How Comparable are the Gallup World Poll Life Satisfaction Data?
This paper explores the degree to which the new data on life satisfaction from the Gallup World Poll are comparable to those used in previous empirical studies, predominantly those from the World Values Survey. Differences might arise due to the timing and anchoring of questions in the Gallup data. The paper identifies a set of large outlier countries, and estimates suggest that the two datasets tend to generate rather different results, questioning the degree to which they measure the same concept.
KeywordsLife satisfaction Data comparability Validity
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