Joris Frese
banner
fresejoris.bsky.social
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/
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...
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
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
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
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
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
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
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
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
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
January 27, 2026 at 8:01 PM
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
Thank you! It's a short one, so it wont take up too much of your busy schedule as the new HoD 😉
December 20, 2025 at 10:17 PM