Constructing Summary Indices of Quality of Life
نویسندگان
چکیده
We consider how to construct summary indices (e.g., Quality of Life indices) for a social unit (e.g., cities, states, nations) that will be endorsed by a majority of its citizens. We assume that many social indicators are available to describe the social unit, but that individuals disagree about the relative weights to be assigned to each social indicator. The summary index that maximizes agreement among citizens can then be derived, along with conditions under which an index will be endorsed by a majority in the social unit. We show that, in every case, intuition greatly underestimates the extent of agreement among individuals, and that it is often possible to construct a QOL index that a majority of citizens agree with (at least in direction). In particular, we show that the equal-weighting strategy is privileged in that it minimizes disagreement among all possible individuals’ weights. When the actual distribution of individuals’ weights is known, one can improve agreement further. We demonstrate these propositions by calculating real QOL indices for two surveys of citizens’ actual importance weights.
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