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    Economics A-Level

    Externalities and Social Welfare

    What Externalities and Social Welfare means in Economics A-Level, as defined for Pearson Edexcel.

    Definition of Externalities and Social Welfare

    Analysis of the divergence between marginal private costs/benefits and marginal social costs/benefits, leading to over-consumption of demerit goods and under-consumption of merit goods.
    Pearson Edexcel · Market failure

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    Using Externalities and Social Welfare in the exam

    Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.

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    All Economics A-Level terms