Michael P. Grosz

I'm excited to share that my paper "Why the Big Five Personality Traits Are Composites, Not Common Causes" has just been accepted at Psychological Review. The preprint is available on PsyArXiv: osf.io/preprints/psya…

Do punishers of freeriders get admiration from peers? Depends a lot on the peers. In small groups (N=667 lab study), punishers received higher status from peers high in right-wing authoritarianism, but not by peers low in RWA. Full paper (open access): journals.sagepub.com/doi/10.1177/01…

Which Machiavellianism scale should we use? We psychometrically compared the TDMS, FFMI-SSF, MAAQ, M4, M7, and SD4. Spoiler: the M4 came out on top overall. And yes, I developed the M4. Make of that what you will.😅 The preprint is available on osf.io/preprints/psya…

Meine Uni, die HMU, hat mehrere W3 Professuren für den neuen Standort in München ausgeschrieben: ✅ Quantitative Methoden ✅ Allgemeine Psychologie ✅ Entwicklungspsychologie ✅ 2 x Klinische Psychologie …th-and-medical-university-muenchen.de/ueber-uns/karr… 🔄 Bitte teilen & retweeten!

Did you know that PHYSICAL STRENGTH is an important calibrator of behavioral strategies, attitudes, & psych disorders?  Because: how 💪 a person is has massive effects on the cost-benefit calculus of decision-making across a range of social domains.  🧵 re: strength & personality 1/13

@ukuv @CollabraOA @ucpress Thanks. Yeah @rauthmann & Will (2011) analyzed the Machiavellianism literature and proposed a multifaceted Mach construct structured along the ABCD — which served as the foundation for our work.

@MP_Grosz @CollabraOA @ucpress Cool idea to ensure the ABCD of a construct is covered. I have not seen this before#

Machiavellianism scales often miss key facets across affect, behavior, cognition, and desire. Our new study introduces the M4 scale, built with Ant Colony Optimization to capture Mach more comprehensively—and it predicts cheating better than other measures. (1/2)

@LokalHabanero Well we tried to keep the method sections concise 😅

@MP_Grosz cool, will read... probably a world record for longest table note at table 2!

I just became president of a scientific society and my first act was to disagree with one of my heroes...Arie Kruglanski gave a keynote arguing social psychology needs MORE Big Beautiful Theories. I think that's exactly backwards. Here's why...

Our paper about the GIPO data has now been officially published at Personality Science: journals.sagepub.com/doi/10.1177/27…

🔪"The fundamental irony, inherent in the human predicament, is that morality is itself both an occasion and instrument for many of the most severe and cruel forms of immorality." aeon.co/essays/how-the…

@pdh_ponderings Thanks 😊

@MP_Grosz Nicely done!

❗️NEW PAPER❗️ We developed the M4, a reliable & valid Machiavellianism scale capturing affective, behavioral, cognitive, and motivational aspects of Mach. Link: osf.io/preprints/psya…

@jan_eeckhout Thinking of doing research in Europe? The ERC Advanced Grant competition could be your way in - wherever you're from. You can request extra funding to cover lab setup, access to large facilities, personnel costs and more. 👇👇👇 erc.europa.eu/apply-grant/ad…

Working link to accepted manuscript: osf.io/preprints/psya…

📊 NEW PAPER 📊 Our manuscript about the GIPO dataset (N = 1,460) is now accepted at Personality Science! 🎉 The freely available dataset includes measures of personality and prosocial & cheating behavior. You can find the accepted manuscript here: osf.io/preprints/ps...

The Universities of the Netherlands (UNL) have presented a “self-regulation plan” to the Dutch Minister of Education. In essence, this plan means that the Boards of Directors of Dutch universities will abolish international Bachelor’s programs in psychology.

"we explore the … issue of unmeasured confounding … and introduce psychologists to the E-value" Bi et al. (in press). Navigating Unmeasured Confounding in Nonexperimental Psychological Research: A Practical Guide to Computing and Interpreting E-Value doi.org/10.1177/251524…

The Well-Being and Morality Lab is hiring a 1-year post-bacc starting in July/August 2025 to conduct research on social interactions and well-being! Please spread the word. I will do an initial review of applications on April 25. wustl.wd1.myworkdayjobs.com/en-US/External…