The Sad Truth About Happiness Scales

Working Paper: NBER ID: w19950

Authors: Timothy N. Bond; Kevin Lang

Abstract: We show that, without strong auxiliary assumptions, it is impossible to rank groups by average happiness using survey data with a few potential responses. The categories represent intervals along some continuous distribution. The implied CDFs of these distributions will (almost) always cross when estimated using large samples. Therefore some monotonic transformation of the utility function will reverse the ranking. We provide several examples and a formal proof. Whether Moving-to-Opportunity increases happiness, men have become happier relative to women, and an Easterlin paradox exists depends on whether happiness is distributed normally or log-normally. We discuss restrictions that may permit such comparisons.

Keywords: Happiness; Ordinal Scales; Utility; Cumulative Distribution Functions

JEL Codes: D60; I30; N30


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
moving to opportunity (J62)happiness (I31)
happiness distribution (D39)average happiness estimate (C13)
utility function transformation (D11)happiness ranking (I31)
assumptions about happiness distribution (D39)causal claims about happiness (I31)

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