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Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience, such as differences...
Plasticity00:58

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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
Neuroplasticity01:01

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Human Genetics01:28

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Introduction to Developmental Psychology01:27

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Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
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Human development is typically examined across three main domains: physical, cognitive, and socio-emotional. These domains represent the significant areas of change and continuity throughout the lifespan, from infancy to late adulthood.
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発達性可塑性と人間の健康について

Patrick Bateson1, David Barker, Timothy Clutton-Brock

  • 1Sub-Department of Animal Behaviour, University of Cambridge, High Street, Madingley, Cambridge CB3 8AA, UK. ppgb@cam.ac.uk

Nature
|July 23, 2004
PubMed
まとめ

生物は,幼少期と親の被曝の影響を受け,発達的な可塑性を通じて環境に適応する. 急速な環境の変化は,公衆衛生戦略に影響を及ぼす健康リスクをもたらす可能性があります.

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科学分野:

  • 発達生物学 発達生物学とは
  • 進化生物学の進化生物学について
  • 人間の健康 人々の健康

背景:

  • 生物はフェノタイプの可塑性を発揮し,環境条件にサイズや代謝などの特性を適応させます.
  • 幼児期または親の被曝は,発達的な適応を誘発し,予測された環境に対する子孫の準備をすることができます.
  • ある環境に対する発達的な適応は,個人が後年になって新しい状況に遭遇するときに脆弱性を生み出す可能性があります.

研究 の 目的:

  • 環境のシグナルに反応する発達性可塑性の生物学的な基礎を探求する.
  • 幼児の栄養と環境要因が,人間の発達と病気の感受性にどのように影響するかを理解する.
  • 希少期に続く環境の急速な改善がもたらす矛盾した健康上の結果について調べる.

主な方法:

  • 植物や動物のフェノタイプの可塑性に関する生物学的証拠のレビュー.
  • 改善された母子の栄養に反応する人間の発達変化の分析.
  • 環境被曝の世代間影響を考慮する.

主要な成果:

  • 発達の可塑性は,生物が環境条件に特性を合わせ,生存や繁殖を最適化することを可能にします.
  • 体のサイズや代謝を含む子孫の特徴は,母親の栄養状態によって影響を受けます.
  • 生活条件の急速な改善は,逆説的に,祖先が貧困を経験した個人に害を及ぼす可能性があります.

結論:

  • 人間の発達における可塑性を理解することは,健康上の結果を予測する上で極めて重要です.
  • 早期の環境曝露と栄養は,長期的な健康と疾患リスクを大きく左右します.
  • 公共衛生の取り組みは,発達的な可塑性と環境変化の長期的な影響を考慮する必要があります.