1. Introduction to Human Behavioral Biology

Stanford15 HN recommenders · 2012–2026
20.5M views · lecture · evergreen · Uploaded 2011-02-01

The opening lecture of Robert Sapolsky's Stanford course on Human Behavioral Biology, explaining the course premise and how to avoid categorical thinking. It starts a roughly 25-lecture series on how biology, genes, hormones and environment shape behavior.

One of the most consistently recommended lecture series on HN, praised as fascinating, funny and eye-opening about human behavior across many scales.

Watch on YouTube

20 comments from Hacker News

@super_mario2012 · in “Iterated prisoner's dilemma contains evolutionary opponent dominating strategies”

That's well known if you ever took evolutionary biology course, or game theory course. Even popular books like Richard Dawkins' "The Selfish Gene" talk in some detail about it, and this 25 hour video course is also a must see for pretty much everyone: [VIDEO]

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@ehsanu12012 · in “What Darwin's Theory of Evolution Reveals About Artificial Intelligence”

This is a common fallacy about evolution, and is explained beautifully by the anthropic principle, or in other words, the innate selection bias of our existence. I'm a little confused about how the anthropic principle explains this fallacy (and it is a fallacy to be sure). I guess you're referring to how natural selection (and all the other sorts of selection that occur regularly) lead to the existence of "appropriate" organisms and features. But I think knowing some of the actual details in how evolution works at all the different levels (molecular bio, epigenetics, competition/cooperation, behavior, etc, etc, etc) serves as an even better explanation. Here's a 25 lecture course from Stanford that explains just that: [VIDEO]

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@ploomans2015 · in “Robert Sapolsky talks turbulence – teens, stress, and the information age”

BTW, you should watch his lecture series on the biology of behaviour: [VIDEO] For me one of the best teachers you will find online

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@daodedickinson2015 · in “Study of Holocaust survivors finds trauma passed on to children's genes”

There are definitely known links between psychology and genes; we know the epigenetics behind why if mothers are stressed when pregnant, their children will be more stressed for their entire lives. Far too many people still have the Jurassic Park view of DNA and believe in Central Dogma—but it has become clear that environment and all sorts of post-conception events effect genetics. Dr. Sapolsky, in this lecture series, explains, for just one example, how and why Lamarckian evolution sometimes occurs: [VIDEO]

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@guzmanovich2016 · in “Ask HN: What's the most useful online course you have watched?”

Robert Sapolsky`s lectures on human behavioral biology. Fascinating, funny and gives insights into many different topics like cultural differences and nationalism. [VIDEO]

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@Frozenlock2016 · in “The Real Problem with Facebook and the News”

I like that you accept to evaluate someone else's position before instantly putting them into the little "bigot" box. It's much better to leave traces of your thinking process, instead of simply declaring that your conclusions are the only ones that are acceptable and others are idiots. Let's take me for example. It just so happens that I'm rethinking my position on interracial marriage (yes, really). I haven't reached any solid conclusion yet, but I'm not as sure of my position as I once was. My current uncertainty is based on a few things I learned in the past few years. First, Sapolky's excellent "Human Behavioral Biology" did show me how incredibly susceptible we are to hormones; how a tiny little change can have huge impacts in our daily life. The part on delaying gratification was also eye opening for me. Some people are wired in a way that makes it very difficult for them to refuse a cookie now in exchange for two cookies later. So it's not necessarily that you are making a greater effort; you might be born in a way that makes it easier for you for delay gratification. I would recommend the complete playlist to anyone here. It is simply fascinating. [VIDEO] Second, the psychology professor Jordan B Peterson ( [LINK] ) teaches how an amazing predictor of success IQ is. You can see a little of what he has to say here: [LINK] Then I learned how IQ is highly correlated to genetics (from 0.75 to 0.8). By the way, for you parents, this means that you might not be as good tut

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@yesenadam2017 · in “Ask HN: Best books you read in 2017?”

Try Sapolsky's incredible 25-or-so-part online lectures on Biology of Human Behavior. A great lecturer on a most fascinating subject, it's accessible to a general audience. Covers the topic on all different levels, scales, approaches, from evolutionary psychology to the minutiae of brains and genes, with a lot of stories about the discoveries and researchers involved, and jokes, he's a funny guy. Best course I've ever done. Part 1: [VIDEO]

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@jmcqk62019 · in “Online activists are silencing us, scientists say”

If people are interested in exploring this topic, I would highly recommend Robert Sapolsky's course "Human Behavioral Biology" from stanford. The lectures are all available on YouTube and I learned so much from them: [VIDEO]

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@mrdoops2019 · in “Ask HN: How do you keep your programming motivation up?”

Trial and error as a programmer dealing with depression and anxiety accounts for a lot, but for resources I'd point you to Robert Sapolsky's lectures on Behavioral Biology (here: [VIDEO] ). Sapolsky's lectures are great for getting a Biology perspective to how human's operate. Jordan Peterson's has lectures on Personality (here: [LINK] ) which are also great and echo similar ideas from a Psychology perspective.

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@i2shar2019 · in “What men eat and drink may affect their babies’ health”

Also, the initial few lectures from Robert Sapolsky's lecture series[1] were an eyeopener for me. The exact mechanism of how environment affects epigenetics (transcription factors, etc.) was really fascinating! [1] [VIDEO]

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@totetsu2020 · in “Patrick Collison's Questions”

on "What's the right way to understand and model personality?" Personality is an outdated concept, personality types triply so. There is no fundamental stability of personality, just behavior context. Christian Miller - The character gap [LINK] [LINK] Robert Sapolsky - Introduction to Human Behavioral Biology [VIDEO]

@eastendguy2021 · in “Dear Mom and Dad, please stick with me (2020)”

This blog post is low quality marketing/SEO copy and paste. But the topic itself is very interesting. High-quality lecture series around the same topic (Human Behavioral Biology) [VIDEO]

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@colechristensen2022 · in “Reducing inequality can reverse political polarisation: study”

Many studies show chemical markers of these things, it's not just psychological behavioral studies (which are often quite dubious) but easily measurable outcomes. If you're thinking quite narrowly, your point seems reasonable, it's probably below significance to say your neighbor with the bigger house and nicer car is "healthier", but this is a lot different than them vs the family that sometimes skips meals because they can't afford to put food on the table with the knowledge that a lost job will mean homelessness. Good arguments are resources by Robert Sapolsky [LINK] or [VIDEO] or any of the books he has published (many have significantly overlapping content)

@belorn2022 · in ““Women are wonderful” effect”

Question like those is why researchers goes to animal observations. Easier to make conclusions without introducing too much cultural assumptions. In the jungle people find a dead young female baboon. She is apparently dead from starvation, so we hastily conclude it was natural causes. The researcher however who observed the flock gives a different explanation. The young female was healthy just a few weeks ago, but after joining the flock she got continuously bitten and scratched by other females whenever she went to eat or tried to sleep. After weeks of constant stress, lack of sleep and food she died. In contrast we might find a dead young male baboon clearly beaten to death. They joined the same flock recently and after a large fight over dominance the young male acquired injuries and died. Which of the two cases displayed more capacity for violence, brutality or aggressiveness? Is a brawl better or worse than cold calculated murder? > why did we come to have a culture that fears men Very good question. One likely answer is that we have a culture that reward men who commit violence in the right context. Why do men get rewarded for violence? There are many contradicting theories and books on that subject. Are humans inherently violent or peaceful? Is society holding back the savage beast or is cooperation the human default behavior? A lot of questions, a lot of research, a lot of theories. If you want to dig down into those question there are good books and other sources on

@sitkack2022 · in “Zebras Hate You for No Reason: Why Amdahl's Law Is Misleading in a World of Cats”

> Stanford professor Robert Sapolsky gave the opening lecture of the course entitled Human Behavioral Biology and explains the basic premise of the course and how he aims to avoid categorical thinking. [VIDEO]

@nomilk2023 · in “Ask HN: What's the best lecture series you've ever seen?”

Bob Sapolsky's Stanford Biology lecture series is... amazing. A rare combination of both extremely important and extremely interesting. If you watch just 3 or 4 minutes, you'll struggle to stop watching. [VIDEO]

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@zer00eyz2023 · in “Psychedelic brew ayahuasca’s profound impact revealed in brain scans”

> - I got more confrontational which almost got me into fights, but also got me laid These systems are likely deeply tangled up in your biology. Robert Sapolsky has a Stanford lecture series on this: [VIDEO] Well worth a watch!

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@culi2023 · in “Harvard: The Effects of Noise on Health”

for anyone unaware, this is a book by Stanford professor Robert Sapolsky: [LINK] The book is about stress and the impact of glucocorticoids on the body. The chemical stress response used in "the wild" by animals is actually the same as the stress response we have when worrying about losing our job, not being able to complete a paper for school, dealing with poverty, etc. It's a partial explanation for why modern humans have so many chronic diseases that are rarely seen in other animals (or even archeological/anthropological evidence of non-industrial societies but he doesn't really go there much in the book) I also highly recommend Sapolsky's Human Behavior Biology course which he taught for Stanford but published on YouTube: [VIDEO]

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@philipov2024 · in “Intelligence is not like height”

Anyone who wants to look at heritability numbers should make sure to watch these lectures first. Heritability is often a misleading stat, because it has an unintuitive definition. Sapolskiy covers common failings of heritability numbers, as well as confounding factors for twin studies. [LINK] [LINK] Full Lectures: [VIDEO] An example of how non-intuitive heritability is: whether a person wears earrings or not would be a heritable trait if we're looking at mid-20th century America, because the variability is entirely explained by whether you're male or female. Heritability is unable to identify whether a trait is caused by genetics, only whether the variation correlates with genetics.

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@gobdovan2026 · in “The Spread of Christianity Animated”

It's even more amazing when you think about Christianity not as a clear category, but as a cloud of practices, beliefs and institutions in a broader family of religious patterns. Mircea Eliade asks how Christianity reinterpreted sacred history, myth, salvation. What does Christianity do with motifs older than itself, such as paradise, rebirth, sacrifice? In A History of Religious Ideas [0], he treats the emergence and development of Christianity, including Judaism, early Christianity, Gnosticism, late antiquity, medieval religious forms and also how it interacted with other traditions. I think it complements quite nicely the geographical spread of Christianity by also clarifying what kind of transformations of religious symbols make it recognisable as Christianity across such different contexts. There's also "Darwin's Cathedral" [1] that analyses religion as group-organizing system, with a focus on Calvinism. Didn't go through it, but seems relevant. It was recommended by Robert Sapolsky in his Introduction to Human Behavioral Biology lecture series [2]. [0] A History of Religious Ideas - Mircea Eliade [1] Darwin's Cathedral - David Sloan Wilson [2] [VIDEO]