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Sex at Dawn: The Prehistoric Origins of Modern Sexuality

4.02  ·  Rating details ·  20,334 ratings  ·  2,084 reviews
Since Darwin's day, we've been told that sexual monogamy comes naturally to our species. Mainstream science--as well as religious and cultural institutions--has maintained that men and women evolved in families in which a man's possessions and protection were exchanged for a woman's fertility and fidelity. But this narrative is collapsing. Fewer and fewer couples are getti ...more
Hardcover, 400 pages
Published June 29th 2010 by Harper
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El They is very little mention of any LGBTQIA+/SAGA sexuality or gender identities... It is primarily focused on cis-het sexual behavior.
Taiki Fujiwara it is rather about the origin and meaning of sex - sexual intercourse (not how to do sex)

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Christopher Ryan
Jan 03, 2011 rated it it was amazing  ·  (Review from the author)
Well, I wrote the damned thing. Can I give myself five stars? Everybody thinks their baby is beautiful, right?
A popular science book for people who hate science, Sex at Dawn manages to combine weak arguments with a prose style of such overbearing condescension that I had to grit my teeth to get through it. Everything is couched in terms of facile jokiness or, even worse, of coy euphemism, so that we have the ghastly prospect of a supposedly serious book about sexuality that can talk about a ‘human female's naughty bits’.

The basic argument is that evolutionary psychologists, anthropologists and p
Dec 29, 2010 rated it it was amazing
Hey! Hey, baby, baby, waitwaitwaitwait. Wait. Wait! Baby, don't... don't freak out

Okay, okay, I know what this looks like, but I can explain! Quiet, Chad, let me handle this. I can explain! I'm just - please, stop crying and listen - I'm just fulfilling my evolutionary heritage and helping to cement social bonds with... um... the pizza boy, but that'snotthepoint!! That's
not the point! Look, before you do anything, y'know, drastic, you just need to read this book....

Humans are really good at f
Jul 10, 2010 rated it liked it
Recommended to Valerie by: Dan Savage
A long time ago, in a galaxy far away, I was an anthropology major at UCSC. Although I wanted to specialize in physical anthropology, I did quite a bit of classwork in cultural. One of the things that always fascinated me was fictitious kin. The idea of creating a network of ties to promote sharing among small groups. Church congregations and the scooby gang of Joss Whedon's Buffy are examples of this. I found the author's description of several of these types of kinship networks based on common ...more

This is one of those paradigm-shifting books that pretty much changes your belief system. Having read Robin Baker's Sperm Wars and absorbing its grim interpretation of human sexuality, this book, Sex at Dawn came as a pleasant and generally kick-ass surprise.

With abundance of humor and compelling narrative, the authors posit that human beings, like their primate cousins, originally engaged in multiple mating for most of their existence on earth before the advent of agr
Feb 07, 2011 rated it it was amazing
I loved this book, but to be honest I have nowhere near the education to be able to evaluate the validity of the arguments presented in the book. I have seen grumblings here and there about the book, mostly from religious people who this book will understandably offend.

One of the main messages of the book is that monogamy is not natural to either men or women.

The authors are two researchers and psychologists, both married.

Despite being academics and approachin
Ahmad Sharabiani
Sex at Dawn: The Prehistoric Origins of Modern Sexuality, Christopher Ryan
Sex at Dawn: The Prehistoric Origins of Modern Sexuality, is a 2010 book about the evolution of monogamy in humans and human mating systems by Christopher Ryan and Cacilda Jethá. In opposition to what the authors see as the "standard narrative" of human sexual evolution, they contend that having multiple sexual partners was common and accepted in the environment of evolutionary adaptedness. The authors contend that m
Brendan Shea
Feb 11, 2013 rated it did not like it
I rarely stop reading books before I'm done (and I've read a lot of pretty bad books as a result!), but I think I will with this one. The book has two serious problems: first, it misrepresents (or maybe misunderstands?) the standard model of human sexuality from ev. biology. Perhaps because they are so focused on the most extreme form of ev. psych, they repeatedly oversimplify things, and then accuse various authors (e.g., Darwin) of defending such oversimplified theories because of sexism. Seco ...more
Aug 05, 2010 rated it did not like it
Overrated, mostly unfunny but overly glib, using the same bad logic he accuses the monogamy pushers of, this book which is basically shilling for open relationships vis-a-vis evolutionary psychology is intellectually dishonest AND irritating, which is quite a feat. I can't believe Dan Savage pushed this crap. There are better arguments for new takes on monogamy, open relationships, and polyamory out there - we don't need to cloak them in bad, gender-essentialist "science".
Myke Cole
Dec 18, 2017 rated it liked it
Look, the writers of this intensely popular book don't need my help, and certainly won't be bothered by my disapproval, so I offer my opinion here mostly in the interest of hearing myself talk.

This is a really well written book that does a great job of confronting titillating issues head on, with honesty and humor and giving us an unflinching look at our sexual history - by which I really mean our primatological history - a look at how we boinked in our pre-agricultural past.

From a
Mar 29, 2013 rated it did not like it  ·  review of another edition
I feel completely cheated...

This review is directed more towards people who have already read Sex at Dawn, and to the authors. But hopefully this will be of use to new readers as well.

I'll start by saying that when I first read Sex at Dawn I was blown away. This book completely changed my view of monogamy, sex, and relationships. It sparked this new openness and acceptance in me, and I will say had a very positive impact on my relationship. I thought here was the book tha
Aug 25, 2010 rated it it was amazing  ·  review of another edition
This book makes one depressed about the human race from agriculture on. However, it kind of awesomely doesn't make me feel like a slut, proving (through science!) how our anatomy developed and how we, as humans, were made to have sex with many different people. Sometimes all at once. With chocolate sauce. Kidding about the chocolate sauce.

Really, the book goes over our closest relatives, and then discusses common beliefs about the human race, and proves or disproves some of those bel
Jul 01, 2018 rated it liked it  ·  review of another edition
Shelves: 2018, reviewed
My friend found this book intriguing. Couldn’t put it down, he says. I could’ve probably put it down, but I promised him I would read it and read it I did. In Sex at Dawn, Christopher Ryan lays down a slew of what he believes to be persuasive arguments for our prehistoric ancestors being sexually promiscuous. Considering that we are most closely related to the bonobo (a ‘pygmy chimp’) in the evolutionary sense, he draws parallels between the bonobo’s behavior and anatomical particularities to those of hum ...more
Nov 16, 2010 rated it liked it
Interesting read and lots to think about.

What I loved:
-Less patriarchal approach to science/sexuality/evolution.
-Chapters on bonobos--so important.
-Chapters on sexuality as a bonding tool.

What I didn't love:
-While the argument that culture can poison scientific fact is a valid and awesome one, to rest your entire book on it is problematic. Who's to say that these hypothesis aren't subject to the same corruption? Of course, that's never addressed. I
Althea Ann
Oct 27, 2012 rated it liked it
This review has been hidden because it contains spoilers. To view it, click here.
Nov 05, 2011 rated it really liked it
My girlfriend and I had one of those gradual comings-together where you're going along fine, life is good, and then you look up one day and . . . wait . . . hang on . . . you're dating that person you thought you were just sleeping with. (For the record, some of us *cough* figured this out much sooner than others of us.) When it happens like that, it's hard to figure out what "counts," if you care about that sort of thing -- anniversaries, firsts, all those markers of 'real relationshipness.' Lu ...more
May 19, 2014 rated it it was ok  ·  review of another edition
A tragic disappointment of a book, Sex at Dawn attempts to sell pseudoscience as the real deal, and it fails. The first 100 pages intrigued me because of how Christopher Ryan and Cacilda Jetha blended evolutionary psychology, history, and mythology to discuss human sexual relationships. But then they began to make illogical conclusions based on circumstantial and underdeveloped evidence. They critique Richard Dawkins, Matt Ridley, and other reputable scientists, and they try to mold their straw man ...more
Aug 05, 2012 rated it it was amazing
Honestly, this is such a great book. In my personal opinion, this is a book everybody should read. It's a really great eye opener in regards to human nature that counteracts the general tendency of people in America to idealize relationships and monogamy in what can be seen as a relatively unnatural way. I do realize that as human beings we are not only potentially logical beings with the ability to reason but also very emotional ones as well and that what we happen to know factually or scientif ...more
Jan 14, 2011 rated it liked it
When Sex at Dawn first came out it received a bunch of ecstatic reviews, but I had my doubts. It sounded like more made-up, tenuously supported evolutionary psychology BS that just happened to be more to my (and the reviewers') liking than the standard evo-psych sexuality stories. My expectations were low.

Turns out 85% of the book is focused explicitly on debunking and mocking evo-psych theories. "Asking whether our species is naturally peaceful or warlike, generous or possessive, fr
Nancy Rector
Aug 30, 2010 rated it it was amazing  ·  review of another edition
Phenomenal mind opening book about the true origins of our societies typical view of sex and monogamy. Also delves into the topics of war and jealousy and if those are indeed innate traits of humans. The facts show they are not. As with many beliefs that are just mindlessly accepted by so many people this points out that many things are not what they seem. And that we as a people need to have the courage and strength to think for ourselves and to continually question and learn for ourselves.

Nhu Khue
May 21, 2019 rated it really liked it  ·  review of another edition
Shelves: non-fiction
Hồi lâu mình nói chuyện với một bạn nam về chuyện tại sao phong trào anti-vaccination lại lan rộng như vậy dù bằng chứng khoa học không ủng hộ và vì sao đa số những người ủng hộ phong trào đó là phụ nữ, thì bạn đó bảo vì phụ nữ không phải là một loài có tư duy logic và lý trí với một thái độ mà mình chỉ muốn đấm cho phát. Nếu mà mình dùng đến lý trí thì chắc mình đã đấm cho phát thật chứ không đùa.

Không nói chuyện vaccinate đúng sai thế nào. Mình nói chuyện này chỉ là vì nhiều lúc thấy mình sốn
Oct 05, 2011 rated it did not like it
Now, I agree with the fundamental point they were making here - humans evolved to use sex socially and with many partners, not for monogamy - but their use of science was...shoddy, and high school level writing at best. They at times (oh hell, all the time) dipped back into stereotype to support their claims and to justify their choices of topic. I frequently found myself reading sections of this aloud to my roommates so we could rip it apart together - and that was pretty fun. They're depressin ...more
Nguyễn Quang Vũ
Nói trước luôn: Đây không phải sách dạy chịch. Nếu tìm sách dạy chịch thì Kamasutra là một gợi ý tốt (mặc dù không phải là tốt nhất). Đây quả là tác phẩm gây bối rối nhất với mình cho đến bây giờ. Ryan và Jethá (vốn lại là một cặp vợ chồng) đã đưa ra những luận điểm làm bất kể ai cũng nghi ngờ về tính đúng đắn của quy định một vợ một chồng (thành văn và bất thành văn) trong xã hội hiện đại. Đây có phải là một chế độ thực sự khoa học, là bước tiến hóa tất yếu của loài người văn minh (vốn là một l ...more
Books on sex are a dime a dozen these days. From tomes on how to create a more spiritual union or bring more spice to your marriage through the cunning use of super glue, paperclips, and a rubber band (the well-named MacGuyver technique) to how to give your lover earth-shattering orgasms through locating some mythical pressure point, this genre has risen to be one of the pillars of the self-help section of a bookstore. It's gotten so that this subgenre receives even less respect (and deservedly ...more
Jan 14, 2012 rated it it was ok
Shelves: sciences, sexology
A popularizer's polemic against evolutionary psychology vis-a-vis the doctrine and institution of monogamy. The book is well-humored, and the prose reads well.

The broad strokes of the argument are difficult to dispute, and I wouldn't want to dispute them. Monogamy earned this ass-kicking--and it is an ass-kicking, a true shellacking, considering the data marshalled in support, as well as the motion-for-summary-judgment style of pointing out a lack of support for the opponent's essential allegat
Kumar McMillan
Oct 23, 2010 rated it it was amazing
This is a fascinating and well researched view into how humans became the highly sexual creatures we are today. It flips the outdated and poorly proven Hobbes theory--that we were brutish, impoverished, war torn prehistoric animals--on its head. Instead, it offers compelling evidence and astute observations that for 90% of our 2.5 million years on Earth, humans basically had enjoyable sex with each other all day (multiple partners) and ate nutritious food from the earth without war and without m ...more
Dar vieną puslapį
Tik neleiskite pavadinimui Jūsų suklaidinti. Nėra ši knyga kažkoks sekso vadovėlis. Tai pirma mano skaityta knyga evoliucinės psichologijos tema. Evoliucinė psichologija remiasi darvinistiniu požiūriu (na žinot, kad žmogus kilo iš beždžionės) ir tyrinėja žmogaus elgseną, protą bei mąstymą. Šiaip laaabai įdomu. Tikrai.

"Sekso aušra" - tai tarsi daugybės mokslinių straipsnių ir tyrimų sankaupa. Jokiais būdais ne nuobodi ir sausa. Knygos autoriai žaismingai, lengvai ir su gera humoro doz
Laura Kelley
Jul 08, 2010 rated it it was amazing
Shelves: non-fiction
This book is not an attack on monogamy. It is a well-researched and well-written exploration of how modern sexuality has evolved. This is a must read for anyone in a relationship or would one day like to be in a relationship.

The premise is simple. We have been socialized to believe that when you love someone monogomy should come naturally and easily. However, the facts bear out a different reality. I have seen statistics that indicate 80% of married men report cheating on their wives and 50% of
Jun 24, 2011 rated it did not like it
From the very start, the authors set the stage of this standard (and wrong) view of human sexual evolution and sexuality and their radical alternative. Unfortunately, although they manage to refute some commonly held misconceptions, none of these startling revalations seem like they would be a surprise to anyone in the fields of primatology, anthropology, evolutionary biology, evolutionary psychology, etc. They also do very little to present a positive argument although to be quite honest by the ...more
Jan 16, 2012 rated it liked it
Shelves: psychology
I heard Ryan interviewed on the podcast "Sex Nerd Sandra", was intrigued by his novel ideas, and decided to pick up the book. The overarching argument is that men and women were not historically monogamous the way society and many scientists claim. They back up this with physical and behavioral evidence from our close cousins, the chimp and bonobo, and from the information we have about prehistoric human societies and existing hunter-gatherers.

The authors are also somewhat avowed neo-Rousseauns
Sep 09, 2010 rated it it was amazing
Agriculture, am I right?

I think this was a paradigm shifter for me. While the book ostensibly sets out to prove that we are not meant to be monogamous like gibbons (the only primates to live in nuclear family structures) but rather live in smallish groups like bonobos (and I think it presents its case very well), the real meat of the book for me was how far we've fallen from the original Eden as foragers.

The Fall, as such, was the turn to agriculture. God himself says it was a curse
It was difficult to take this book as seriously because of the snarky little tone this book has—which honestly needn’t be there. I realize this is coming from someone who already thinks of science as fascinating and doesn’t need the lighter tone to keep things interesting but honestly, this book has too much attitude. It lacks a level of professionalism that, if I’m going to read an informative book about the science of sex, needs.

Part of why I bring this is up is also because the only other
Katherine Riegel
May 28, 2013 rated it it was amazing
Shelves: nonfiction
Of course the premise of this book will be controversial, as it questions many religious systems and the values of many non-religious people as well. It asks us to re-think aspects of culture that we have all unquestioningly accepted--one of which is a huge basis of literary works, movies and more: the concept of the One True Love (and the related concepts of jealousy and fidelity). But even if you don't agree with all of the authors' assertions, this book has what is, for me, an optimistic view ...more
23rd book for 2017.

A polemic against the Standard Model of Human Sexual Behavior. Arguing instead for a happy polyamorist pre-Eden existence before the deadening effects of the Agricultural Revolution kicked us into monogamous patriarchy.

Not sure how to judge this book. The writing style is irritating at times, and there is a sense, even without knowing the literature, that there is a fair amount of cherry picking going on. The central argument goes off the rails near the end when p
020819 later addition: on reflection i am uncertain how new or well-argued are certain of the evolutionary theses herein examined. it is probably just that i am not serious student, read, taught, and have no idea of current theories of paleontology sexology... that said, if you can get past his joking tone there is good stuff here...

230719: for academic interests but mostly popular in writing. not as long, dense, as page count, as about 100 pages footnotes. i have not followed many b
Jun 03, 2017 rated it it was ok
This book is idiotic. And I don't say this because they are advocating open marriages. I knew that going in and I was interested in the idea (I decided to read it after reading a NYTs article about open marriages so I was intrigued). No, it's idiotic because they are cherry picking historical data, they don't deal with any serious alternative theories, and then they present their case as though you're stupid if you don't believe it. There were some really interesting insights in here about human ...more
Sep 17, 2010 rated it did not like it
Sex at Dawn certainly had some compelling anecdotes and it successfully turns your dreams toward bonobo utopia, but the plot holes were gaping. It is all fine and well to talk up the benefits of small societies in prehistory, but the authors seem to be suggesting that we should undo our heavily ingrained global community for the sake of promiscuity.

Not to mention, what is a book about social sexual health that does not address homosexuality, STDs, misogyny, and birth control? In one chap
What Sex at Dawn does well is challenge ideas about traditional relationships and the nature of human sexuality (many of these long established beliefs are obviously untrue and grounded in misogyny or religion and deserve to be overturned). However much of the rationale seems loosely argued (particularly when referring to hunter-gatherer societies), and sometimes misleading or disingenuous (when referring to works of other writers who I have also read). He paints a very idyllic and utopian view of t ...more
Jul 11, 2010 rated it liked it
This is a topic that modern society has been wrestling with for ages. Well packaged in an easy to read book, Christopher Ryan presents a large amount of experimental, anatomical, and anthropological studies with a logical narrative of the evolution of human sexuality. He deals rather fairly with monogamy (remarking that the alternatives are not for everyone), even though it is clear that the bulk of the data is pointing toward a different human nature.

Although the topic is relevant to modern so
تمام حرف نویسنده در این کتاب این است که "تک همسری" الگوی جهان شمول انسانها نبوده است و نگاه هابز به زندگی انسان ماقبل تاریخ که بر مبنای آن جوامع امروزی شکل گرفته اند اشتباه بوده است.
نویسنده بشدت سوگیری در بیان شواهد و مدارک دارد(بافرض انکه بپذیریم مدارک و شواهدی از دو میلیون سال پیش اصلا بتواند در دسترس باشد!)
درکل کتابی نیست که ارزش خواندن داشته باشد بیشتر بنظر میرسد دعوا و کلکل انسان شناس های مخالف و موافق " تک همسری انسان" است،و خواننده باید یک طرف دعوا را بگیرد.
به نظر من هما
Yama Rahyar
Jun 09, 2012 rated it it was ok
I'm getting pretty tired of these academ-ish books whose authors reinterpret the origins of our species to validate their own contemporaneous lifestyle choices. Early humans were avid marathon runners, or gluten-free raw foodies, or red-blooded carnivores, or vegans, or proto-communists, or proto-capitalists, or proto-surrealist landscape artists, or, or, or. In this book, written by practitioners of polyamory, early humans were - wait for it - wait for it - practitioners of polyamory. I'm going ...more
Dec 04, 2012 rated it it was ok
This book... UGH. It's starts off talking about bonobos bonobos bonobos! The forgotten cousin who boinks all the time in a free-loving society! And of which there seems to be little actual study! It's great to point out that our genetic closeness to this group has been overlooked, but I would like some more scientific evidence cited here, especially before their exclusion in accounts of human sexuality gets mentioned over and over and over again. Also, maybe all those studies that fail to mentio ...more
'm having a heard time getting into the content of this book because I'm so fixated on the style of writing. The whole idea of science writing for the layman (laywoman? layperson?) is interesting to me. The popularity of this genre' probably says something about our society right now - I don't know what, but probably something - ?

And I admit there has been more than one time when I'm going along with the book when I'm thrown for a loop by what feels like a condescending or overly did
For more specific thoughts, see the (short) thread under my first status update.

For basic impressions, read on.

This is... a really cool book. In that it made me think and wonder and question myself and bug my eyes at how obvious and logical some of what the authors talked about is.
I'm not a scholar or a regular non-fiction reader and I know fuck-all about anthropology, sociology and psychosexuality, but I'm a very critical reader, and what I can tell you is that Sex
Ok, I haven't finished this book, and maybe never will, but I'm going to start writing a review anyway. It's really slow going because it seems like every other page I have to stop reading and write down something they said that I'm skeptical about.

The book in a nutshell: The natural state of humanity is an idyllic communist utopia where we just pick up food off the ground, share everything, including sexual partners, never fight, and live forever. Then some asshole invented agricult
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“And yet, despite repeated assurances that women aren't particularly sexual creatures, in cultures around the world men have gone to extraordinary lengths to control female libido: female genital mutilation, head-to-toe chadors, medieval witch burnings, chastity belts, suffocating corsets, muttered insults about "insatiable" whores, pathologizing, paternalistic medical diagnoses of nymphomania or hysteria, the debilitating scorn heaped on any female who chooses to be generous with her sexuality...all parts of a worldwide campaign to keep the supposedly low-key female libido under control. Why the electrified high-security razor-wire fence to contain a kitty-cat?” 57 likes
“Societies in which women have lots of autonomy and authority tend to be decidedly male-friendly, relaxed, tolerant, and plenty sexy. Got that, fellas? If you're unhappy at the amount of sexual opportunity in your life, don't blame the women. Instead, make sure they have equal access to power, wealth and status. Then watch what happens.” 46 likes
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