I am happy to announce that our project on risk and social learning is now in press at Psychological Review. Several new additions and revisions thanks to detailed feedback from colleagues and anonymous reviewers. osf.io/preprints/so...
@psmaldino.bsky.social @babeheim.bsky.social
27.09.2025 00:14 β π 29 π 12 π¬ 1 π 1
Check out the whole paper for many more findings, robustness checks, and to see the work of a rising π« @hongkai1.bsky.social
26.09.2025 20:30 β π 2 π 1 π¬ 0 π 0
Coolest evidence for differentiation as a cause might be an experiment (n=4000) simulating a comment thread
Incentivizing comment uniqueness (but not conformity) leads negative discourse to rise over time
Coauthored w @williambrady.bsky.social, @ycleong.bsky.social, Yutong Jiang, and Alex Koch
26.09.2025 20:30 β π 3 π 0 π¬ 1 π 0
π¨New preprintπ¨
osf.io/preprints/ps...
In a sample of ~2 billion comments, social media discourse becomes more negative over time
Archival and experimental findings suggest this is a byproduct of people trying to differentiate themselves
Led by @hongkai1.bsky.social in his 1st year (!) of his PhD
26.09.2025 20:30 β π 43 π 12 π¬ 2 π 2
The @spspnews.bsky.social Religion & Spirituality Preconference is accepting applications for talks, data blitzes, & posters until 10/23! We're excited to hear from Kathleen Corriveau, @alexandraworm.bsky.social, @drmeltemyucel.bsky.social & @joshcjackson.bsky.social. More info: tinyurl.com/33x9za7r
17.09.2025 16:32 β π 13 π 5 π¬ 1 π 1
One of my favorite conferences, @culturalevolsoc.bsky.social, just released key dates and other info!
I highly recommend checking it out for great research from across the social, behavioral, and natural sciences
17.09.2025 02:12 β π 4 π 1 π¬ 0 π 0
Complex technology requires cultural innovations for distributing cognition
Over the last decade, new research has shown how human collectives can develop technologies that no single individual could discover on their own. Howβ¦
π¨ New paper alert! (slightly belated)
We (with @joshcjackson.bsky.social) suggest that complex technologies, as they need several (often many) people to use them, require innovations that distribute cognition to help regulate cognitive load and coordinate.
www.sciencedirect.com/science/arti...
09.09.2025 14:48 β π 28 π 8 π¬ 0 π 0
How religion declines around the world
A countryβs religious affiliation tends to decline in three transitional stages that unfold across generations, a new paper using Center data proposes.
Below is my new post about our Three Stages of Religious Decline paper (www.nature.com/articles/s41...).
We argue that a similar process of decline affects countries on every populated continent, including countries in which Christianity, Islam, Buddhism or Hinduism is the largest religion.
Aπ§΅
02.09.2025 17:15 β π 83 π 34 π¬ 11 π 5
@helenamiton.bsky.social and I have a new paper out:
www.sciencedirect.com/science/arti...
Past theories focus on how we evolve complex technologies (jet engines), but neglect cultural innovations that help us operate these technologies (pilot checklist)
Paper has tons of examples and new theory!
05.09.2025 20:46 β π 21 π 11 π¬ 2 π 0
Social media often feels saturated with politics and morality - but is that feeling accurate? Our new paper finds that moralization has increased markedly on social media from 2013-2021, more than traditional media. See π§΅ below!
22.07.2025 15:44 β π 16 π 6 π¬ 1 π 0
One of the largest-scale analyses of historical text data that I have contributed to
The finding: language on social media has become more moralized over the 21st century; we don't see the same trends on news media
Kudos to the first author @curtispuryear.bsky.social on the enormous effort
22.07.2025 15:50 β π 6 π 2 π¬ 0 π 0
Alex Koch contributed endless theoretical insights over two years
Tessa Charlesworth gave some of the most useful and thorough comments I have ever read
And @andyluttrell.bsky.social pushed this paper to the point it is now
22.07.2025 15:35 β π 0 π 0 π¬ 0 π 0
I also want to recognize the authors once more:
@yuanzeliu.bsky.social completed this massive project as a pre-doc, which speaks to his promise as a scholar
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Our general discussion covers this framework in great depth, and uses it to make tentative inferences about all of our findings
This is a working paper, so any feedback would be helpful!
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
- When social dilemmas change, trait language changes -
Example: The rising division of labor over the last 200 years has meant that people are selected on specific competences
This might be one reason why agency language has become more semantically heterogeneous
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
- We use trait words as diagnostic tools for prediction -
Example: We may have many negative communal words because cooperation is common, so it is more diagnostic to communicate about deviations from cooperation
But since skill is rare in most domains, we have many positive words about agency
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
- Trait words reflect the nature of social dilemmas -
Example: We view three of the FACT dimensions as mapping onto classic social dilemmas identified in game theory
-Communion β‘οΈ cooperation
-Traditionalism β‘οΈ coordination
-Agency β‘οΈ whether people can cooperate and coordinate
22.07.2025 15:35 β π 4 π 0 π¬ 1 π 0
Our approach makes several simple assumptions that encompass our different findings
1. Trait words reflect the nature of social dilemmas
2. We use trait words as diagnostic tools for prediction in these dilemmas
3. When social dilemmas change, we also change our trait language
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
The general discussion of our paper reviews these findings using a new βfunctional constructionistβ approach to trait words, building on past work in emotion
Functional β‘οΈ trait words are useful
Constructionist β‘οΈ There is no single trait space
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
We find that communion words are converging in semantic spaceβextending work on the collapse of morality into a single dimension (cdr.lib.unc.edu/downloads/g7...)
But words about agency/competence are diverging in semantic space. They are becoming less related to each other over time
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
We also see interesting trends in the semantic coherence of these factors
We calculate coherence by looking at clustering in semantic space over time from word embeddings
Here are clusters of words projected based on their 19th and 20th century embeddings
22.07.2025 15:35 β π 3 π 0 π¬ 1 π 0
The small change we do see is a surge of βtraditionalismβ words around the rise of participatory democracies in Europe
βConservativism-liberalismβ is the βyoungestβ trait dimension by date of introduction
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Finally, we look at the history of trait words using dates of origin from the Oxford English Dictionary
This plot shocked me β our trait vocabulary has been remarkably stable over time
We have always had more words about communion and the fewest words about fitness
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Negative and positive words are also vary in their specificity.
Negative are more likely to be specific, whereas positive words are more likely to generalize across many dimensions
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Are there more negative or positive trait words? I once assumed there were more negative words because of negativity dominance
The real story is complicated
Communion dimensions are indeed filled with negative words.
But we have more positive words about agency, traditionalism, and fitness
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Most trait dimensions are evaluative β the have positively and negatively valenced poles (it is good to be friendly and bad to be unfriendly)
But some dimensions are not. Communion and agency are more evaluative than traditionalism or fitness dimensions
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
For example, we find that Communion words are highly clustered (eg. words expressing friendliness tend to also express morality)
But words about traditionalism are spread across the network, closely knit with communion and agency
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Although this FACT model is interesting and parsimonious, it masks variation within factors, and links between factors
The network below shows all words connected by their overlapping semantics.
The FACT factors partly organize the network, but lots of complexity remains
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
In an EFA, these 24 dimensions reduced to a four-dimension FACT model
Fitness (e.g., Attractiveness)
Agency (e.g., Assertiveness)
Communion (e.g., Morality)
Traditionalism (e.g., Conservatism)
Our model contains parts of prior models, most notably the ABC model of social evaluation
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
After collecting the words, we turned to their semantic structure
We took 24 dimensions from a review of personality and psych science lit. Then Prolific workers rated all words on these dimensions
This plot shows how some words are generalized (relevant to many dimensions); others are specific
22.07.2025 15:35 β π 0 π 0 π¬ 1 π 0
Psychologist study social cognition, stereotypes, individual & structural, computational principles. Assistant Prof @UChicago
Psychology Lecturer at the University of Technology Sydney
morality psychology, computational modelling, belief updating, decision making, open science
(he)
scholar.google.com/citations?user=Juk4a9IAAA
Organizational Behavior PhD Student @ Stanford Graduate School of Business ο½Studying emotions and morality on social media
Assistant professor studying social and developmental psychology at the University of Illinois, Urbana-Champaign. @uiucmosaiclab.bsky.social
Duke and UVA alumna; she/her
anthropologist & cognitive scientist
PhD candidate @ UCM CIS
merging cultural evolution with decision-making under uncertainty and risk
anthrocult.org
Mixed-Methods Researcher at Pew Research Center | PhD in Developmental Psychology | she/her
Assistant Prof. at Stanford GSB
Assistant Professor she/her. I study how people think about social relationships. Usually with babies and kids.
ashleyjthomas.com
Professor, Department of Psychology, New York University
Research: gender, stereotypes, motivation, explanation
President, @cogdevsoc.bsky.social
Married to @joecimpian.bsky.social
Website: https://cimpianlab.com
Social psych + evo anthropology: Cooperation, interdependence, emotion. Assistant Professor, Department of Psychology, University of Arizona.
http://psycheddiego.mystrikingly.com/
π Misinformation, social media & the news ποΈ
π¨π Postdoc at the University of Zurich, previously Reuters Institute & ENS π«π·
#rstats #PsyTeachR #PsySciAcc #OpenResearch #CodingClub #ManyFaces (overwhelmed by social media) π³οΈβπ she/they
Sterling Professor of Social and Natural Science at Yale University. Sociologist. Network Scientist. Physician. Author of Apollo's Arrow; Blueprint; Connected; and Death Foretold. Director of the Human Nature Lab: https://humannaturelab.net
Director of the Centre for Culture and Evolution, Brunel University London @brunelcce.bsky.social. President of the European Human Behaviour and Evolution Association @ehbea.bsky.social
https://www.rebeccasear.org/
Auditing the challenges of democracy in the 21st century for the Danish parliament with a particular focus on social media, mistrust and political alienation.
Political science professor at Aarhus University, Denmark.
Primatologist. Biological anthropologist. Recovering academic. Mammal Madness fan. Dog mom to the cutest rescue dog. Expertise in social relationships and stress in monkeys, apes, & humans, and the systemic inequities in academia & science. She/her
Assistant Professor of Psychology at Duke University studying kids & culture. Director of the Mind & Culture Lab. Mom x3. Some people just want to watch the world learn.
dorsaamir.com | mindandculturelab.com
Social Psychologist, Data Scientist, Baseball Fan, Dog Dad, Improviser
Assistant Professor @msupsychology.bsky.social β’ studying evolution, gossip, morality β’ Previously @ Duke, UVA, IMPRS LIFE β’ she/her β’ Founder: @psychresearchlist.bsky.social β’ Lab: @moralmindslab.bsky.social β’ www.meltemyucel.com
Paleoanthropologist | Chair and Professor of Anthropology, University of WisconsinβMadison π§ͺπΊπhttps://www.johnhawks.net