Lyubomirsky, S., &Lepper, H. S. (1999). A measure of subjective happiness: Preliminary reliability and construct validation. Social indicators research, 46(2), 137-155.
Using a ''subjectivist'' approach to the assessment of happiness, a new 4-item measure of global subjective happiness was developed and validated in 14 studies with a total of 2 732 participants. Data was collected in the United States from students on two college campuses and one high school campus, from community adults in two California cities, and from older adults. Students and community adults in ...