feel represented.
Those who want our democracy to truly represent all its citizens need to create and sustain real connections with people and communities who do not currently feel represented.
February 4, 2026 at 6:34 PM
I keep posting these images because they get at a really deep problem - the class divide in political participation.
Those who want our democracy to truly represent all its citizens need to create and sustain real connections with people and communities who do not currently feel represented.
Those who want our democracy to truly represent all its citizens need to create and sustain real connections with people and communities who do not currently feel represented.
Reposted by Joris Frese
My colleague Kevin Munger asked me and a bunch of editors to sit and think through AI and peer review. Our take:
osf.io/9sxnc/files/...
We envision an increased (!) involvement of humans in the evaluation of social science.
osf.io/9sxnc/files/...
We envision an increased (!) involvement of humans in the evaluation of social science.
January 28, 2026 at 9:59 PM
My colleague Kevin Munger asked me and a bunch of editors to sit and think through AI and peer review. Our take:
osf.io/9sxnc/files/...
We envision an increased (!) involvement of humans in the evaluation of social science.
osf.io/9sxnc/files/...
We envision an increased (!) involvement of humans in the evaluation of social science.
Reposted by Joris Frese
🌍🇺🇸 Published Today in PNAS Nexus 🌍🇺🇸
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
January 27, 2026 at 8:01 PM
🌍🇺🇸 Published Today in PNAS Nexus 🌍🇺🇸
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
Reposted by Joris Frese
🎺 Call for proposals 🎺
1️⃣ replicate an existing experiment
2️⃣ run a novel experiment
on repdata.com
3️⃣ coauthor with Mary McGrath and me to meta-analyze the replications and existing studies
4️⃣ publish your study
details: alexandercoppock.com/replication_...
applications open Feb 1
please repost!
1️⃣ replicate an existing experiment
2️⃣ run a novel experiment
on repdata.com
3️⃣ coauthor with Mary McGrath and me to meta-analyze the replications and existing studies
4️⃣ publish your study
details: alexandercoppock.com/replication_...
applications open Feb 1
please repost!
January 27, 2026 at 10:16 PM
🎺 Call for proposals 🎺
1️⃣ replicate an existing experiment
2️⃣ run a novel experiment
on repdata.com
3️⃣ coauthor with Mary McGrath and me to meta-analyze the replications and existing studies
4️⃣ publish your study
details: alexandercoppock.com/replication_...
applications open Feb 1
please repost!
1️⃣ replicate an existing experiment
2️⃣ run a novel experiment
on repdata.com
3️⃣ coauthor with Mary McGrath and me to meta-analyze the replications and existing studies
4️⃣ publish your study
details: alexandercoppock.com/replication_...
applications open Feb 1
please repost!
This tracks well with heterogeneity analyses from a study with @miriamsorace.bsky.social, Tom Robinson & @simonhix.bsky.social: there, those who were less supportive of climate action to begin with were also less persuaded by nano-targeted climate policy proposals. 11/11
bsky.app/profile/miri...
bsky.app/profile/miri...
January 27, 2026 at 8:01 PM
This tracks well with heterogeneity analyses from a study with @miriamsorace.bsky.social, Tom Robinson & @simonhix.bsky.social: there, those who were less supportive of climate action to begin with were also less persuaded by nano-targeted climate policy proposals. 11/11
bsky.app/profile/miri...
bsky.app/profile/miri...
Overall, I was impressed with how effective many of these quite simple and brief interventions were at inducing behavioral change. Based on partisan heterogeneity, they won’t help recruit skeptics into the broader climate-mitigation coalition but rather mobilize those who are already in it. 10/11
January 27, 2026 at 8:01 PM
Overall, I was impressed with how effective many of these quite simple and brief interventions were at inducing behavioral change. Based on partisan heterogeneity, they won’t help recruit skeptics into the broader climate-mitigation coalition but rather mobilize those who are already in it. 10/11
Heterogeneity across many other dimensions can be further explored in this interactive web tool: climate-advocacy-megastudy-0f5581d24099.herokuapp.com 9/11
January 27, 2026 at 8:01 PM
Heterogeneity across many other dimensions can be further explored in this interactive web tool: climate-advocacy-megastudy-0f5581d24099.herokuapp.com 9/11
However, there is strong heterogeneity by partisanship/ideology in how receptive people are to such behavioral interventions. Democrats (who are already greener on average) responded positively to many interventions, while Republicans were not receptive whatsoever. 8/11
January 27, 2026 at 8:01 PM
However, there is strong heterogeneity by partisanship/ideology in how receptive people are to such behavioral interventions. Democrats (who are already greener on average) responded positively to many interventions, while Republicans were not receptive whatsoever. 8/11
Furthermore, these positive effects also translate into directly verifiable behaviors for many of these interventions, such as donation behavior which was measured directly, beyond just self-reports. 7/11
January 27, 2026 at 8:01 PM
Furthermore, these positive effects also translate into directly verifiable behaviors for many of these interventions, such as donation behavior which was measured directly, beyond just self-reports. 7/11
… political advocacy (sign petitions, write letters to representatives), and personal lifestyle changes (eat less meat, fly less). Across most outcomes, many of the interventions significantly increased pro-climate behaviors compared to the control condition. 6/11
January 27, 2026 at 8:01 PM
… political advocacy (sign petitions, write letters to representatives), and personal lifestyle changes (eat less meat, fly less). Across most outcomes, many of the interventions significantly increased pro-climate behaviors compared to the control condition. 6/11
Each respondent was randomly exposed to one intervention. Afterwards, self-reported behavioral measures were surveyed, related to the willingness to participate in public advocacy (eg share newsletters or videos), financial advocacy (switch to a green bank or make donations), 5/11
January 27, 2026 at 8:01 PM
Each respondent was randomly exposed to one intervention. Afterwards, self-reported behavioral measures were surveyed, related to the willingness to participate in public advocacy (eg share newsletters or videos), financial advocacy (switch to a green bank or make donations), 5/11
The most promising interventions were experimentally tested on a quota-matched sample of 31000 US respondents and compared to a control condition with no intervention and an established intervention known to induce attitudinal change. 4/11
January 27, 2026 at 8:01 PM
The most promising interventions were experimentally tested on a quota-matched sample of 31000 US respondents and compared to a control condition with no intervention and an established intervention known to induce attitudinal change. 4/11
For example, my team designed an interactive quiz intended to correct misperceptions about climate risks. Based on expert evaluations, this was actually predicted to be the most effective intervention. How did this work out in practice? 3/11
January 27, 2026 at 8:01 PM
For example, my team designed an interactive quiz intended to correct misperceptions about climate risks. Based on expert evaluations, this was actually predicted to be the most effective intervention. How did this work out in practice? 3/11
Teams of social and behavioral scientists were tasked with designing brief, scalable interventions intended to increase public, political, and financial climate advocacy. What can we share with study participants in less than 5 minutes to induce the most positive behavioral changes? 2/11
January 27, 2026 at 8:01 PM
Teams of social and behavioral scientists were tasked with designing brief, scalable interventions intended to increase public, political, and financial climate advocacy. What can we share with study participants in less than 5 minutes to induce the most positive behavioral changes? 2/11
🌍🇺🇸 Published Today in PNAS Nexus 🌍🇺🇸
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
January 27, 2026 at 8:01 PM
🌍🇺🇸 Published Today in PNAS Nexus 🌍🇺🇸
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
How can we foster collective climate action?
- led by @dgoldwert.bsky.social, @smconstantino.bsky.social & @madalina.bsky.social
- 17 behavioral interventions, designed by 50 experts
- tested on >30000 US participants
academic.oup.com/pnasnexus/ar... 🧵 1/11
Reposted by Joris Frese
Fascinating / dark paper: www.nber.org/papers/w34747
A Few Bad Apples? Academic Dishonesty, Political Selection, and Institutional Performance in China
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
www.nber.org
January 26, 2026 at 8:47 PM
Fascinating / dark paper: www.nber.org/papers/w34747
Reposted by Joris Frese
Reposted by Joris Frese
NEW PAPER ALERT! My paper, with @bjornhoyland.bsky.social , on how “policy loss” shapes support for the EU has just been published in @cpsjournal.bsky.social. Check it out!
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January 26, 2026 at 3:12 PM
NEW PAPER ALERT! My paper, with @bjornhoyland.bsky.social , on how “policy loss” shapes support for the EU has just been published in @cpsjournal.bsky.social. Check it out!
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1/
Reposted by Joris Frese
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
regcheck.app
January 22, 2026 at 11:05 AM
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
Reposted by Joris Frese
As the Spring semester kicks off, just a reminder that I have collected over 100 datasets that could be of use to undergrads/grads doing their first quant research projects!
sites.google.com/view/drjosep...
sites.google.com/view/drjosep...
Dr. Joseph A. Coll - Political Science Datasets
Introducing the Dataset of Political Science Datasets (DPSD, v1.2)!
This dataset includes information on 100+ datasets, mostly focused on political science but of relevance to related fields (e.g., e...
sites.google.com
January 20, 2026 at 5:33 PM
As the Spring semester kicks off, just a reminder that I have collected over 100 datasets that could be of use to undergrads/grads doing their first quant research projects!
sites.google.com/view/drjosep...
sites.google.com/view/drjosep...
Reposted by Joris Frese
Over 96% of these clearly opposite item pairs are positively correlated on MTurk. In other words, many respondents give similar answers to statements that literally contradict each other.
January 8, 2026 at 8:48 PM
Over 96% of these clearly opposite item pairs are positively correlated on MTurk. In other words, many respondents give similar answers to statements that literally contradict each other.
Reposted by Joris Frese
We're excited to release version 1.0 of the Dynamic Democracy website. It includes updated data on state policy, public opinion, mass ideology, and representation. The website enables you to see how these measures are changing overtime across states and within states.
www.dynamicdemocracy.us
www.dynamicdemocracy.us
January 6, 2026 at 8:58 PM
We're excited to release version 1.0 of the Dynamic Democracy website. It includes updated data on state policy, public opinion, mass ideology, and representation. The website enables you to see how these measures are changing overtime across states and within states.
www.dynamicdemocracy.us
www.dynamicdemocracy.us
Super cool (free) resource.
112 Trump voters vs. 1243 Harris voters in my neighborhood ⬇️
112 Trump voters vs. 1243 Harris voters in my neighborhood ⬇️
January 6, 2026 at 7:50 PM
Super cool (free) resource.
112 Trump voters vs. 1243 Harris voters in my neighborhood ⬇️
112 Trump voters vs. 1243 Harris voters in my neighborhood ⬇️