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Evolution's Rainbow: Diversity, Gender, and Sexuality in Nature and People (Englisch) Taschenbuch – 1. April 2009

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"A fascinating discussion about diversity in gender and sexuality in [the] living world."--Mammalia


In this innovative celebration of diversity and affirmation of individuality in animals and humans, Joan Roughgarden challenges accepted wisdom about gender identity and sexual orientation. A distinguished evolutionary biologist, Roughgarden takes on the medical establishment, the Bible, social science - and even Darwin himself. She leads the reader through a fascinating discussion of diversity in gender and sexuality among fish, reptiles, amphibians, birds, and mammals, including primates. "Evolution's Rainbow" explains how this diversity develops from the action of genes and hormones and how people come to differ from each other in all aspects of body and behavior. Roughgarden reconstructs primary science in light of feminist, gay, and transgender criticism and redefines our understanding of sex, gender, and sexuality. A new preface shows how this witty, playful, and daring book has revolutionized our understanding of sexuality.

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Format: Taschenbuch
Dieses Buch gibt einen guten Einblick in die Vielfalt des Lebens rund um Geschlechter und Sexualität. Es überwindet damit kulturelle Scheuklappen, welche sonst oft den Blick vernebeln.
Das Buch ist ehrlich und gut geschrieben. Es zeigt, das sich die Natur nicht an die Wunschvorstellungen der Gesellschaft hält. Dadurch räumt mit einigen weit verbreiteten Vorurteilen auf.
Das Buch ist für jeden zu empfehlen: der sich für die Evolution interessiert oder wissen will, was die natürlichen Grundlagen der Geschlechtervielfalt sind.
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4.0 von 5 Sternen A Curious but Exhilarating Romp through Evolutionary Biology 22. Juni 2009
Von Herbert Gintis - Veröffentlicht auf Amazon.com
Format: Taschenbuch Verifizierter Kauf
This is an exhilarating and yet strange book, written by a passionate and highly talented scientist. The book is exhilarating because it weaves personal experience and academic research into a highly politicized plea for tolerance of, indeed affection for, diversity of sexual expression. The book is strange because the object of attack, Darwinian sexual selection theory, is not a real political enemy at all. I dare say that a huge majority of evolutionary biologists both accept Darwin's theory in some form, yet also accept homosexuality, same-sex marriage, and sex change (Roughgarden reports elsewhere that when she went to Condoleezza Rice, Provost at her home institution, Stanford University, to ask if she could keep her job as tenured professor after she had a sex change operation, Rice was totally supportive). Conversely, those who are intolerant of sexual diversity are most likely to be Creationists for whom Darwinism is as close to the Devil as homosexuality. Roughgarden, it is clear, chooses her battles emotionally, not strategically.

Roughgarden rejects Darwin's theory of sexual selection because (a) it is incorrect, and (b) it perpetrates intolerance of human sexual diversity. It is wrong because it portrays sex in animals as highly uniform, with females investing heavily in each gamete (eggs are very large) and being coy and conservative concerning mating, and males being promiscuous and investing very little in gametes (sperm being exceedingly tiny). It is perpetrates intolerance because it promotes the myth that divergence from the sexual stereotype is abnormal and pathological.

Roughgarden has been accused of committing the "naturalistic fallacy," which says that "was is, is good." In this case, it is easy to think that Roughgarden claims that because there is sexual diversity in nature, and because there is homosexuality and gender change in nature, therefore it is natural that humans are sexually diverse, and those that oppose diversity are enemies of the nature expression of sexuality. This argument is of course fatally flawed. It is easy to find species in which adultery is common, species in which a new male mate kills the young of the previous male, species in which individuals abandon their young with high probability, species in which females generally mate with all the males in the group, and species in which individuals eat each other's feces. This does not make adultery, killing and abandoning offspring, or sharing feces at dinnertime, acceptable practice for humans. In fact, Roughgarden does not commit the naturalistic fallacy. Her argument is that since Victorian times we have lived in a culture that is hostile to sexual diversity, that this is a morally bad cultural bias, and it both oppresses gays, lesbians, and transsexuals today, and accounts for the poor interpretation of sexual dynamics in Darwinian theory. Moreover, she argues that it is illegitimate to use the argument that these diverse sexual practices are "against nature" as a valid critique, just as criticisms of adultery cannot be based on the absence or rarity of "adultery" in other species.

About 80% of this book is a pure pleasure to read, as well as being extremely informative concerning the variety of sexual behaviors in the animal world and a wide variety of human cultures through time and space. Evolution's Rainbow is also a good source of instruction in evolutionary biology as long as "Darwin's theory of sexual selection" is not in question.

The basic argument of the book is that sex is basically cooperative, not competitive and conflictive, as is presented in standard evolutionary theory. I am not sympathetic to this argument. I learned standard evolutionary biology, and accepted both the widespread validity of the coy female/promiscuous male theory without (a) believing that it is universally valid for the animal world, or (b) at all valid for humans. Moreover, I learned from modern biological theory that cooperation is just as important as competition and conflict. Indeed, the modern biological interpretation of the increase in biological complexity since the first bacteria is due to the synergy of cooperation among units of one level of complexity leading to the emergence of a new level of complexity. This process is inherently cooperative, but the emergence of a new level depends on suppressing conflict among individuals on the older level. All of biological life, I learned and I still believe, is an interaction of cooperation and conflict. This include relations between (among?) the sexes in reproduction and nurturing of offspring.

It is not impossible to treat Roughgarden's "counterexamples" as merely oddities or simple exceptions to the rule. Certainly this is what I thought before I read this book. She has convinced me that this is a poor way to think of sexual diversity in the animal world. She has also convinced me that there may be subtle but important forms of sociality in animals to which one is blind if one interprets everything through the lens of Darwin's version of sexual selection. She has not proved the case even in a single species, but she certainly raises plausible alternatives to traditional explanations.

A major issue is treated confusedly in the book, and I have found it to be perpetrated in even the most erudite reviews of the book. Darwin's theory of male decoration was what has been called the "sexy male" theory, as developed analytically by Ronald Fisher and others. This theory says that through random drift, females come to prefer some fitness-neutral aspects of the male, and the female will both mate preferentially with males having this attribute and pass the gene preferring this attribute on to her offspring. There is thus "runaway sexual selection" which is fitness-reducing for the species since it is costly to produce the trait for the male, and costly to be choosy over the trait for the female. As far as I can tell, and I have studied this theory closely, it has absolutely no support either theoretically or empirically. It is just a dead theory, despite its being a favorite of evolutionary psychology--a field dominated by researchers who cannot understand the math and do not study non-humans, but who are great popularizers and appear to have convinced a gullible public of its importance.

The correct version of the Darwinian sexual selection theory is the "costly signaling" approach, which says that decorated males are likely to have "good genes," and hence to increase the fitness of the female's offspring. Roughgarden implicitly accepts the "good genes" approach without argument, merely complaining that females care about the total contribution of the male, not just the quality of the genes passed on to the offspring. However, her general critique of the standard account of sexual dynamics in Darwinian evolutionary theory is misguided. Roughgarden gives no proof that the "good genes" theory is incorrect, or that her "social selection" theory is universally, or even frequently, superior. Her alternatives are creative and interesting, such her suggestion that male decoration is a signal of general prosociality. But it is certainly not proved. Moreover, her claim that the standard signaling theory behind the good genes model is based on generalized "deceit" perpetrated by the male is just wrong. The first principle of signaling theory is that signals that persist over time must be on balance veridical, or else the receiver would increase fitness by ignoring the signal, so some mutant that ignores the signal will eventually emerge and will eventually displace the gullible signal receivers.

Roughgarden rejects the "good genes" theory on grounds that females care about their mates' total contribution to the social resources of the group, not just the genetic quality of the male. But, what determines such total contribution if not the genetic quality of the male? One can hypothesize that males have certain personal characteristics that are not incorporated in its genome, but for most species, this is not at all plausible.

I suspect that Roughgarden's research will broaden and enrich existing models of strategic sexual interaction rather than replace them. Despite Roughgarden's insistence that her ideas are an alternative to Darwin's, I find the two quite compatible, and I suspect Darwin, were he still around, would agree.

Another peculiarity of the book is that Roughgarden treats all deviations of sexuality from the standard coy female/promiscuous male model as adaptations that improve the fitness of the individuals involved. I believe generally that costly species' characteristics that required many cooperative mutations to occur are almost certain to be adaptations. But the huge variety of sexual practices and their close association with speciation makes it likely that much of this variety is random drift rather than an adaptation. In particular, it does not follow from "evolution's rainbow" that extensive sexual diversity is adaptive either for the individual or the group. Moreover, who cares? We can accept sexual diversity for its own sake, not because it arose as an adaption or is serves some adaptive purpose in modern society.

Many researchers, even those with strong moral incentives to do scientific research, are put off by how intimately Roughgarden links her moral principles to her scientific theories. This certainly makes me uncomfortable. I can work with other research intimately for years without finding out, or being interested in the least in, their political or moral positions. No one knows from my published work on human cooperation and conflict what my political and ethical view are, and I am happy to keep it that way. On the other hand, Roughgarden's personal commitment is refreshing and is an attractive aspect of this book
74 von 94 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Clouded by Strong Biases 21. September 2006
Von Peter McCluskey - Veröffentlicht auf Amazon.com
Format: Taschenbuch
This book provides some good descriptions of sexual and gender diversity in nature and in a variety of human cultures, and makes a number of valid criticisms of biases against diversity in the scientific community and in society at large.

Many of her attempts to criticize sexual selection theory are plausible criticisms of beliefs that don't have much connection to sexual selection theory (e.g. the belief that all sexually reproducing organisms fall into one of two gender stereotypes).

Her more direct attacks on the theory amount to claiming that "almost all diversity is good" and ignoring the arguments of sexual selection theorists who describe traits that appear to indicate reduced evolutionary fitness (see Geoffrey Miller's book The Mating Mind). She practically defines genetic defects out of existence. She tries to imply that biologists agree on her criteria for a "genetic defect", but her criteria require that a "trait be deleterious under all conditions" (I suspect most biologists would say "average" instead of "all"), and that it reduce fitness by at least 5 percent.

Her "alternative" theory, social selection, may have some value as a supplement to sexual selection theory, but I see no sign that it explains enough to replace sexual selection theory.

She sometimes talks as if she were trying to explain the evolution of homosexuality, but when doing so she is referring to bisexuality, and doesn't attempt to explain why an animal would be exclusively homosexual.

Her obsession with discrediting sexual selection comes from an exaggerated fear that the theory implies that most diversity is bad. This misrepresents sexual selection theory (which only says that some diversity represents a mix of traits with different fitnesses). It's also a symptom of her desire to treat natural as almost a synonym for good (she seems willing to hate diversity if it's created via genetic engineering).

She tries to imply that a number of traits (e.g. transsexualism) are more common than would be the case if they significantly reduced reproductive fitness, but her reasoning seems to depend on the assumption that those traits can only be caused by one possible mutation. But if there are multiple places in the genome where a mutation could produce the same trait, there's no obvious limit to how common a low-fitness trait could be.

Her policy recommendations are of very mixed quality. She wants the FDA to regulate surgical and behavioral therapies the way it regulates drugs, and claims that would stop doctors from "curing" nondiseases such as gender dysphoria. But she doesn't explain why she expects the FDA to be more tolerant of diversity than doctors. Instead, why not let the patient decide as much as possible whether to consider something a disease?
15 von 19 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen The gay science 2. Juni 2010
Von Ashtar Command - Veröffentlicht auf Amazon.com
Format: Gebundene Ausgabe
Joan Roughgarden's book "Evolution's Rainbow" is something of a disappointment.

It's badly edited, written in colloquial language, and covers a lot of topics not really relevant to the subject (such as Bible interpretation). There are other problems as well. The author protests strongly against expressions such as "transvestite snake", but has no problem calling male bighorn sheep "gay"! Of course, snakes are no more into transvestism than sheep are into the California gay subculture... (I think - I admit that the world would have been a more interesting place, had they been so.) On a somewhat stranger note, I noticed the author's strong aversion to asexually reproducing organisms. Aren't they a legitimate part of the rainbow?

This is all very unfortunate, since Roughgarden does mention many salient facts and makes interesting criticisms of the current paradigms.

One controversial point is her claim that "gender" is a biological category among humans. People who are transgendered really were "born that way". The usual position among anthropologists is, of course, that gender is a socially constructed category. Since Roughgarden believes otherwise, she can compare gender among humans with gender among animals and plants (a biological category).

In her polemic against androcentric sociobiology and its theory of "parental investment" (which supposedly makes Mother Nature patriarchal and sexist), the author points out that there are pipefish in the North Sea that reverse the sociobiological scenario. Among these fish, the *males* make the largest parental investment, while the females are aggressive, fight over the males and form dominance hierarchies. Ah, poor sociobiologists! Disconfirmed by Mother as usual. There is also an entertaining chapter on homosexual behaviour among animals, including birds where male-male couples occasionally raise the young. This "gay" behaviour has been observed among Black Swans, amongst others. Gay romance, anyone? There is even a lizard in Texas which is quite literally lesbian - all members of the species are female and reproduce asexually, but they nevertheless have non-reproductive sex!

Unfortunately, the badly edited chapters of this book sometimes make the arguments of the author quite weak. Thus, Roughgarden believes that gender bias may have led researchers to confuse cooperation among birds with brood parasitism. The male birds aren't really "cuckolded" at all, but involved in a complex system of reciprocal altruism within a larger colony. Perhaps they are, but this doesn't falsify Neo-Darwinism, which has no problem with *reciprocal* altruism. This isn't sufficiently emphasized by the author, making her proposals sound more earth-shattering than they really are. They may disprove one faction of Neo-Darwinists, but not Neo-Darwinism as such. As for the "female mimics", the author believes that they cannot really fool the other males, since they aren't perfect mimics to begin with. Maybe. And then, maybe not. For instance, most small passerines recognize their own eggs, but (weirdly) don't recognize their own chicks, which explains why cuckoo eggs mimic those of the host bird, while cuckoo chicks don't have to be mimics. Since song birds have surprisingly uneven cognitive abilities, this might go for other animals as well, and can explain the existence of "female mimics". Perhaps the mimics only need to mimic some key traits? Once again, a more extensive discussion seems called for.

The frankly worst chapter in the whole book is Joan Roughgarden's attempts to interpret the Bible as pro-gay. No, Joan, it isn't. Ruth and Naomi weren't lesbians. Paul wasn't warning gay couples of the dangers of sexually transmitted disease. When the Ethiopian eunuch was quoting Isaiah, he was pointing to a passage all Christians believe is a prophecy about Jesus. He wasn't calling for transgendered activism against the powers that be! Ur-Christianity may have had some interesting ideas, but they certainly weren't pro-gay. Incidentally, the Ethiopian eunuch was Jewish, yet Roughgarden implies that Christianity was more "inclusive" than Judaism, using the baptism of this person as an example. Really?

Despite everything, "Evolution's Rainbow" was worth reading, since it does contain original and provocative angles on many questions. However, I don't think it deserves five stars. I give it three.
5 von 6 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen Changed my life (no, really) 6. Dezember 2010
Von Betsy - Veröffentlicht auf Amazon.com
Format: Taschenbuch
Without any exaggeration, this book is the reason I am: a biology major, specializing in animal sexuality, a scientist at all. I read it my junior year of high school for a "science book" project - granted, with a moderate amount of interest in the aforementioned fields but certainly not moving towards them in any life-defining way - and I have loaned it out to dozens of people since then. (They just have to put up with my copious highlighting, bookmarks, and commentary.)

Whether or not one agrees with her thesis, the rejection of sexual selection - and I agree that the book alone did not convince me fully, though subsequent biology classes may have - this book is a marvelous reference and showing of the sheer, heart-stopping, mind-blowing diversity in the natural world. By page 27, Dr. Roughgarden has presented a list that would shock most people - some organisms aren't male or female for life, males and females aren't defined by XX and XY chromosomes, males aren't always bigger, males give birth in many species, there are MANY genders, males and females can be indistinguishable, sometimes females have penises and males lactate, it's far from true that males always control females, the idea that females are monogamous and males are opportunistic is a load of bunk in many species, and, well, the *only* defining characteristic of "sex" is the size of your gametes. No matter how much you already know about animal sexuality, the first section of this book will, guaranteed, tell you some amazing fact to awe you once again. That alone makes this book worth it, and a force to open eyes and minds.
3 von 3 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen I use this as a textbook. It's accessible, ... 19. September 2014
Von Lisa Griffin, Ph.D. - Veröffentlicht auf Amazon.com
Format: Taschenbuch Verifizierter Kauf
I use this as a textbook. It's accessible, interesting, and thorough (with the exception of a puzzling blind spot when it comes to the kathoey of Thailand). My only complaint is that it's ten years old now (the new edition included no text changes, only a new forward), and much of the research and politics are out-of-date. Will we see an updated version from Joan Roughgarden soon? I hope so, because this is the only book of this scope on this topic available, to my knowledge.
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