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

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