Hallgeir Sjåstad
@hallgeirsjastad.bsky.social
1.8K followers 530 following 130 posts
Professor of Psychology & Leadership at Norwegian School of Economics (NHH). I study decision-making, social life, and how people think about the future. Homepage: https://sites.google.com/view/hallgeir-sjastad/home
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Reposted by Hallgeir Sjåstad
jayvanbavel.bsky.social
Our new research finds that people are willing to cheat if it benefits their group — even when they gain nothing themselves.

"the risk of dishonesty in organizations is not limited to selfish acts...employees might bend rules to benefit their team or in-group members."
www.nhh.no/en/nhh-bulle...
We lie for those who are like us
Three experiments with more than 5,000 participants show that people are willing to cheat if it benefits their group — even when they gain nothing themselves.
www.nhh.no
Reposted by Hallgeir Sjåstad
hallgeirsjastad.bsky.social
Can the psychology of time help us understand climate change?

In collaboration with my excellent PhD student Simen Bø, we have a new pre-print exploring the temporal psychology of climate hesitancy, and whether it is possible to increase actual climate support by varying the *timing* of incentives.
hallgeirsjastad.bsky.social
For a quick introduction to this research, see the post below.

Full working paper/pre-print:
osf.io/preprints/ps...
hallgeirsjastad.bsky.social
Can the psychology of time help us understand climate change?

In collaboration with my excellent PhD student Simen Bø, we have a new pre-print exploring the temporal psychology of climate hesitancy, and whether it is possible to increase actual climate support by varying the *timing* of incentives.
hallgeirsjastad.bsky.social
Pre-print:
osf.io/preprints/ps...

Abstract and key figure summarizing the main effect across our three experiments: See below.

As always: Feedback is most welcome.
hallgeirsjastad.bsky.social
We have a new working paper, studying planning choices in the United States and Tanzania: "Just perfect days ahead?"

Documenting a robust best-case planning tendency, see below for details! Joint work with my last-year PhD student Simen Bø and Vincent Somville.
Reposted by Hallgeir Sjåstad
paolocrosetto.bsky.social
A *null* result I'm very proud of!

Led by Rustam Romaniuc, 35 coauthors from all over France tested nudge interventions to boost voter turnout.

None worked, and we are possibly not surprised -- but a well-powered null result *is* a result!

Paper:

kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
The main figure from the voter turnout paper -- no effect of any nudge intervention on voter turnout.
hallgeirsjastad.bsky.social
Abstract: See below.

Working paper/pre-print:
papers.ssrn.com/sol3/papers....

As always:
Feedback is most welcome!
hallgeirsjastad.bsky.social
In future work, we recommend that psychological research on sustainability & climate change should start paying more attention to actual behavior, including the long-term impact of system-level interventions.

For those interested:

Please see the abstract & link to our WP in the final post.
hallgeirsjastad.bsky.social
However, in combination, the social norm-nudge seemed to make the climate incentive more acceptable to the public:

We observed no drop in customer satisfaction in the combined condition, unlike the pure incentive condition.
hallgeirsjastad.bsky.social
Our study (with Mathias Ekström & Kjetil Bjorvatn) is based on a large-scale field experiment in Bergen, following about 2,000 households over two years.

We find a large effect of a small incentive on both the quantity (kg) & quality (correct sorting) of recycling, but no effect of the norm-nudge.
hallgeirsjastad.bsky.social
The Washington Post has written a new article about the modern underground waste system in Bergen (Norway), featuring our research on the effect of incentives vs. norm-nudges on actual recycling behavior.

www.washingtonpost.com/climate-solu...
Trash sucks: A Norwegian city uses vacuum tubes to whisk waste away
Bergen, Norway, has been building one of the world’s most advanced trash systems in its 955-year-old city center.
www.washingtonpost.com
hallgeirsjastad.bsky.social
Anxiety: What if something incredibly stupid goes wrong?

Curiosity: What will we find? What will the data look like? What can we learn from it? Will this be interesting for other people too? etc.
hallgeirsjastad.bsky.social
To me, a thing that never gets old:

The feeling you get when launching a top-priority large-scale data collection, designed to test ideas and hypotheses you have spent months and even years developing.

20% anxiety, 80% curiosity!
hallgeirsjastad.bsky.social
Even the weather played along! Spring in Bergen 🌞
hallgeirsjastad.bsky.social
For those interested in an overview:

1: Social media and morality: An updated review (Van Bavel, Robertson, del Rosario, Rasmussen & Rathje 2024).
www.annualreviews.org/content/jour...

2: The MAD Model of Moral Contagion (Brady, Crockett & Van Bavel, 2020).
pubmed.ncbi.nlm.nih.gov/32511060/
hallgeirsjastad.bsky.social
Today we had the great pleasure of welcoming back @jayvanbavel.bsky.social to NHH, who gave a seminar on social media and human morality!

Packed with interesting research questions, integrative ideas, the MAD model of moral contagion, and large-scale data from observational & experimental studies.
Reposted by Hallgeir Sjåstad
koenfucius.bsky.social
Incorrigible optimists, that’s what we are.

Research by @hallgeirsjastad.bsky.social et al finds that—even when we reflect on our past wellbeing levels and notice they’ve been steady—we believe in a brighter future for ourselves and our friends (but not for our enemies):

buff.ly/hSZBrxL
hallgeirsjastad.bsky.social
For those interested:

Some reflections below on the background, idea, and main findings.
hallgeirsjastad.bsky.social
Happy to share that we have a new paper on the causal effect of promises, just published in JEBO.

"Making a promise increases the moral cost of lying: Evidence from Norway and the United States."

Joint work w/ Mathias Eström, Kjetil Bjorvatn & Pablo Soto Mota.
www.sciencedirect.com/science/arti...
Reposted by Hallgeir Sjåstad
jayvanbavel.bsky.social
By focusing on substantive strategies and actionable guidance, rather than the flashiest new phrase, climate communicators may see greater success mobilizing the public.

It’s not about what we call it, but likely how we encourage people to tackle it. jayvanbavellab.substack.com/p/climate-te...
Climate Terminology Does Not Matter
Our new paper finds that swapping out one climate term for another does not meaningfully change people’s stated commitment to fight climate change
jayvanbavellab.substack.com
hallgeirsjastad.bsky.social
For those interested: A bit more about the background, general idea, and main findings below.
hallgeirsjastad.bsky.social
Our paper suggesting that people are "selective optimists" when predicting the future has now been published (EJSP).

Self-serving optimism in well-being prediction: People believe in a bright future for themselves and their friends, but not for their enemies.
onlinelibrary.wiley.com/doi/abs/10.1...
Reposted by Hallgeir Sjåstad
timothysnyder.bsky.social
Here is my best guidance for action, rendered beautifully by the great John Lithgow. I first published these lessons more than eight years ago, in late 2016. They open the twenty chapters of "On Tyranny: Twenty Lessons from the Twentieth Century."
snyder.substack.com/p/twenty-les...
Twenty Lessons, read by John Lithgow
Key selections from On Tyranny, for viewing and sharing
snyder.substack.com