The revolution that wasn't: a new interpretation of the origin of modern human behavior.
TL;DR: The African Middle and early Late Pleistocene hominid fossil record is fairly continuous and in it can be recognized a number of probably distinct species that provide plausible ancestors for H. sapiens, and suggests a gradual assembling of the package of modern human behaviors in Africa, and its later export to other regions of the Old World.
About: This article is published in Journal of Human Evolution.The article was published on 2000-11-01. It has received 2165 citations till now. The article focuses on the topics: Behavioral modernity & Later Stone Age.
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Howard Hughes Medical Institute1, Harvard University2, Broad Institute3, University of California, Berkeley4, University of California, Los Angeles5, Chinese Academy of Sciences6, Max Planck Society7, Columbia University8, Massachusetts Institute of Technology9, Cayetano Heredia University10, University of Pennsylvania11, University College London12, University of Bern13, Leiden University14, Nanyang Technological University15, University of Chicago16, Estonian Biocentre17, National University of La Plata18, University of Oxford19, University of Bergen20, Novosibirsk State University21, Moscow Institute of Physics and Technology22, Sofia Medical University23, Armenian National Academy of Sciences24, Wellcome Trust Sanger Institute25, Raja Isteri Pengiran Anak Saleha Hospital26, Case Western Reserve University27, University of Tartu28, Estonian Academy of Sciences29, Stony Brook University30, Illumina31, Gladstone Institutes32, University of Helsinki33, University of Washington34, Bashkir State University35, Jaramogi Oginga Odinga University of Science and Technology36, Pompeu Fabra University37, University of Arizona38, University of Cambridge39, Leidos40, Université de Montréal41, University of Utah42, Altai State University43, Council of Scientific and Industrial Research44
TL;DR: It is demonstrated that indigenous Australians, New Guineans and Andamanese do not derive substantial ancestry from an early dispersal of modern humans; instead, their modern human ancestry is consistent with coming from the same source as that of other non-Africans.
Abstract: Here we report the Simons Genome Diversity Project data set: high quality genomes from 300 individuals from 142 diverse populations. These genomes include at least 5.8 million base pairs that are not present in the human reference genome. Our analysis reveals key features of the landscape of human genome variation, including that the rate of accumulation of mutations has accelerated by about 5% in non-Africans compared to Africans since divergence. We show that the ancestors of some pairs of present-day human populations were substantially separated by 100,000 years ago, well before the archaeologically attested onset of behavioural modernity. We also demonstrate that indigenous Australians, New Guineans and Andamanese do not derive substantial ancestry from an early dispersal of modern humans; instead, their modern human ancestry is consistent with coming from the same source as that of other non-Africans.
1,133 citations
TL;DR: It is shown that under conditions likely to have been experienced by late Pleistocene and early Holocene humans, neither parochialism nor altruism would have been viable singly, but by promoting group conflict, they could have evolved jointly.
Abstract: Altruism—benefiting fellow group members at a cost to oneself—and parochialism—hostility toward individuals not of one9s own ethnic, racial, or other group—are common human behaviors. The intersection of the two—which we term “parochial altruism”—is puzzling from an evolutionary perspective because altruistic or parochial behavior reduces one9s payoffs by comparison to what one would gain by eschewing these behaviors. But parochial altruism could have evolved if parochialism promoted intergroup hostilities and the combination of altruism and parochialism contributed to success in these conflicts. Our game-theoretic analysis and agent-based simulations show that under conditions likely to have been experienced by late Pleistocene and early Holocene humans, neither parochialism nor altruism would have been viable singly, but by promoting group conflict, they could have evolved jointly.
917 citations
Book•
01 Jan 2005
TL;DR: Boyd and Richerson as mentioned in this paper argued that culture is a pool of information stored in the brains of a population, that gets transmitted from one brain to another by social learning processes.
Abstract: Over the past 25 years, Boyd and Richerson have become well-known across a wide range of disciplines for their path-breaking work on evolution and culture. This work collects twenty of the influential but relatively inaccessible published articels that form the backbone of this research. It could not be more timely given the growing influence of evolutionary psychology. The papers - which were published in a diverse set of journals and which are not easily available - a conceptually linked and form a cohesive, unified evolutionary account of human culture. Their interdisciplinary research is based on two notions. First, that culture is crucial for understanding human behavior: unlike other organism, socially transmitted beliefs, attitudes and values heavily influence our behavior. Secondly, culture is part of biology: the capacity to acquire and transmit culture is a derived component of human psychology, and the contents of culture are deeply intertwined with our biology. Taking off from these two assumptions, Boyd and Richerson's novel idea is that culture is a pool of information, stored in the brains of a population, that gets transmitted from one brain to another by social learning processes. Among their conclusions: culture can account for both our astounding ecological success as well as the maladaptations that characterize much of human behavior. Interest in Boyd and Richerson's work spans anthropology, psychology, economics, philosophy, and political science, and has influenced work on animal behavior, economics and game theory, memes, and even archaeology.
829 citations
TL;DR: The authors exploit newly available massive natu- ral language corpora to capture the language as a language evolution phenomenon. But their work is limited to a subset of the languages in the corpus.
826 citations
TL;DR: A population model shows that demography is a major determinant in the maintenance of cultural complexity and that variation in regional subpopulation density and/or migratory activity results in spatial structuring of cultural skill accumulation.
Abstract: The origins of modern human behavior are marked by increased symbolic and technological complexity in the archaeological record. In western Eurasia this transition, the Upper Paleolithic, occurred about 45,000 years ago, but many of its features appear transiently in southern Africa about 45,000 years earlier. We show that demography is a major determinant in the maintenance of cultural complexity and that variation in regional subpopulation density and/or migratory activity results in spatial structuring of cultural skill accumulation. Genetic estimates of regional population size over time show that densities in early Upper Paleolithic Europe were similar to those in sub-Saharan Africa when modern behavior first appeared. Demographic factors can thus explain geographic variation in the timing of the first appearance of modern behavior without invoking increased cognitive capacity.
819 citations
References
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Book•
01 Jan 1990
TL;DR: This chapter summarizes the author's research into how monkeys see the world through the lenses of vocal communication and social relationships and describes how these perceptions changed over time.
Abstract: Acknowledgments
1. What Is It Like to be a Monkey?
2. Social Behavior
3. Social Knowledge
4. Vocal Communication
5. What the Vocalizations of Monkeys Mean
6. Summarizing the Mental Representations of Vocalizations and Social Relationships
7. Deception
8. Attribution
9. Social and Nonsocial Intelligence
10. How Monkeys See the World
Appendix
References
Index
1,318 citations
TL;DR: The African origin hypothesis of human mtDNA evolution is supported by two statistical tests and two hypervariable segments of mtDNA were sequenced from 189 people of diverse geographic origin, including 121 native Africans.
Abstract: The proposal that all mitochondrial DNA (mtDNA) types in contemporary humans stem from a common ancestor present in an African population some 200,000 years ago has attracted much attention. To study this proposal further, two hypervariable segments of mtDNA were sequenced from 189 people of diverse geographic origin, including 121 native Africans. Geographic specificity was observed in that identical mtDNA types are shared within but not between populations. A tree relating these mtDNA sequences to one another and to a chimpanzee sequence has many deep branches leading exclusively to African mtDNAs. An African origin for human mtDNA is supported by two statistical tests. With the use of the chimpanzee and human sequences to calibrate the rate of mtDNA evolution, the age of the common human mtDNA ancestor is placed between 166,000 and 249,000 years. These results thus support and extend the African origin hypothesis of human mtDNA evolution.
1,247 citations
TL;DR: In this article, DNA was extracted from a Neandertal-type specimen found in 1856 in western Germany and a hitherto unknown mt-DNA sequence was determined by sequencing clones from short overlapping PCR products.
1,207 citations
TL;DR: The finding of a recent common ancestor (probably in the last 120,000 years), coupled with a strong signal of demographic expansion in all populations, suggests either a recent human expansion from a small ancestral population, or natural selection acting on the Y chromosome.
Abstract: We use variation at a set of eight human Y chromosome microsatellite loci to investigate the demographic history of the Y chromosome. Instead of assuming a population of constant size, as in most of the previous work on the Y chromosome, we consider a model which permits a period of recent population growth. We show that for most of the populations in our sample this model fits the data far better than a model with no growth. We estimate the demographic parameters of this model for each population and also the time to the most recent common ancestor. Since there is some uncertainty about the details of the microsatellite mutation process, we consider several plausible mutation schemes and estimate the variance in mutation size simultaneously with the demographic parameters of interest. Our finding of a recent common ancestor (probably in the last 120,000 years), coupled with a strong signal of demographic expansion in all populations, suggests either a recent human expansion from a small ancestral population, or natural selection acting on the Y chromosome.
1,135 citations
Book•
12 Dec 1979
TL;DR: The!Kung ecology and society as discussed by the authors is a good starting point for a discussion of ecology and social change in the Dobe region of South-West Africa, focusing on the allocation of nutritional stress and the use of space.
Abstract: List of tables and figures Preface Note on orthography Introduction: !Kung ecology and society 1. Fieldwork with the !Kung 2. San, Bushman, Basarwa: a question of names 3. The Dobe area: its people and their history 4. The environment 5. Technology and the organisation of production 6. An inventory of plant resources 7. The mongongo 8. Hunting 9. Men, women and work 10. The allocation of nutritional stress 11. Production and reproduction 12. Ownership, leadership and the use of space 13. Conflict and violence 14. Economic and social change in the 1960s and 1970s 15. The lessons of the !Kung Appendix A-E Bibliography Index.
1,081 citations