Assistant Professor in OB at the University of Groningen | psychology of leadership, sustainability, and misperceptions | #rstats | he/they | 🇺🇸→🇳🇱
Groningen, Nederland
Joined April 2011
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This is my last post ever on this site
This place used to feel like a community of peers, but for (hopefully obvious) reasons it's time to abandon this sinking ship
You can find me at the username 'Leesplez' on blue sky
Jeff Lees (@leesplez.bsky.social) retweeted
In summer 2023, Harvard Business School suspended a star professor, Francesca Gino, over charges of research misconduct.
By coincidence, one of her affected papers also had some funny-looking data from a *different* B-school superstar, Dan Ariely... (1/3)
Jeff Lees (@leesplez.bsky.social) retweeted
A large study, with 3774 participants across 24 labs and 6 countries, did not replicate the finding that making status motives salient increases pro-environmental behavior. @CREP_psych
osf.io/preprints/psyarxiv/sf…
Jeff Lees (@leesplez.bsky.social) retweeted
People often claim scientists’ ethical or political endorsements undermine scientific integrity, but is that true?
Actually, “the value-free ideal (VFI) — a traditional conception of objectivity — [was] not correlated with generalized trust in #science".
doi.org/10.31235/osf.io/ks2t…
ALT The objectivity (value free ideal) items
ALT Results (Figure 4)
Jeff Lees (@leesplez.bsky.social) retweeted
Very happy to share that our work is now published in PNAS (@PNASNews)! 🎉 It's a systematic look into how demographic and psychological factors are associated with misinformation susceptibility. @arc_mpib
Thread below and can be read in full here: pnas.org/doi/10.1073/pnas.24…
Who falls for online misinformation? A meta-analysis on demographic and psychological factors impacting misinformation susceptibility.
Preprint: osf.io/preprints/psyarxiv/7u…
My lovely coauthors: @AlanTump, Nina Ehmann, @lorenz_spreen, Ralph Hertwig, Anton Gollwitzer, @RalfKurvers 1/n
Jeff Lees (@leesplez.bsky.social) retweeted
Apply to the EASP Summer School at Kent University--I'll be give a guest lecture!
It features 6 classes:
-Conspiracies & Misinformation
-Moral Psychology & AI
-Social Identity & Extremism
-Human-Animal Relations
-Political Cognition
-Close Relationships
easp.eu/news/itm/easp_summer…
Jeff Lees (@leesplez.bsky.social) retweeted
PhD student and postdoc friends! I'm conducting a paid 5-10 minute online survey on experiences receiving feedback in academia. Have a few minutes to spare? I'd LOVE to hear from you. 👋🏼😊
hbs.qualtrics.com/jfe/form/S…
Jeff Lees (@leesplez.bsky.social) retweeted
In our new @PNASNews paper, across 21 experiments with 23,000+ participants, we identify a critical distortion that shapes decisions involving tradeoffs: we find that people systematically overweight quantified information in such decisions. Paper: pnas.org/doi/10.1073/pnas.24… 🧵
I'm mostly gonna be on BlueSky for the foreseeable future [at]leesplez.bsky.social
Jeff Lees (@leesplez.bsky.social) retweeted
Applications are now open for the EASP 2025 Summer School 👇easp.eu/news/itm/easp_summer…
Jeff Lees (@leesplez.bsky.social) retweeted
Hi all! Maryam Kouchaki and I will be recruiting a shared lab manager through Kellogg's Behavioral Research Fellow program. Please apply and forward to interested RAs who are interested in pursuing PhDs.
More info here: kellogg.northwestern.edu/aca…
Jeff Lees (@leesplez.bsky.social) retweeted
In a remarkable new study, Simine Vizier (@siminevazire), Sarah Schiavone (@SchiavoneSays), and Mijke Rhemtulla (@mijkenijk) surveyed 724 personality/social psychology researchers to investigate what they think of their own field. First, the good news:
🧵
Jeff Lees (@leesplez.bsky.social) retweeted
So many people confuse LLMs (or genAI, in general) for models of human cognition, language, learning, etc., so I thought it may be useful to share once more my brief comment, titled "Psychological models and their distractors". (open access link: rdcu.be/cGQpY) 🧵
Jeff Lees (@leesplez.bsky.social) retweeted
🧵 spain has some of europe's best neighbourhood-level income data, but it's buried in the statistical office website
i scraped and structured the data to make it accessible with one line of code
check out my new R package:
pablogguz.github.io/ineAtlas…
Jeff Lees (@leesplez.bsky.social) retweeted
If you had to pick *1* measure of racial attitudes to predict white Americans' Trump support, we find opposition to anti-racism (agreement w/ statements like "People these days can’t speak their minds without someone accusing them of racism") is most correlated
xitter.cf/RachelWetts/status/159…
🚨New WP!🚨
"Antiracism and its Discontents: The Prevalence and Political Influence of Opposition to Antiracism among White Americans" w/ @RobbWiller
We find opposition to antiracism is a widespread ideology profoundly shaping US racial politics 🧵
osf.io/preprints/socarxiv/xv…
I need an #rstats sanity check for a #psychology study I'm running...just need to make sure I'm specifying the mixed-effects model correctly
All input is welcome, will explain in the next tweet...
So would this be the right mixed-model (lmer) specification:
Model 1: DV ~ Time * Condition + (1 | Subject)
Or should it be this:
Model 2: DV ~ Time * Condition + (1 + Time | Subject)...
