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Behavioral modernity : ウィキペディア英語版
Behavioral modernity

Behavioral modernity is a suite of behavioral and cognitive traits that distinguishes current ''Homo sapiens'' from anatomically modern humans, hominins, and other primates. Although often debated, most scholars agree that modern human behavior can be characterized by abstract thinking, planning depth, symbolic behavior (e.g. art, ornamentation, music), exploitation of large game, blade technology, among others. Underlying these behaviors and technological innovations are cognitive and cultural foundations that have been documented experimentally and ethnographically. Some of these human universal patterns are cumulative cultural adaptation, social norms, language, cooperative breeding, and extensive help and cooperation beyond close kin. These traits have been viewed as largely responsible for the human replacement of Neanderthals in Western Europe, along with the climatic conditions of the Last Glacial Maximum, and the peopling of the rest of the world.〔
Arising from differences in the archaeological record, a debate continues as to whether anatomically modern humans were behaviorally modern as well. There are many theories on the evolution of behavioral modernity. These generally fall into two camps: gradualist and cognitive approaches. The Later Upper Paleolithic Model refers to the idea that modern human behavior arose through cognitive, genetic changes abruptly around 40–50,000 years ago. Other models focus on how modern human behavior may have arisen through gradual steps; the archaeological signatures of such behavior only appearing through demographic or subsistence-based changes.〔〔
== Definition ==

In order to classify what traits should be included in modern human behavior, it is necessary to define behaviors that are universal among living human groups. Examples of these human universals are abstract thought, planning, trade, cooperative labor, body decoration, control and use of fire, among others. Along with these traits, humans possess a heavy reliance on social learning. This cumulative cultural change or cultural "ratchet" separates human culture from social learning in animals. As well, a reliance on social learning may be responsible in part for humans' rapid adaptation to many environments outside of Africa.
There is also an important distinction to be made between when humans developed the ability to ''invent'', in contrast to developing the ability to ''adopt'', modern human behavior. As a modern analogy, there is no shortage of musicians in the world trying to compose new and original music, but only a handful every year that successfully manage to compose lasting worldwide hit songs; yet essentially all of the other aspiring composer musicians can almost trivially learn to play those hit songs once they've heard them (with analogous undertakings in literature, art, science and technology etc.). A dramatic and sudden increase in complexity of human behavior is thus fully plausible even if significantly less than 1% of humanity developed the genetic ability to "invent", provided that the remaining 99% had no significant problems with "adopting" those inventions. There is potentially an evolutionary abyss between ''inventing'' and ''adopting''; for instance, ''Homo erectus'' and ''Homo ergaster'' produced with little advancement essentially the same sharpened stone tools for over a million years, but there is no scientific evidence at hand that could prove that they were incapable of producing composite stone tools, such as spears, if shown how to do so.
It is thus not established if the early ''Homo sapiens'' had the genetic requirements to be able to adopt modern human behavior, such as religious beliefs, through cultural interaction. If indeed the early ''Homo sapiens'' had the ability to learn modern human behavior, once invented by other groups, there is no geographic restriction where modern behavior originated. However, if the early ''Homo sapiens'' hypothetically were genetically inhibited from adopting modern human behaviors, since cultural universals are found in all cultures including some of the most isolated indigenous groups, these traits must have evolved or have been invented in Africa prior to the exodus.〔(【引用サイトリンク】title=three distinct human populations )
Archaeologically a number of empirical traits have been used as indicators of modern human behavior. While these are often debated a few are generally agreed upon. Archaeological evidence of behavioral modernity are:〔〔
* burial
* fishing
* figurative art (cave paintings, petroglyphs, figurines)
* systematic use of pigment (such as ochre) and jewelry for decoration or self-ornamentation
* Using bone material for tools
* Transport of resources long distances
* Blade technology
* Diversity, standardization, and regionally distinct artifacts
* Hearths
* Composite tools

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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