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What Chimpanzees Reveal About How We Connect and Divide with Aaron Sandel | The Curiosity Shop

Primatologist Aaron Sandel has spent over a decade studying the Ngogo chimpanzees, witnessing one of the largest known chimp communities split into two factions. In this episode, Aaron joins Brené and Adam to explore what chimpanzees can teach us about friendship, conflict, belonging, and human nature. He shares what he learned from watching these chimps show affection, navigate dominance hierarchies, and face the effects of division within their own community. Aaron also reflects on what it was like to watch chimps he knew by name turn against one another, while exploring the surprising depth of bonds between chimpanzees. Together, they explore the parallels between chimpanzee behavior and the ways we harmonize, polarize, and build communities in our own lives. #adamgrant #brenebrown #thecuriosityshop #chimpempire Don't miss a video! Subscribe NOW: https://www.youtube.com/@TheCuriosityShop About The Curiosity Shop: Research professor Brené Brown and organizational psychologist Adam Grant are partnering on a new weekly podcast grounded in an unflinching commitment to learning and unlearning. At a time when public discourse rewards certainty over inquiry, The Curiosity Shop features two of the world's most sought-after experts on connection, change, and leadership making the case for slowing down, asking better questions, and embracing informed complexity over easy answers. Bringing together their left and right brain sensibilities — she’s a qualitative researcher; he’s a quantitative researcher — they explore some of the defining questions of our time, unpack the research reshaping how we live, lead, and love, and dive deep into the ideas, evidence, and cultural moments intriguing them the most. New episodes drop every Thursday. Part of the Vox Media Podcast Network. Connect with The Curiosity Shop: Instagram: https://www.instagram.com/thecuriosityshop/ Apple: https://podcasts.apple.com/us/podcast/id1730985049 Spotify: https://open.spotify.com/show/3oEPsPKDhPVoNNL7pH5db6?si=e2483abb4eed4b03 Connect with Brené Brown: Instagram: https://www.instagram.com/brenebrown/ LinkedIn: https://www.linkedin.com/in/brenebrown/ Facebook: https://www.facebook.com/brenebrown/ Connect with Adam Grant: Instagram: https://www.instagram.com/adamgrant/ LinkedIn: https://www.linkedin.com/in/adammgrant/ X: https://x.com/adammgrant/ ============================= Chapters: 0:00 Welcome to The Curiosity Shop 1:02 Welcoming Dr. Aaron Sandell 2:03 The Science Of Social Bonds 6:47 How He Became A Primatologist 11:04 Do We Need A "Them" For An "Us"? 12:15 Why The Western And Central Groups Are Divided 16:05 How Chimp Dominance Hierarchies Work 19:21 Miles, Jackson, And The Community Split 27:07 Mysterious Deaths Fracture The Group 29:03 Jackson Takes Over As Alpha 32:39 Territorial Patrols And Lethal Violence Explained 37:35 A Devastating Loss: Errol 44:02 Choosing Understanding Over Demonization 52:09 Chimps And The Meaning Of Friendship 59:16 Mother-Offspring And Male "Brotherhood" 1:01:06 Why Adolescent Females Leave The Group 1:08:27 Lightning Round 1:14:34 Brené & Adam's Takeaways Show Notes: http://thecuriosityshop.com/podcast/what-chimpanzees-reveal-about-how-we-connect-and-divide-with-aaron-sandel/ What Chimpanzees Reveal About How We Connect and Divide | The Curiosity Shop https://www.youtube.com/@TheCuriosityShop

Brené BrownhostAdam GranthostDr. Aaron Sandelguest
Sep 3, 20261h 25mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Ngogo chimps reveal how bonds form, fracture, and turn violent

  1. The episode uses the Ngogo chimpanzees (featured in Netflix’s *Chimp Empire*) to explore how social bonds form, fracture, and sometimes turn lethally violent, with parallels to human polarization and war.
  2. Dr. Aaron Sandel explains that Ngogo’s “western” and “central” groups were one community for decades, then polarized after subtle avoidance behaviors emerged around a leadership transition and the loss of socially connecting older males.
  3. The hosts probe whether an external enemy is necessary for group cohesion, and Sandel argues cohesion can preexist conflict even though intergroup threat can intensify bonding.
  4. The conversation reframes chimp dominance: the alpha is chiefly the top of a deference hierarchy rather than a true “leader,” and hierarchy may reduce everyday aggression by clarifying rank.
  5. Sandel discusses the ethics and psychology of witnessing chimp violence—advocating understanding over demonization—then broadens to chimp friendship, “brotherhood,” mother-offspring bonds, and why adolescent females disperse.

IDEAS WORTH REMEMBERING

5 ideas

You don’t need a “them” to build an “us,” but conflict can amplify “us-ness.”

Sandel argues that within-group cohesion (especially in Ngogo’s western “neighborhood”) existed before the split, and while intergroup threat can intensify bonding, it isn’t required to create it. The Ngogo case highlights how communities can feel strong internally even without a clear external enemy—until conditions shift and an out-group identity crystallizes.

Community splits can begin when key social connectors disappear and power dynamics destabilize.

The western and central groups were one community for decades, with three interlinked neighborhoods. A cluster of deaths among older, socially well-connected males (likely disease) removed “bridge” individuals, coinciding with heightened dominance instability as Jackson rose—conditions that may have made avoidance and later polarization more likely.

Chimp “alphas” are about rank and deference more than leadership—and hierarchy can sometimes reduce violence.

In chimp societies, the alpha male is primarily the top of the dominance hierarchy (not necessarily a visionary leader). Sandel notes dominance hierarchies can reduce day-to-day aggression by clarifying who defers to whom, even though hierarchy also shapes access and pressure (including mating).

Out-group identities can override past relationships fast—and violence can lock in the new identity.

After the split (solidifying by 2018), chimps began treating former community members as outsiders; Errol’s killing became a stark marker that prior familiarity no longer protected individuals. The conversation highlights how perceived threat and retaliation cycles can blur offense vs. defense, resembling human escalation dynamics.

Choosing understanding over demonization can reveal the mechanisms that sustain conflict.

Sandel describes not demonizing individual “perpetrator” chimps as a way to preserve scientific understanding of causes and context; Adam Grant notes demonization can obstruct comprehension. The group discusses the human parallel: accountability matters, but dehumanization/demonization can block systemic insight.

WORDS WORTH SAVING

5 quotes

My hot take is y- I don't think you need, uh, an enemy to build community. I don't think you need a them for an us.

Dr. Aaron Sandel

I wonder to what extent we should focus our attention more on sort of the causes and the context and maybe less demonization of the individuals who are perpetrating these horrible things.

Dr. Aaron Sandel

It was like childhood dream already not quite there, but it's pretty close. You know, one gene is off, but it's hard and boring.

Dr. Aaron Sandel

So much of what we think of as human is not because we're human. Yes, it's important part of, of being human, but it's because we're apes.

Dr. Aaron Sandel

It's like brotherhood, or it's almost like the closest thing I've seen in the animal kingdom to romantic love.

Dr. Aaron Sandel

Ngogo chimp community and *Chimp Empire* contextWestern vs. central split and early avoidance signalsDisease deaths and loss of social “bridges”Dominance hierarchies and alpha transitionsTerritorial patrols and lethal intergroup aggressionDemonization vs. systemic understanding of conflictChimp friendship, alliances, male pair-bond–like ties, and female dispersal

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