It was a pleasure to be interviewed on the Giving Intelligence Podcast! We talked about how to identify highly effective charities, bridging donors' heart & head motivations, and the psychological science behind Giving Multiplier (@givingmultiplier.bsky.social).

❄️ Our Winter newsletter is here! Read about our donors' impact in 2025, our featured super-effective charity, and a creative fundraiser someone made raising $5,000 by running 40 miles for his 40th birthday (while in a carrot costume!). ✉️ mailchi.mp/givingmultip...

Grateful to join the board of @projectshort.bsky.social!

As 2025 winds down, we're here to multiply your charitable impact. Giving Multiplier adds matching funds when you split your donation between any charity close to your heart and one of our super-effective charities. No platform fees. ➡️ Try it out, join over 5,000 donors: givingmultiplier.org

⌛️ Two days left to double your donation to @give-directly.bsky.social for #PodsFightPoverty! Donate: givedirectly.org/pods

We've just crossed the $200,000 mark for #PodsFightPoverty! Thanks to more than 850 generous podcast listeners, we've helped lift over 150 Rwandan families out of extreme poverty. And there’s still 10 days to go!

Trolley Dilemma: you have to decide whether you would sacrifice 1 life to save 5. People make different decisions in slightly different versions of the problem, which unmasks secrets in brain imaging. Discover more on this week's Inner Cosmos with guest Joshua Greene.

“Our moral brains are beautifully designed for a world that no longer exists” - @davideagleman.bsky.social 📽️ Watch the newest episode of Inner Cosmos, a wide-ranging conversation with GM co-founder Prof. Joshua Greene: youtube.com/watch?v=6FW6... #PodsFightPoverty #InnerCosmos

This month, dozens of podcasts are collaborating to raise $1M for 700+ families living in extreme poverty in 3 villages in Rwanda. I'm proud to be supporting this effort in my capacity as host of #Choiceology. Please support this campaign and make a gift at: GiveDirectly.org/choice

#PodsFightPoverty is live! This holiday season, @givingmultiplier.bsky.social is partnering with @give-directly.bsky.social for a one-of-a-kind fundraiser to lift three entire Rwandan villages out of extreme poverty. Giving Multiplier is boosting first-time donations with a 50% match! (1/2)

“𝙏𝙝𝙚 𝙥𝙤𝙨𝙞𝙩𝙞𝙫𝙚 𝙥𝙤𝙬𝙚𝙧 𝙩𝙝𝙖𝙩 𝙤𝙧𝙙𝙞𝙣𝙖𝙧𝙮 𝙥𝙚𝙤𝙥𝙡𝙚 𝙝𝙖𝙫𝙚 𝙞𝙨 𝙨𝙩𝙪𝙣𝙣𝙞𝙣𝙜 𝙖𝙣𝙙 𝙨𝙤𝙢𝙚𝙩𝙝𝙞𝙣𝙜 𝙩𝙝𝙖𝙩 𝙬𝙚 𝙙𝙤𝙣’𝙩 𝙛𝙪𝙡𝙡𝙮 𝙖𝙥𝙥𝙧𝙚𝙘𝙞𝙖𝙩𝙚.” Listen to co-founder Joshua Greene, Harvard psychologist and neuroscientist, on the latest “You Are Not So Smart” podcast with @davidmcraney.bsky.social. 🔗 youarenotsosmart.com/2025/11/24/y...

New article I wrote at Behavioral Scientist (@behscientist.bsky.social): I share the psychological research on "drop-in-the-bucket" thinking, how this tendency shows up when trying to make an impact, and what we can do about it. Article: behavioralscientist.org/how-proporti...

Happy 5th birthday to @givingmultiplier.bsky.social! It's been an incredible joy directing the platform for the past couple years. Stay tuned for our biggest initiative yet, launching next month.

🍂 Our Fall newsletter is here! 🎧 See the impact of the $675,000 directed to charity by @ologies.bsky.social listeners in just two months 🐔 Learn how @thehumaneleagueus.bsky.social improves millions of farmed animals' lives 📖 Read our director's new article in @behscientist.bsky.social 👇 Link below

New research from Janek Kretschmer & Paul Smeets: separating donation decisions into two stages (1. how much to give, 2. which charity to support) increases charitable impact. Paper: papers.ssrn.com/sol3/papers....

A hen spends her life in a cage no bigger than an iPad, unable to spread her wings. This #WorldFarmAnimalsDay, let's change that. For less than a dollar, you can help free a hen, and your donation gets a 50% boost all week long. With your help, we can free 100,000 hens.

New article I wrote at Behavioral Scientist (@behscientist.bsky.social): I share the psychological research on "drop-in-the-bucket" thinking, how this tendency shows up when trying to make an impact, and what we can do about it. Article: behavioralscientist.org/how-proporti...

ICYMI: Three weeks ago, we were featured on the "Trolleyology" episode of @ologies.bsky.social. Since then, hundreds of Ologites have collectively directed an astounding $445,000 toward combating extreme poverty and climate change, supporting 230+ of their favorite nonprofits, and much more. Bravo!

Nice review of recent research showing that younger children start out with a more expansive moral circle than older children and adults @juliamarshall.bsky.social, @mattiwilks.bsky.social, @karrineldner.bsky.social www.nature.com/articles/s41...

Fantastic new episode of @ologies.bsky.social! An insightful (and often hilarious) discussion on navigating difficult moral decisions and Josh's applied research projects for expanding the circle of "us". Podcast: pod.link/1278815517/e...

♻️ Giving Multiplier powers a virtuous circle of giving. Matching funds inspire donations to highly effective charities. In turn, those donations encourage others to provide more matching funds. This "supply-and-demand" cycle creates impact today, while sustaining our platform for the future.

People in rich countries often underestimate how wealthy they are globally. A new study finds that a simple nudge correcting this misperception increases generosity: escholarship.org/uc/item/0wm7...

🌍 Featured super-effective charity: Clean Air Task Force (@cleanaircatf.bsky.social) CATF works in 40+ countries driving tech & policy solutions to fight climate change, including advanced nuclear energy and next-gen geothermal. 🔗 Read their mid-year impact report: catf.us/2025/06/2025...

People see giving time (volunteering) as more impactful than giving money (donating), in part because it feels more personal and connected to the self. New paper by Samantha Kassirer and Maferima Touré-Tillery: link.springer.com/article/10.1...

"Maybe we are born with a surprisingly inclusive capacity to care, and over time, we learn to direct that concern more selectively." New research on moral development, summarized on Substack by Lucius Caviola:

I’ve long believed that good reasoning can lead to better behaviour. But as Josh Greene and I discuss in this episode of “Lives Well Lived”, reason alone is often not enough. Josh describes how his thinking has evolved from the hope that moral philosophy informed by psychology could change...

Really cool new preprint: charity effectiveness information can boost donations. But framing matters. When cost-effectiveness falls below expectations, it can backfire and actually reduce giving. 📃 papers.ssrn.com/sol3/papers....

Important new paper for charitable giving: the preference for charities with lower overhead ratios (i.e., "overhead aversion") can be reduced when both: a) explaining the importance of overhead and b) prompting the donor to deliberate about their choice

🎉 New feature alert: monthly donations are here! You asked, we listened. With recurring donations on #GivingMultiplier, you can earn matching funds each month to both your favorite charity and a super-effective charity. 👉 Set up your monthly donation: GivingMultiplier.org

"Saving a child’s life is certainly something that everybody can be extremely proud of. Guided by research on differences in cost-effectiveness, many people can do this." ourworldindata.org/cost-effecti... (@ourworldindata.org)

Very cool new paper: simply providing multiple donation options (vs. just one) increases charitable giving by ~20%, without reducing the number of donors. 📰 doi.org/10.1037/xap0...

Featured super-effective charity: @helenkellerintl.org 💊 For under $2, their Vitamin A program can avert blindness, prevent malnutrition, & reduce mortality. Last year, Helen Keller Intl provided life-changing supplements to 43 million children in sub-Saharan Africa. #GlobalHealth #ImpactfulGiving

Our Winter newsletter is out! ❄️ In this edition, we feature one of our super-effective charities (@helenkellerintl.bsky.social), one of our trusted expert charity evaluators (@animalcharityev.bsky.social), and provide engaging resources for learning more about high-impact charitable giving.

Very proud of @givingmultiplier.bsky.social's impact last year!

What is an important fact about the world that you wish more people would know? Here is my answer: If we rely on the best data, many of us can save a child's life. And here is my article about it. ourworldindata.org/cost-effecti...

𝐌𝐲 𝐩𝐞𝐫𝐬𝐨𝐧𝐚𝐥 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐰𝐢𝐭𝐡 𝐜𝐡𝐚𝐫𝐢𝐭𝐚𝐛𝐥𝐞 𝐠𝐢𝐯𝐢𝐧𝐠: Ever since I was a teenager, I’ve felt exceedingly fortunate for the security of having my basic needs met, allowing me to freely pursue my interests. But I never really turned that gratitude into action.

Thanks to Dr. Alison Jane Martingano for having me on the Psychology and Stuff podcast! I had a lot of fun talking about @givingmultiplier.bsky.social and the psychology of charitable giving. Listen here: podcasts.apple.com/us/podcast/e...

New column out today in @bostonglobe.com's "Ideas" section! Prof. Joshua Greene and I make the case for applying a balanced approach to charitable giving, backed by recent research: www.bostonglobe.com/2024/12/18/o...

I've been interviewed by Joe Murray about our book Effective Altruism and the Human Mind, virtues for EAs, the psychology of X-risk, sleepwalk bias, rationality, and a bunch of related topics. www.youtube.com/watch?v=My9X...

How can nonprofits effectively present cost-effectiveness information? 🎯 A brand-new research paper by Joshua Lewis and @deborahsmall.bsky.social finds that people use impact cost information (for example: $1 to provide a meal) as a target for how much they should donate. Brief summary🧵

A pleasant surprise to see my research with @daviddesteno.bsky.social featured in @aofcompassion.bsky.social! "Numbing Toward Future Generations: Why We Struggle to Care, and How We Can Change"

It's Giving Tuesday - the most important day of the year for charitable giving. If you a) have a charity that means a lot to you and b) are open to learning about top-rated charities, I hope you'll take a few minutes to check us out @givingmultiplier.bsky.social. 𝐃𝐨𝐧𝐚𝐭𝐞 𝐭𝐨𝐝𝐚𝐲: givingmultiplier.org

Tomorrow is Giving Tuesday (@givingtuesday.bsky.social)! Our co-founder Prof. Joshua Greene joined the Social Science Bites podcast to give a bite-sized summary of his research on what inspires people to give back. 🎙️ Full episode: open.spotify.com/episode/3fyF... #GivingTuesday

It was a blast being interviewed for the "Money to Give" Podcast! We discuss: - What are the key psychological factors that motivate people to donate? - Why do our minds have trouble caring for large numbers of individuals? - How is donating like dieting? podcasts.apple.com/us/podcast/m...

Excited to be on @bsky.app! Every ~2 weeks, I've summarized a different research paper on the psychology of charitable giving. Moving forward, I'll post summaries on Bluesky. In the meantime, here's a backlog of the post series (via LinkedIn):