Correlational finding on Happiness and Earlier work-performance
Subject code: W06aa01

StudyWright et al. (2002): study US 1997
TitleWhen a Happy Worker is a Productive Worker: A Preliminary Examination of Three Models.
SourceCanadian Journal of Behavioural Science, 2002, Vol. 34, 146 - 150
PublicPublic-sector managers, USA, 2002, followed 2 years
SampleNon-probability chunk sample
Respondents N =59

Author's labelComposite job performance
Page in Source 148-149
Our classificationEarlier work-performance, code W06aa01
Rating by top-ranking administrative officer on 3 
dimensions of work performance: 
- work facilitation
- goal emphasis
- team building
Rated from 1(never) to 5(always)
These 3 dimensions were summed to form a composite 
measure of performance.

Rated at T1 and T2 for the past year
Observed distributionT1: M= 3,3 SD=0,7 T2: 3,2 SD=0,6
Error EstimatesCronbach alpha T1: .81, T2: .69

Observed Relation with Happiness
A-BB-u-mq-v-3-er=+.37 p < .05
T1 happiness by T1 work performance
A-BB-u-mq-v-3-er=+.45 p < .01
T1 happiness by T2 work performance
A-BB-u-mq-v-3-eBeta=+.77 p < .05
T1 happiness by T1-T2 CHANGE in performance.
Beta controlled for:
- T1 negative affectivity
- T1 positive affectivity
- T1 job satisfaction
- T1 workperformance (this control indicates 

Addition of T1 happiness in a hierarchical 
regression increases R2 from .15 to .31 

Happiness predicts performance much better than 
job satisfaction.

Appendix 1: Happiness measures used
CodeFull Text
A-BB-u-mq-v-3-eSelfreport on 8 questions:

Here is a list that describes some of the ways people feel at different times. How often do you feel each of these ways?
A On top of the world
B Very lonely or remote from other people
C Particularly excited or interested in something
D Pleased about having accomplished something
E Bored
F Depressed or very unhappy
G So restless that you could not sit long in a chair
H Vaguely uneasy about something without knowing why

Reponse options:
0 never
1 sometimes
3 often

PA = A+C+D (range 0-9)
NA = B+E+F+G+H (range 0-15)
ABS = PA-NA (range 1-7)

Name: Index of Psychological Wellbeing

Appendix 2: Statistics used
Type: test statistic.

Measurement level: Correlates: all metric, Happiness: metric.
Range: [-1 ; +1]

beta > 0 a higher correlate level corresponds to a higher happiness rating on average.
beta < 0 a higher correlate level corresponds to a higher happiness rating on average.
beta = 0 no correlation.
beta = + 1 or -1 perfect correlation.
rPRODUCT-MOMENT CORRELATION COEFFICIENT (Also "Pearson's correlation coefficient' or simply 'correlation coefficient')
Type: test statistic.
Measurement level: Correlate: metric, Happiness: metric
Range: [-1; +1]

r = 0 no correlation ,
r = 1 perfect correlation, where high correlate values correspond with high happiness values, and
r = -1 perfect correlation, where high correlate values correspond with low happiness values.
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.