"The $128k cap may seem limiting for the US but it is not for Nigeria or the other lower-income countries, yet they still show the same patterns." And that's w

"The $128k cap may seem limiting for the US but it is not for Nigeria or the other lower-income countries, yet they still show the same patterns." And that's why the cap for Nigeria is at $8k... In fact, as someone else has commented: https://news.ycombinator.com/item?id=7047548 https://news.ycombinator.com/item?id=7047548 "According to the paper (page 13), they only look at incomes between the 10th and 90th percentiles. That's why they cut off at $128,000 for US residents" In my opinion, ignoring data from the top 10% earners is the perfect way to get plots that seem to disprove a paradox that states "Become rich enough, and a bigger paycheque no longer leads to more happiness".