後期プレイストセンの人口統計と,現代の人間の行動の出現

Adam Powell¹, Stephen Shennan, Mark G Thomas

¹Research Department of Genetics, Evolution, and Environment, University College London, Wolfson House, 4 Stephenson Way, London NW1 2HE, UK.

Science (New York, N.Y.)

|June 6, 2009

まとめ

認知能力ではなく,人口統計的要因が,現代の人間の行動のタイミングを説明している. 人口密度と移住は,初期の人類の文化的複雑性の発達に影響を与えた.

科学分野:

古人類学は,古人類学である.
考古学考古学とは
人口遺伝学人口遺伝学

背景:

現代の人間の行動は,象徴的および技術的な複雑性が増加した状態で生まれました.
ユーラシア (4万5千年前) の上古石器時代の移行は,南アフリカ (4万5千年前) の以前の特徴を反映している.

研究の目的:

文化的複雑性の出現と維持における人口学の役割を調査する.
現代の人間の行動の出現における地理的多様性を説明する.

主な方法:

象徴的および技術的な複雑性に関する考古学的記録の分析.
時間の経過とともに地域の人口の大きさの遺伝的推定.
文化技能蓄積に対するサブ人口密度と移住活動の影響をモデル化.

主要な成果:

人口統計は,文化的複雑性を維持する重要な要因です.
地域の亜人口密度と移住活動は,文化的スキル蓄積の空間的構造に影響を与えます.
初期の上古石器時代のヨーロッパにおける人口密度は,近代的な行動の初期のサハラ以南のアフリカにおける人口密度と比べられる.

結論:

人口統計的要因は,現代の人間の行動の出現における地理的および時間的な変動を十分に説明します.
これらの違いを説明するために,認知能力の向上は必要ではありません.
人口の動態は,人間の文化の発展において決定的な役割を果たしました.

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