Correlational finding on Happiness and Current specific mental disorders (icd-10 classification)
Subject code: H13ac

StudyLehman (1988): study US 1981
TitleA Quality of Life Interview for the Chronically Mentally Ill.
SourceEvaluation and Program Planning, 1988, Vol. 11, 51 - 62
PublicChronic mental patients, USA,1981
SampleNon-probability purposive sample
Respondents N =469

Author's labelPersonality Disorder
Page in Source 57
Our classificationCurrent specific mental disorders (icd-10 classification), code H13ac

Observed Relation with Happiness
O-DT-u-sqt-v-7-ar=-.06 ns
Los Angeles: mentally ill residents of 30 large 
board-and-care homes
O-DT-u-sqt-v-7-ar=-.07 ns
Rochester: chronically mentally ill inpatients at 
the Rochester(N.Y.) Psychiatric Center
O-DT-u-sqt-v-7-ar=-.13 ns
Rochester:chronically mentaly ill residents of 
various supervised community residences

Appendix 1: Happiness measures used
CodeFull Text
O-DT-u-sqt-v-7-aSelfreport on single question, asked twice in interview:

How do you feel about your life as a whole......?
7 delighted
6 pleased
5 mostly satisfied
4 mixed
3 mostly dissatisfied
2 unhappy
1 terrible

Summation: arithmetic mean

Name: Andrews & Withey's "Delighted-Terrible Scale" (original version)
Also known as Lehman's 'Global lifesatisfaction'

Appendix 2: Statistics used
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.