Study Welsch (2002a): study ZZ 1990
- Public
- Adults, general public, 54 nations, 1990s
- Sample
- Respondents
- N = 75000
- Non Response
- n.a.
- Assessment
- Interview: face-to-face
Correlate
- Authors's Label
- Air pollutants
- Our Classification
-
-
- Remarks
- Data air quality from Air Information System (World Health Organization)
- Distribution
- Mean= a:56,16 b:56,52 c:106,35 Median= a: 40,21 b: 56,46 c:84,76 SD= a:51,66 b:25,54 c:83,47 Range= a:1-209 b:0-130 c:9-320
- Operationalization
- In kilotons urban emissions:
a Sulphur dioxide
b Nitrogen dioxide
c Particles (urban total suspended particular pollution)
Observed Relation with Happiness
B's are controled for:
- income per head
- number of scientist & engineers per thousand population
B's do not change when additionaly controled for:
- the other air pollutants
- water pollutants (phosphorus & solids)
- all B's are negative
- B's of sulphur dioxide and particles are insignificant
- B of nitrogen dioxide is significant
B -.004 means one that one kiloton nitrogen emissions goes with .004 points lower average happiness on scale 1-4