Social mobility measures based on income (PPP) percentiles are misleading because they don't account for the hugely different income variances between countries. In countries with low income variances like Denmark, a small change in your absolute income will be deemed "socially mobile" whereas a much larger increase absolute income in countries with high income variances like the US will be deemed as not "socially mobile" even when it is vastly better for the average individual in absolute income terms.
Individuals don't care about their ability to change their percentile, they care about their ability to change their total income. I think most individuals would prefer a "non-mobile" $60k increase in income versus a "mobile" $40k increase in income. You can't spend percentiles.
Individuals don't care about their ability to change their percentile, they care about their ability to change their total income. I think most individuals would prefer a "non-mobile" $60k increase in income versus a "mobile" $40k increase in income. You can't spend percentiles.