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グループサイズが文化的複雑性に影響する実験的証拠
Maxime Derex1, Marie-Pauline Beugin, Bernard Godelle
1University of Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
Nature
|November 15, 2013
まとめ
人間の文化的複雑性は,グループのサイズに依存します. 人口が増えると,文化的な知識と革新がより良く維持され,スキルの喪失と社会の崩壊のリスクを防ぐことができます.
科学分野:
- 進化人類学とは
- 認知科学とは,認知科学である.
- 社会的ダイナミクス
背景:
- 人間の成功は,累積的な文化,つまり世代を超えたイノベーションの伝播と結びついている.
- 不完全な文化伝達と革新の忠誠性は,文化的複雑性を維持する上で課題を提起する.
- 人口の大きさと文化的複雑性の関係については,混雑した人類学的な発見と限られた経験的データで議論されています.
研究 の 目的:
- 人口の大きさが文化的進化と複雑性に与える影響を実証的に調査する.
- 人口の増大が文化的特徴の維持と進歩を容易にするかどうかを判断する.
主な方法:
- 文化伝播をシミュレートするデュアルタスクのコンピューターゲームを利用した.
- 文化的複雑性への影響を観察するために,グループサイズを操作した.
- 文化的な知識の劣化,イノベーションの頻度,特徴の多様性を追跡した.
主要な成果:
- グループサイズが大きいと,文化的な複雑性が高かった.
- 人口増加により,文化的知識の劣化が少なくなった.
- 既存の文化的特徴の改善と特徴の多様性の維持は,より大きなグループでより頻繁に行われた.
結論:
- 文化の進化は,人口規模によって大きく影響を受けます.
- 文化的な複雑性を維持し,スキルの喪失を防ぐために,より大きな人口は極めて重要です.
- グループサイズを減らすことは,文化的スキルの喪失により,社会の安定にリスクをもたらす可能性があります.
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