Tweets from the labs of Joshua Greene and Fiery Cushman
Joined March 2015
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Morality Lab retweeted
New episode! Harvard's Josh Greene joins the show to talk about applying his moral psych research to change the real world, including @GiveMultiplier, a donation platform that encourages higher-impact giving. Plus: is Josh a moral realist?share.fireside.fm/episode/Ah…
Morality Lab retweeted
The Perverse Tyranny of a Perfect Transcript - In The Atlantic, my collague Josh Greene makes the case for why not every Harvard student should get an A in every course. theatlantic.com/ideas/2026/0…
Morality Lab retweeted
Can we leverage principles of psychology to increase the efficacy of charitable giving? Listen to the full episode to find out how this week's guest, Harvard psychologist Joshua Greene, works to do this.
eagleman.com/podcast/134
Morality Lab retweeted
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!
We’re matching all first-time donations for @GiveDirectly through the end of the year, doubling how much cash you send directly to families in need.
Join us: givedirectly.org/pods
Morality Lab retweeted
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.
Morality Lab retweeted
“Our moral brains are beautifully designed for a world that no longer exists” - @davideagleman
📽️ Watch the newest episode of Inner Cosmos, a wide-ranging conversation with GM co-founder Prof. Joshua Greene: youtube.com/watch?v=6FW6ioeG…
#PodsFightPoverty #InnerCosmos
Morality Lab retweeted
It's #GivingTuesday! In partnership with over 30 podcasts, we're launching our biggest campaign to date: #PodsFightPoverty
Our goal is to raise $1M for @GiveDirectly, sending no-strings-attached cash to all 700+ families spanning three villages in Rwanda.
We're adding 50% in matching funds for first-time donors!
Learn more: givedirectly.org/pods
#PodsFightPoverty is live!
This holiday season, @GiveMultiplier is partnering with @GiveDirectly 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)
Morality Lab retweeted
“𝙏𝙝𝙚 𝙥𝙤𝙨𝙞𝙩𝙞𝙫𝙚 𝙥𝙤𝙬𝙚𝙧 𝙩𝙝𝙖𝙩 𝙤𝙧𝙙𝙞𝙣𝙖𝙧𝙮 𝙥𝙚𝙤𝙥𝙡𝙚 𝙝𝙖𝙫𝙚 𝙞𝙨 𝙨𝙩𝙪𝙣𝙣𝙞𝙣𝙜 𝙖𝙣𝙙 𝙨𝙤𝙢𝙚𝙩𝙝𝙞𝙣𝙜 𝙩𝙝𝙖𝙩 𝙬𝙚 𝙙𝙤𝙣’𝙩 𝙛𝙪𝙡𝙡𝙮 𝙖𝙥𝙥𝙧𝙚𝙘𝙞𝙖𝙩𝙚.”
Listen to co-founder Joshua Greene (@MoralityLab), Harvard psychologist and neuroscientist, on the latest “You Are Not So Smart” podcast with @davidmcraney.
The interview discusses how the brain generates moral beliefs, the science on motivating high-impact charitable giving, and new research utilizing a cooperative quiz game to reduce political polarization.
🔗 youarenotsosmart.com/2025/11…
Morality Lab retweeted
🎉 Giving Multiplier turns 5!
We launched in 2020 as a proof of concept — could we apply behavioral science to help people increase their charitable impact?
“We would have been happy if we raised a little bit
better than bake sale," said co-founder Prof. Joshua Greene (@MoralityLab).
Five years later, we're celebrating $5 million in donations from 5,000 donors, supporting some of the world’s most cost-effective charities addressing global health, climate change, and much more.
Thank you!
#GivingMultiplier #EffectiveGiving
Morality Lab retweeted
📰 Greene Lab research featured today in The @BostonGlobe.
At first-year orientation in August, 900 @Harvard students played "Tango", a two-player online trivia game that builds bridges across political divides. Research led by PhD student Lucas Woodley.
bostonglobe.com/2025/10/03/b…
Morality Lab retweeted
🧵1/12 New GreeneLab paper in Nature Human Behaviour—after 5+ years! Our cooperative quiz game, Tango (letstango.org), defuses political animosity and improves democracy-related attitudes. Some key effects last 4 months
doi.org/10.1038/s41562-025-0…
Morality Lab retweeted
"Going into this, I would’ve been happy if [Giving Multiplier] was one step above bake sale."
In the latest Changed My Mind podcast episode (co-hosted by @FarmKindThom), @Harvard Professor Josh Greene is interviewed about his fascinating career journey.
After studying moral dilemmas in the lab, he decided to apply his research to address real-world issues, co-founding Giving Multiplier to promote high-impact charitable giving and more recently launching Tango, a two-player quiz game that bridges partisan divides.
Morality Lab retweeted
🎙️ New on the Lives Well Lived podcast hosted by @PeterSinger and Kasia de Lazari-Radek: Interview with Joshua Greene, Harvard psychology professor and Giving Multiplier co-founder, on uniting moral tribes.
youtube.com/shorts/NvJYjULmQ…
#MoralPsychology #GivingMultiplier
Morality Lab retweeted
Tomorrow is Giving Tuesday. #MindscapePodcast guest Joshua Greene helped set up a special code for listeners, with which their charitable donations are matched at a higher rate. It's still working!
givingmultiplier.org/invite/…
Mindscape 176 | Joshua Greene on Morality, Psychology, and Trolley Problems. What's going on in our brains when we decide between moral actions?#MindscapePodcast
preposterousuniverse.com/pod…
Morality Lab retweeted
Is there a special charity you want to give to because you have a personal connection, but at the same time you know that, dollar-for-dollar, it won't do nearly as much good as other charities you could give to? Amazingly, you can do both, and still not give less to the most effective charity you can find! Check out @GiveMultiplier! givingmultiplier.org/
#GivingTuesday
Morality Lab retweeted
Looking to donate for #GivingTuesday?
Giving Multiplier (givingmultiplier.org) is an award-winning donation platform created by researchers at Harvard University.
Give to your favorite charity AND one of our expert-recommended charities. We'll add matching funds on top!
Morality Lab retweeted
Looking forward to reading in more depth, but I thought this was really nice summary of the ways in people might reason about mutually-acceptable (moral) norms and actions!
“Resource-rational contractualism: A triple theory of moral cognition.” With my incredible co-authors @NickJChater, Josh Tenenbaum, and @fierycushman. Available here: psyarxiv.com/p48t7/ (1/n)
Morality Lab retweeted
What happens in your brain when you go from believing something to merely thinking about it? In our new publication in JOCN we suggest that thought without believe requires inhibitory processes supported by the right IFG.
@moralitylab
direct.mit.edu/jocn/article/…
Morality Lab retweeted
Why are extremely harmful punishments like extended solitary confinement considered acceptable? @fierycushman and I suggest that punishments we condemn are not those that cause the most harm, but those that make us feel the most uncomfortable to administer.psyarxiv.com/tcsve/
Morality Lab retweeted
Why exactly do we punish negligence?
New paper from @SarinArunima and @fierycushman argues: we are blaming the agent for not having certain *thoughts*. Connects up with much larger issues about how people's values impact what comes to their minds
psyarxiv.com/mj769/