Self-reported life satisfaction is highly heterogeneous across similar countries, a phenomenon that may be explained by the different scales and benchmarks that people use to evaluate themselves. This study uses cross-sectional data gathered from older populations in ten European countries to compare estimates from a model that assumes reporting styles are constant across respondents against estimates from a model in which anchoring vignettes help correct for individual-specific scale biases. Variations in response scales explain much of the difference in the raw data. Moreover, the cross-country ranking in life satisfaction depends significantly on scale biases.