Easterlin, Richard A.; O'Connor, Kelsey J. - 2023
with declining generosity. This is the principal conclusion from a time series study of ten Northern, Western, and Southern … long-term time-series data these variables have no relation to happiness. Significance: Over the past five decades …-section) evidence supporting its claim, but there are very few long-term time-series studies. This article presents newly available time-series …