- 18+ aged, general public, 78 nations, 1991-2001
- N = 100000
- Non Response:
- Interview: face-to-face
- Authors's Label
- Income inequality
- Our Classification
- Source: UN-HDR 2004, table 14
- Range: 2,6 (Slovakia) - 38,1 (Honduras).
- Income share richest 20% versus poorest 20%.
Observed Relation with Happiness
Remark: Inequality in happiness (SD) by income inequality: r = +.24, meaning that more income inequality goes with more happiness inequality.