Correlational finding on Happiness and Psychotic
Subject code: P05cj

StudyHolloway & Carson (1999): study GB 1990
TitleSubjective Quality of Life, Psychopathology, Satisfacton with Care and Insight: An Exploratory Study.
SourceInternational Journal of Social Psychiatry, 1999, Vol. 45, 259 - 267
PublicMental patients, UK, followed 3 years,1990-1993
SampleNon-probability purposive sample
Non-Response0
Respondents N =70

Correlate
Author's labelSANS total score
Page in Source 263
Our classificationPsychotic, code P05cj
Operationalization
Rating of psychotic symptoms and depression by 
psychiatrist
a. Demanding attention
b. Suicide ideas or behaviour
c. Panic attacks and phobias
d. Overactivity and restlessness
e. Laughing or talking to self
f. Acting out bizarre ideas
g. Posturing and mannerisms
h. Socially unacceptable habits or manners
Remarks
Schedule for the Assesment of Negative Symptoms (SANS) 
[Andreason 1982]

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-DT-u-sqt-v-7-ar=-.21
T1 happiness by T1 negative symptoms
O-DT-u-sqt-v-7-arpc=-.09 p < .28
rpc controled for depression as measured with 
subscale of comprehensive Psychitric Rating Scale
O-DT-u-sqt-v-7-ar=-.23 p < .15
T1-T3 change in hapiness by T1-T3 change symptoms 
(T1-T3 18 months)


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
SymbolExplanation
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]

Meaning:
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.
rpcPARTIAL CORRELATION COEFFICIENT
Type: test statistic
Measurement level: Correlate: metric, Happiness: metric
Range: [-1; +1]

Meaning: a partial correlation between happiness and one of the correlates is that correlation, which remains after accounting for the contribution of the other influences, or some of them, to the total variability in the happiness scores.
Under that conditions
rpc > 0 a higher correlate level corresponds with a higher happiness rating,
rpc < 0 a higher correlate level corresponds with a lower happiness rating,
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl