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Herbert Chang 張賀鈞 @herbertchang.bsky.social · 12d

This study was powered by #CatBoost, a machine learning model whose name was too perfect to pass up 🐱
Paper also available here: www.herbert-chang.com/researchport...

Preprints | Herbert Chang

www.herbert-chang.com

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · 12d

💵 Cat owners > Dog owners in total donations.
One reason: the urban–rural divide—cats are more common in high-cost-of-living cities, where donation levels are higher overall.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · 12d

💵 Cat owners donate more frequently and to a wider variety of causes. This may be linked to higher psychological openness and neuroticism often associated with cat people.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · 12d

💵 Non-pet owners give the most money overall—but they give less frequently and to fewer causes.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · 12d

𝐍𝐞𝐰 𝐏𝐚𝐩𝐞𝐫 Alert! Are you a #dog person or a #cat person? Since the dawn of time, we have debated their superiority… but your answer reveals how you give to charity.
I analyzed 787M donations ($69B) across 10 years. A thread 🧵

Paper: www.tandfonline.com/doi/metrics/...

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Reposted by Herbert Chang 張賀鈞

renebekkers @renebekkers.mastodon.social.ap.brid.gy · 15d

The unavoidable has happened: here's a study on pet ownership and donation behavior. Can you DAG this?
https://www.tandfonline.com/doi/abs/10.1080/08927936.2025.2544418

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Aug 8

Grateful for my co-authors (and mentors as this was a dissertation chapter) James Druckman, @emilioferrara.bsky.social, and @robbwiller.bsky.social
#SocialMedia #Politics #ComputationalSocialScience #PNASNexus #RetweetAsymmetry

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Aug 8

3/ Our analysis shows that
🔹 Liberals = more diverse, more toxic info environments
🔹 Conservatives = more filtered, less cross-cutting exposure
These results show that blanket, one-size-fits-all content moderation could have unintended ideological effects.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Aug 8

2/ Liberals also amplify toxic tweets—especially when Democrats criticize Republicans. However, when Conservatives avoid toxic content, when sourced from Democrats.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Aug 8

1/ Liberals retweet both Democrat and Republican lawmakers—across many issues.
Conservatives, by contrast, mostly share Republican-owned content.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Aug 8

📢 Our new paper is out in PNAS Nexus!
We analyzed 13M users, 1.3M congressional tweets, and 3.5B tweets of media diet to uncover how liberals and conservatives share political content differently. 🧵
Full paper: academic.oup.com/pnasnexus/ar...

Liberals and conservatives share information differently on social media

Abstract. Social media provides citizens with direct access to information shared by politicians. Citizens, in turn, play a critical role in diffusing such

academic.oup.com

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

Special shout out to my two brilliant collaborators @ebharrington.bsky.social and Dan Rockmore.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

Huh? Yes: elites in well-governed countries (Scandinavia, Singapore, etc.) also offshore wealth.

Why? To dodge high taxes, strict enforcement, or just to stay under the radar.

Secrecy is essentially a tool for both fear of authoritarianism and transparency.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

Some highlights from the data. Corrupt countries or where asset confiscation is likely, elites use diversification.

And paradoxically: strong democracies = some form of identity concealment.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

Elites don’t just stash money in tax havens—they strategically choose how and where to hide it.

We find three main “secrecy strategies”:

1. Diversify assets across jurisdictions

2. Conceal identity (nominees, bearer shares)

3. Use blacklisted havens despite stigma

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

We analyzed 6.9TB of leaked offshore data (Panama, Paradise, Pandora Papers) from the @icij.org and combined that with established Rule of Law indices from the World Justice Project.

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jul 17

What conditions foster the use of offshore finance?

Excited to share our work on how elites across 65 countries use the offshore financial system to keep their assets hidden.

Coverage: home.dartmouth.edu/news/2025/07...

Paper Link: doi.org/10.1371/jour...

The Patterns of Elites Who Conceal Their Assets Offshore | Dartmouth

home.dartmouth.edu

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Jun 22

Incredibly proud to be part of @mingyuezha.bsky.social top paper at #ica25!

If you’re interested in using game theory to quantify collaboration dynamics, she’ll be presenting this at #Cysoc #ICWSM in Copenhagen tomorrow, please swing by!

Full paper: lnkd.in/gegvA4g7

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Apr 3

Excited to be at #MPSA for the first time! Will be presenting two papers:

Use of AI generated images in the 2024 US Presidential Election. (LaSalle 3, 7th floor, 11:40-1:10 PM Th)

Then, misinformation and conjoint analysis of the 2024 Taiwanese elections on Friday.

Please stop by! #mpsa2025

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Reposted by Herbert Chang 張賀鈞

Francesco Pierri @frapierri.bsky.social · Jan 30

🚨 Call for Papers 🚨
We are organizing a Special Issue on "Risks and Unintended Harms of Generative AI Systems" at ACM TIST!

More details here: dl.acm.org/journal/tist...

Deadline: May 31, 2025 (review on a rolling basis)

#LLM #misinformation #disinformation #AI #genAI

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Herbert Chang 張賀鈞 @herbertchang.bsky.social · Dec 2

Thrilled to be on Forbes Under 30 for Science!

(Still getting used to Bluesky 🥳 😅 )

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Reposted by Herbert Chang 張賀鈞

Dartmouth Arts and Sciences @dartmouthartsci.bsky.social · Nov 28

Congrats to @herbertchang.bsky.social, assistant professor of quantitative social science and Dartmouth 2018 alum, who is featured in the 2024 #ForbesUnder30 in Science list! 🎉 Via @Forbes ⤵️ bit.ly/40WgZHG

Herbert Chang

Herbert Chang on the 2024 30 Under 30 - Science - Herbert Chang's goal is to realize democratic values in our socio-technical infrastructure by studying

bit.ly

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Reposted by Herbert Chang 張賀鈞

Dartmouth Arts and Sciences @dartmouthartsci.bsky.social · Oct 19

Dartmouth professor @herbertchang.bsky.social led a study into how pop culture icons’ social media messages influenced mask-wearing habits during the pandemic, via Vermont Public ⤵️

Dartmouth researcher shares how K-pop fans helped spread public health info during the pandemic

At the height of the COVID-19 pandemic, we received a lot of public health guidance from the CDC, NIH and WHO. But another three-lettered group may’ve dwarfed their collective influence: BTS, the Ko...

www.vermontpublic.org

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Reposted by Herbert Chang 張賀鈞

Ben Preis @benjaminpreis.com · Oct 2

🎉🎉 Let me use my first post here to announce that my first dissertation paper has been accepted to the Annals of the AAG. Pre-print forthcoming to my website, and hopefully published by AAG soon! 🎉🎉

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Reposted by Herbert Chang 張賀鈞

Elsa Voytas @elsavoytas.bsky.social · Oct 8

final week to apply to the Quantitative Social Science opening at dartmouth!

apply.interfolio.com/130125

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