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2.4: Nature AND Nurture

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    204942
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    The nature versus nurture or genes versus environment controversy has been debated for a while. For a long time, most people have agreed that this question is not a dichotomy, but rather a spectrum. However, the next step has been the attempt to identify the amount of contribution of genes to a trait added to that of the contribution of the environment. This assumes an additive framework which is inherently flawed. Most scholars agree that there is a constant interplay between nature (heredity) and nurture (the environment). It is difficult to isolate the root of any single characteristic as solely nature or nurture, and most scholars believe that even determining the extent to which nature or nurture impacts a human feature is difficult to answer. In fact, almost all human features are polygenic (a result of many genes) and multifactorial (a result of many factors, both genetic and environmental). It’s as if one’s genetic make-up sets up a range of possibilities, which may or may not be realized depending upon one’s environmental experiences. For instance, a person might be genetically predisposed to develop diabetes, but the person’s lifestyle may determine whether or not they actually develop the disease.

    If we try to say that genes influence traits plus the environment influences that trait to produce some level of that trait, we are ignoring the fact that there might be some interplay of those genes with those environmental factors. It was long thought that genes remain the same from one generation to the next. However, the epigenetic framework suggests that the environment can affect the expression of genes just as genetic predispositions can impact a person’s potentials. And environmental circumstances can trigger symptoms of a genetic disorder.[1]

    Attributions:

    Child Growth and Development by Jennifer Paris, Antoinette Ricardo, and Dawn Rymond, 2019, is licensed under CC BY 4.0 (adapted by Bhadha, 2023)

    [1] Lifespan Development - Module 3: Prenatal Development by Lumen Learning references Psyc 200 Lifespan Psychology by Laura Overstreet, licensed under CC BY 4.0


    2.4: Nature AND Nurture is shared under a CC BY license and was authored, remixed, and/or curated by LibreTexts.

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