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Index-number tests and the common-scaling social cost-of-living index

机译:指数测试和共同定标的社会生活成本指数

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摘要

For a change in prices, the common-scaling social cost-of-living index is the equal scaling of each individual’s expenditure level needed to restore the level of social welfare to its pre-change value. This index does not, in general, satisfy two standard index-number tests. The reversal test requires the index value for the reverse change to be the reciprocal of the original index. And the circular test requires the product of index values for successive price changes to be equal to the index value for the whole change. We show that both tests are satisfied if and only if the Bergson–Samuelson indirect social-welfare function is homothetic in prices, a condition which does not require individual preferences to be homothetic. If individual preferences are homothetic, however, stronger conditions on the Bergson–Samuelson indirect must be satisfied. Given these results, we ask whether the restrictions are empirically reasonable and find, in the case that individual preferences are not homothetic, that they make little difference to estimates of the index.
机译:对于价格变化,共同定标的社会生活成本指数是指将社会福利水平恢复到其变化前的价值所需的每个人的支出水平的同等定额。该索引通常不满足两个标准索引号测试。反向测试要求反向更改的索引值是原始索引的倒数。循环检验要求连续价格变动的指数值的乘积等于整个变动的指数值。我们证明,只有当Bergson-Samuelson间接社会福利功能在价格上是同质的,并且不需要个人偏爱是同质的条件时,两个检验都可以满足。但是,如果个人偏好是对立的,则必须满足Bergson-Samuelson间接条件的更强条件。根据这些结果,我们询问这些限制条件是否在经验上是合理的,并且在个人偏好不相同的情况下,发现它们对指数的估计没有太大的影响。

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  • 来源
    《Social Choice and Welfare》 |2012年第3期|407-429|共23页
  • 作者单位

    Department of Economics University of British Columbia 4408 W. 15th Avenue Vancouver BC V6R 3B2 Canada;

    Department of Economics Simon Fraser University 8888 University Drive Burnaby BC V5A 1S6 Canada;

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