Diego Guevara Beltran

New study just out! 🚨 We created a way to rewind and fast forward through cultural differences in China.
www.nature.com/articles/s41... @natureportfolio.nature.com

Many mammals will also eat the placenta, so for many it is womb food

Interdependence strongly guides partner choice, giving help, and getting help from people in your network #EPatSPSP2026 @spspnews.bsky.social

@psycheddiego.bsky.social talks to us about cooperation and interdependence in the Mayangna

I don’t read that as a criticism of deriving hypothesis from an evolutionary perspective per se but more as a criticism of a) over-reliance on self-reports over behavior; b) lack of diverse perspectives among those making predictions

Do Great Apes Know Each Other's Names? Probing Great Ape Comprehension of Social Vocal Labels — Animal Behavior and Cognition

New article out exploring great ape name recognition! We find partial evidence that zoo-living chimps & bonobos know each other's names 👀 Huge thanks to Animal Behavior and Cognition (a great open-access journal) & co-authors for your collaboration!🎉🐵

unsvr1.com/web/abc/work...

How do people decide whom to help when cooperation is costly and resources are limited?

Kinship and reciprocity are not the full story—research by @psycheddiego.bsky.social et al suggests shared fate (the other person’s outcomes influences one’s own) complements:

buff.ly/fRinBjR

Introducing PowerLMM.js!

A new tool for power analysis of longitudinal linear mixed-effects models (LMMs) – with support for missing data, plus non-inferiority and equivalence tests.

powerlmmjs.rpsychologist.com

Would really appreciate your feedback as I refine this app! Details below 🧵👇

As we head toward #SAS2026 we are excited to partner with @inclivio.com to support EMA research in affective science.
If you’re attending the conference, like (1 entry) and repost (3 entries) this post to enter a drawing for 1 of 3 licenses to run your study on Inclivio for *free*.
inclivio.com

Updated application portal is now live! arizona.csod.com/samldefault....

Our partnership with the @inclivio.com continues as we get closer to #SAS2026.
Inclivio provides EMA researchers with tools that make data collection easier and more participant friendly.
Like (1 pt) and repost (3 pts) to enter a drawing for free access to Inclivio!
inclivio.com

In our new American Psychologist paper, we debunk the decades old zombie idea that evolutionary psychology is unfalsifiable.

🧵

Very happy to see our ice-fishing paper on the cover of @science.org this week! 🎣🎉

We tracked large groups of Finnish competitive ice-fishers to study how social foragers use social information when searching for resources. 🐟

Link: www.science.org/doi/10.1126/... (contact me for open access)

a cartoon drawing of a pokemon with a plant growing out of its mouth Alt: A gif showing the 3 starter Pokémon dancing: squirtle, charmander, bulbasur

I gave my undergrad RA 3 research ideas to pick from and said this is like picking his starter Pokémon. He asked me where’s Pikachu 😂 Pikachu is a self-generated idea!

Preferred qualifications:
-Strong skills in statistics (e.g., SEM, multi-level models, longitudinal data, social networks)
-Data visualization
-Knowledgeable in the science of cooperation/prosocial behavior, the evolutionary human sciences, and/or affective science

Minimum qualifications:
-PhD in psychology, anthropology, or related field
- Fluent in Spanish (for fieldwork)
- Willingness to conduct fieldwork in a remote area (i.e., no basic services like water, sewage, electricity, etc.)

Key responsibilities/activities:
-Analyze data on cooperation and well-being among the Mayangna of Nicaragua
-Design/implement new collaborative projects
-Conduct fieldwork in the Bosawas biosphere reserve of Nicaragua
-Collaborate on ongoing projects
-Gain mentorship & professional development

The SPECIEs Lab (Psychology department - UArizona) is looking for a postdoctoral fellow to join the team (please share)!

Start date: Summer-Fall 2026
Review: until filled
Duration: 3-years
Materials: 1-2 page cover letter, CV, 2-3 reference contacts
Send materials to: dguevarabeltran@arizona.edu

Jealousy and the Emotions Debate: Conceptualizing Romantic Jealousy as a Bayesian Infidelity-Detector Author(s): Gelbart, Benjamin | Advisor(s): Conroy-Beam, Daniel | Abstract: For decades, affective scientists have debated whether discrete emotions—such as anger, sadness, fear, and so on—are products...

"strong evidence for the possibility that romantic jealousy approximates optimal design for infidelity detection--with up to 89% of the variance in jealousy explained by the posterior probability of infidelity computed using Bayes' Theorem"

Advances in Methods and Practices in Psychological Science: Special collections Subscription and open access journals from Sage, the world's leading independent academic publisher.

Here's the link to our ever-expanding Collections! journals.sagepub.com/collection-i...

🚨 Using data from hundreds of wild pregnant meerkats, Thorley et al. show that gestational growth varies widely, is shaped by nutrition but not social conditions, and improves pup survival without shortening telomeres.

📖 Read the full paper here ➡️ buff.ly/2k2dKwt

A list of 7 claims about empathy that many people agree with, but that are likely wrong.

compass.onlinelibrary.wiley.com/doi/pdf/10.1...

Post Doctoral Associate: Evolutionary Medicine & Human Behavior - HBES The evolve-D lab, under the direction of Siobhán Cully in the Department of Anthropology seeks a postdoctoral researcher to join interdisciplinary projects addressing evolutionary medicine and human b...

📢 Job opening: Rutgers Anthropology is hiring a Postdoctoral Associate in Evolutionary Medicine & Human Behavior
Focus: interdisciplinary research on kinship, gendered labor, disability, and evolutionary medicine.
Priority review: Jan 3, 2026.
www.hbes.com/post-doctora...

In Memoriam Jane B. Lancaster (1935–2025), a Pioneer in Anthropology Click on the article title to read more.

I haven't seen this posted on here but the American Journal of Human Biology has run an In Memoriam on Jane Lancaster:

onlinelibrary.wiley.com/doi/10.1002/...

Thanks again, @epthepod.bsky.social, for having me! 🎧

💬 We discussed three research agendas in quite some depth: exploitation, identity & ingroup favoritism, and heroic behavior.

😊 Dave & David are wonderful hosts! After our conversation, I'm even more enthusiastic...

🫵 Can we inspire you too?

No meta-analytical effect of economic inequality on well-being or mental health - Nature A meta-analysis of 168 studies reveals that economic inequality is not significantly associated with subjective well-being or mental health.

"We therefore encourage policymakers to consider designing interventions to maximize reductions in absolute poverty rather than focusing on inequality per se."

EHBEA awarded a workshop grant this year to researchers aiming to strengthen evolutionary approaches to the study of behaviour in Chile & elsewhere in Latin America, as we're keen to use these awards for outreach beyond our usual community. Congrats to the organisers, & hope the workshop goes well 😊

ASU Psychology is hiring a Postdoctoral Research Scholar to study contemporary antisemitism (supervised by Drs. Neuberg & Barlev). Full-time research, NIH salary scale, start date Jan 12, 2026 (flexible).
Deadline: Dec 17, 2025.
More info: apply.interfolio.com/177756

Taking Stock of Advances in Methods and Practices in Psychological Science at the End of the Beginning - David A. Sbarra, 2025

My time as Editor of AMPPS is coming to an end-- here are some parting thoughts. journals.sagepub.com/doi/full/10.... .