Study Sheldon & Lyubomirsky (2006a): study US 2001

Public:

Psychology students, USA, followed 12 weeks, 200?

Sample:

Respondents:

N = 669

Non Response:

Assessment:

Questionnaire: paper

Correlate

Authors's Label

Activity change

Our Classification

Remarks

Assessed at T2 T1: at beginning of semester T2: 6 weeks later T3: 12 weeks later

Distribution

Mean = 3.39, SD = 1.08

Operationalization

Selfreport of change in activity over last 6 weeks on a 5-point-scale ranging from 1 (no positive change) to 5 (much positive change)

Observed Relation with Happiness