Comment by rayiner

A confounding factor here is that savings behavior is cultural rooted: https://pmc.ncbi.nlm.nih.gov/articles/PMC6135367/. Studies show that people within a country can have substantially different savings behaviors, robustly correlated with their origin countries, even among people who are third generation immigrants. It’s a mistake to treat either the U.S. or Singapore as homogenous populations for purposes of this analysis.