Jens Rommel's Avatar

Jens Rommel

@jensrommel

Agricultural Economist at the Swedish University of Agricultural Sciences | Behavioral and Experimental Economics of Agriculture and the Environment | Posting mostly in English and German

1,549
Followers
3,189
Following
94
Posts
22.09.2023
Joined
Posts Following

Latest posts by Jens Rommel @jensrommel

Post image Post image Post image

Rechtzeitig zur #Landtagswahl: eine neue Version von „Immigration and Nationalism in the Long Run“
(mit schneiderst.de/)

-> Die historischen Erfahrungen mit Einwanderung wirken sich dort bis heute auf die Wahlergebnisse der #AfD aus. <-

papers.ssrn.com/sol3/papers....

07.03.2026 07:59 👍 62 🔁 21 💬 2 📌 1
Video thumbnail

The youth 😍

Fugazi - Waiting Room - Cleveland School of Rock

#punkrock #hardcore #posthardcore #fugazi #waitingroom #punkrockhistory

24.02.2026 04:29 👍 257 🔁 48 💬 8 📌 10
Post image

‘The Value of Robust Null Results in Agricultural Economics’

Very good and valuable initiative by the Journal of Agricultural Economics and the guest editors Laure Kuhfuss and @jensrommel.bsky.social to launch this special issue on such an important topic 👏

onlinelibrary.wiley.com/page/journal...

11.02.2026 06:15 👍 7 🔁 6 💬 0 📌 0
Redirecting

New paper on "Risk preferences and other (ignored) behavioral factors in fertilizer management decisions" with Laura Moritz, Riccardo Spada, @jensrommel.bsky.social, and Simone Cerroni

paper (english) 👉 doi.org/10.1016/j.so...

blog (italian) 👉 agrarpolitik-blog.com/2026/02/12/i...

12.02.2026 07:18 👍 6 🔁 3 💬 0 📌 0
Screenshot of title and abstract

Screenshot of title and abstract

New article: 'Risk preferences and other (ignored) behavioral factors in fertilizer management decisions: A systematic literature review'

doi.org/10.1016/j.so...

01.02.2026 06:04 👍 4 🔁 2 💬 0 📌 0
Preview
3rd EER Summer School Contact EER Summer School in Experimental and Behavioral Economics Address: ISEG Lisbon School of Economics and Management – Rua do Quelhas 6, 1200-781, Lisboa Email: eersummerschool@gmail.com

1/3 EER Summer School (Jun 1–4) in Experimental & Behavioral Economics
🗓Application: Jan 31, 2026 so hurry up!
🔗 www.eersummerschool.org
Please share & join us!

25.01.2026 11:49 👍 5 🔁 1 💬 0 📌 0
Preview
<em>Journal of Agricultural Economics</em> | Wiley Online Library Most research questions in agricultural and applied economics are causal in nature: they study how changes in one or more variables (such as policies, prices or weather) affect one or more other vari...

ICYMI: New paper on "Estimating Causal Effects With Observational Data: Guidelines for Agricultural and Applied Economists" with @arne-henningsen.bsky.social, Guy Low, @davidwuepper.bsky.social, Hugo Storm, Dagim Belay, and Stefan Hirsch

doi.org/10.1111/1477...

16.01.2026 13:00 👍 8 🔁 3 💬 0 📌 0

New parenting milestone unlocked: Discussing Kendrick Lamar Lyrics w the 16 y.o. 😊

16.01.2026 10:53 👍 1 🔁 0 💬 0 📌 0
The picture shows a screenshot of the abstract and title. Follow link for accessible version.

The picture shows a screenshot of the abstract and title. Follow link for accessible version.

In this article, we reflect on "farmer surveys" in three European countries. Exciting to be part of this meta-science exercise. We learned a lot about our surveys. Hopefully, others find this useful. Would not have been possible without the excellent lead of Thomas Slijper.

doi.org/10.1111/1477...

11.01.2026 11:55 👍 7 🔁 3 💬 0 📌 0
Book cover of Annika Norlin’s “Colony”

Book cover of Annika Norlin’s “Colony”

Just finished Annika Norlin’s “Colony.” It’s a captivating story about a journalist with burn-out who goes into the woods and encounters a strange commune of outsiders. Very fun to learn about all of their backstories and figure out what happened 🧩

07.01.2026 07:11 👍 9 🔁 1 💬 3 📌 0
Preview
Juli Zeh über Nachbarn, die AfD wählen: „Ich bin nicht der Heldinnen-Typ“ Viel wird geredet über die, die für die AfD stimmen, Schriftstellerin Juli Zeh lebt mit ihnen im Dorf. Ein Gespräch über Rechtspopulisten, Talkshows und durchtanzte Nächte.

Juli Zeh erklärt wieder, dass ihre Nachbarn keine Rechtsextremen sind. Und dass ist halt mal wieder vollkommen vorbei am Thema. Es ist nämlich total egal, ob die rechtsextrem sind oder nicht oder ob sie eigentlich die Demokratie gut finden, wenn sie mehrheitlich (51,x%) eine Partei wählen, die 1/7

27.12.2025 18:34 👍 2004 🔁 569 💬 91 📌 40

📣Interested in investigating whether/how land users consider soil biodiversity🪱 in their management decisions & what consequences this have for designing incentives? While being part of an interdisciplinary research training group? Apply here⬇️

recruitingapp-5128.de.umantis.com/Vacancies/33...

17.12.2025 14:45 👍 12 🔁 14 💬 0 📌 4
Advancing Agri-Environmental Policy with Behavioral and Experimental Economics: Insights, Innovations, and Future Directions 

In recent years, behavioral and experimental economics have increasingly shaped agrienvironmental research by revealing how farmers navigate complex decisions. This article reviews key developments in three areas: behavioral insights into farmers’ social, temporal, and risk preferences and identities, norms, and motivations; experimental methods for assessing behavior and policy impacts; and methodological advances enhancing scientific rigor. We highlight contributions to more behaviorally informed agri-environmental policies, including nudges, participatory approaches, and innovative schemes. Looking forward, priorities include large-scale collaborative studies, stronger stakeholder involvement, and integrating behavioral evidence into policymaking, addressing challenges such as farmer fatigue, to design adaptive, effective, and legitimate policies.

Copyright: JARE

Advancing Agri-Environmental Policy with Behavioral and Experimental Economics: Insights, Innovations, and Future Directions In recent years, behavioral and experimental economics have increasingly shaped agrienvironmental research by revealing how farmers navigate complex decisions. This article reviews key developments in three areas: behavioral insights into farmers’ social, temporal, and risk preferences and identities, norms, and motivations; experimental methods for assessing behavior and policy impacts; and methodological advances enhancing scientific rigor. We highlight contributions to more behaviorally informed agri-environmental policies, including nudges, participatory approaches, and innovative schemes. Looking forward, priorities include large-scale collaborative studies, stronger stakeholder involvement, and integrating behavioral evidence into policymaking, addressing challenges such as farmer fatigue, to design adaptive, effective, and legitimate policies. Copyright: JARE

New paper in the #JARE 📄 🥳

To celebrate 50 years of the Journal of #Agricultural and #Resource #Economics, we contributed our paper "Advancing Agri-Environmental Policy with Behavioral and Experimental Economics: Insights, Innovations, and Future Directions" to the latest special issue. 1/4

11.12.2025 10:14 👍 17 🔁 12 💬 1 📌 1
Post image Post image

A thread of directed acyclic graphs (DAGs) that look like record covers... because that's EXACTLY what the world needs

1. Huey Lewis and the News: link.springer.com/chapter/10.1...

28.11.2025 11:30 👍 171 🔁 64 💬 9 📌 8

New substack post by @shonferguson.bsky.social on how to choose Master program in Ag Econ

shonferguson.substack.com/p/thinking-a...

24.11.2025 14:34 👍 1 🔁 1 💬 0 📌 0

Please replicate this in Berlin:

www.nature.com/articles/s44...

Judging from people's reaction to the pony and ample personal experience with all kinds of events on Berlin public transport, I predict a null result:

www.youtube.com/watch?v=O9Nv...

24.11.2025 10:41 👍 1 🔁 0 💬 1 📌 0

@sentimentbot.bsky.social

23.11.2025 16:45 👍 0 🔁 0 💬 1 📌 0
Post image

Extreme weather events can be costly for German farmers, in terms of yield losses and farm efficiency 💸
Here is our most recent publication: doi.org/10.1093/erae... by @moritzhartig.bsky.social, Silke Hüttel & @stefanseifert.bsky.social

@agrarunigoe.bsky.social @crc1502-detect.bsky.social

12.11.2025 07:50 👍 15 🔁 9 💬 0 📌 1

2025 Gorilla update 👋🦍: One student found the gorilla this time around (see details in thread below). BUT, I have an AI-related update that is too good not to share ... #EconSky 📉📈

30.10.2025 13:51 👍 8 🔁 4 💬 3 📌 0
A "methods primer" article in the journal "BMJ Medicine", titled "Factors associated with: problems of using exploratory multivariable regression to identify causal risk factors"

A "methods primer" article in the journal "BMJ Medicine", titled "Factors associated with: problems of using exploratory multivariable regression to identify causal risk factors"

We wrote an article explaining why you shouldn't put several variables into a regression model and report which are statistically significant - even as exploratory research. bmjmedicine.bmj.com/content/4/1/.... How did we do?

27.10.2025 17:39 👍 273 🔁 108 💬 26 📌 20
Screenshot of abstract and title, follow link for text access

Screenshot of abstract and title, follow link for text access

Super-cool new paper, using an RCT to estimate the impact of information framing on eco scheme uptake: doi.org/10.1186/s401...

27.10.2025 18:45 👍 5 🔁 2 💬 0 📌 0
Title and abstract screenshot from paper; follow link for text

Title and abstract screenshot from paper; follow link for text

In a new article, we study acceptance of methane-reducing feed additives among Swedish dairy farmers; acceptance is high overall (low willingness-to-accept), i.e., feed additives are a cost-effective GHG mitigation measure in Sweden doi.org/10.1093/erae...

27.10.2025 16:39 👍 10 🔁 5 💬 0 📌 1
Abstract and title; follow link for text

Abstract and title; follow link for text

In a new article, we test different behavioral interventions (and combinations) in four EU countries. Null results on "light green" eco-schemes.

doi.org/10.1093/erae...

25.10.2025 12:58 👍 5 🔁 3 💬 0 📌 1
Q Open Paper: Validating Mouse Tracking in economic research

Q Open Paper: Validating Mouse Tracking in economic research

Cool methodological, new paper in #mousetracking in #econ research. #QOpen #agecon #DCE

Mouse tracking in a DCE can be a useful and valid tool 🔧 to uncover Hidden decision-processes without interfering with respondents decisionmaking. 💡

23.10.2025 22:51 👍 7 🔁 1 💬 2 📌 0
Abstract
We investigate a phenomenon which we have experienced as common when dealing
with an assortment of Italian public and private institutions: people promise to exchange
high-quality goods and services, but then something goes wrong and the quality delivered
is lower than had been promised. While this is perceived as ‘cheating’ by outsiders,
insiders seem not only to adapt to, but to rely on this outcome. They do not resent
low-quality exchanges; in fact, they seem to resent high-quality ones, and are inclined
to put pressure on or avoid dealing with agents who deliver high quality. The equilibrium
among low-quality producers relies on an unusual preference ranking which differs from
that associated with the Prisoners’ Dilemma and similar games, whereby self-interested
rational agents prefer to dish out low quality in exchange for high quality. While equally
‘lazy’, agents in our low-quality worlds are oddly ‘pro-social’: for the advantage of
maximizing their raw self-interest, they prefer to receive low-quality goods and services,
provided that they too can in exchange deliver low quality without embarrassment. They
develop a set of oblique social norms to sustain their preferred equilibrium when threatened by the intrusion of high quality. We argue that high-quality collective outcomes are
endangered not only by self-interested individual defectors, but by ‘cartels’ of mutually
satisfied mediocrities.

Abstract We investigate a phenomenon which we have experienced as common when dealing with an assortment of Italian public and private institutions: people promise to exchange high-quality goods and services, but then something goes wrong and the quality delivered is lower than had been promised. While this is perceived as ‘cheating’ by outsiders, insiders seem not only to adapt to, but to rely on this outcome. They do not resent low-quality exchanges; in fact, they seem to resent high-quality ones, and are inclined to put pressure on or avoid dealing with agents who deliver high quality. The equilibrium among low-quality producers relies on an unusual preference ranking which differs from that associated with the Prisoners’ Dilemma and similar games, whereby self-interested rational agents prefer to dish out low quality in exchange for high quality. While equally ‘lazy’, agents in our low-quality worlds are oddly ‘pro-social’: for the advantage of maximizing their raw self-interest, they prefer to receive low-quality goods and services, provided that they too can in exchange deliver low quality without embarrassment. They develop a set of oblique social norms to sustain their preferred equilibrium when threatened by the intrusion of high quality. We argue that high-quality collective outcomes are endangered not only by self-interested individual defectors, but by ‘cartels’ of mutually satisfied mediocrities.

Gambetta & Origgi on the LL Game, in which agents prefer to deliver and receive (!) low quality.

This paper is absolutely savage but also feels uncomfortably relevant to parts of academia outside of Italy 👀

diegogambetta.org/wp-content/u...

16.10.2025 14:08 👍 122 🔁 30 💬 5 📌 12
Call For Papers: Journal of Business Economics - Special Issue - Behavioral Ethics Under Review: Replications and Theoretical Foundations - Society for Business Ethics Call for Regular Articles & Registered Reports Special Issue on “Behavioral Ethics Under Review: Replications and Theoretical Foundations” The Journal of Business Economics is currently receiving…

Call For Papers: Journal of Business Economics – Special Issue – Behavioral Ethics Under Review: Replications and Theoretical Foundations

Call for Regular Articles & Registered Reports

sbeonline.org/2025/10/call...

15.10.2025 04:53 👍 6 🔁 4 💬 0 📌 0
Preview
2 Wissenschaftliche/r Mitarbeiter/in (m/w/d) - Agrarökonomie

Job Alert for PhDs in #Agricultural #Economics 🚨

2 Positions open for PhD-Researchers at the Chair of Agricultural Economics at the University of Rostock with @sebastianlakner.bsky.social . Positions are for German-speaking individuals including teaching activities.

13.10.2025 14:32 👍 6 🔁 8 💬 1 📌 1
Preview
Simulate Data from a DAG and Associated Node Information Simulate complex data from a given directed acyclic graph and information about each individual node. Root nodes are simply sampled from the specified distribution. Child Nodes are simulated according...

I'm starting to explore {simDAG}, a nifty #rstats package that has a nice API for specifying DAGs and then simulating data from them: robindenz1.github.io/simDAG/

13.10.2025 16:14 👍 77 🔁 18 💬 3 📌 4
Redirecting

📢 New publication 🚨🚨🚨

I am happy to share a new publication (open access) regarding farmers' intentions to adopt a DSS, combined with data from meteorological stations, for pest management: doi.org/10.1016/j.at...

Grateful to my amazing co-authors

#agriecon

12.10.2025 10:35 👍 0 🔁 1 💬 0 📌 0

Welcome to Editorial Express

12.10.2025 13:23 👍 5 🔁 1 💬 0 📌 0