Based on the results from an earlier paper of the author [1] the spread within the groups is very high. So there is no shortage of miserable people in the high

Based on the results from an earlier paper of the author [1] the spread within the groups is very high. So there is no shortage of miserable people in the high income bracket. [1] https://www.pnas.org/doi/10.1073/pnas.2208661120 https://www.pnas.org/doi/10.1073/pnas.2208661120