Correlational finding on Happiness and subject: Sum of negative life-events

StudyFromm et al. (1996): study US 1991
TitlePositive and Negative Psycholosocial Sequelae of Bone Marrow Transplantation: Implications for Quality of Life Assessment.
SourceJournal of Behavioral Medicine, 1996, Vol. 19, 221 - 240
DOIDOI:10.1007/ BF01857767
PublicAdult bone marrow transplantation survivors, USA. 1991
SampleNon-probability chunk sample
Respondents N =172

Author's labelpositive and negative sequale
Page in Source 233
Our classificationSum of negative life-events
Self-report on open questions about changes following 
a: Self-sequelae: 
   Changes specifically related to the BMT survivor
b: Family-sequelae:
   Changes  related to the respondent's family
c: Other sequelae: 
   Changes related to outsiders

Responses within each of this three categories were 
categorized as positive or negative
- positive self:   more spirituality
- negative self:   isolation
- positive family: more support
- negative family: financial constrait
- positive other:  increased contacts
- negative other:  lack of empaphy
Observed distribution% statements: - positive 90%, negative 86% about self - positive 89%, negative 74% about family - positive 49%, negative 43% about others
Greater appreciation of life mentioned by 47% (coded as 
positive self)

Observed Relation with Happiness
C-BW-c-sq-l-11-ar=+.04 ns
Number of positive changes
C-BW-c-sq-l-11-ar=-.41 p < .01
Number of negative changes

Appendix 1: Happiness measures used
CodeFull Text
C-BW-c-sq-l-11-aSelfreport on single question:

Here is a picture of a ladder. Suppose we say that the top of the ladder represents the best possible life for you and the bottom represents the worst possible life for you. Where on the ladder do you feel you personally stand at the present time?
[ 10 ] best possible life
[ 9 ]
[ 8 ]
[ 7 ]
[ 6 ]
[ 5 ]
[ 4 ]
[ 3 ]
[ 2 ]
[ 1 ]
[ 0 ] worst possible life

Preceded by 1) open questions about what the respondent imagines as the best possible life and the worst possible life. 2) ratings on the ladder of one's life five years ago and where on the ladder one expects to stand five years from now.

Name: Cantril's self anchoring ladder rating of life (original)

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.