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Correlational findings

Study Littman-Ovadia & Nir (2014): study IL 2011

Public:
Adults, Israel, 2011
Survey name:
Unnamed study
Sample:
Respondents:
N = 77
Non Response:
Assessment:
Questionnaire: web

Correlate

Authors's label
Optimism intervention
Our Classification
Distribution
1: N = 38, 0: N = 39
Operationalization
Participants were randomly assigned to:
1. OPTIMISM INTERVENTION.
Participants received the following instruction: ‘Think of three good things (items, people or events) waiting for you tomorrow. Write them
down. Choose one of them and try to experience and maintain the sincere heart-felt feelings associated with it for 5 min.’ After completing the task, participants were
asked to write down their experiences and submit them via the internet. They were instructed to perform the task daily, over the next six evenings, for a total of seven days.
0. CONTROL
Same instructions and procedures as in intervention group except that participants were instructed to think of three things instead of three good things.

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks A-BW-g-mq-v-5-g DM = +                 T0    T1    T2    T1-T0   T2-T0
Intervention    1,15  1,34  1,53  +0,19   +0,38
Control         1,05  1,15  1,06  +0,10   +0,01
- DIFFERENCE                      +0,09   +0,37
A-BW-g-mq-v-5-g D%sr = +                 T0    T1    T2    T1-T0   T2-T0
Intervention                      +2,4%   +4,8%
Control                           +1,2%   +0,1%
- DIFFERENCE                      +1,2%   +4,7%

Happiness assessed at:
T0 = baseline
T1 = post-intervention
T2 = 1 month follow-up

Compared to the control group, negative affect declined significantly over time in the intervention grouup, and there were no differences over time between groups in positive affect. Significance of change in affect balance remains unclear.