Myers and Diener (1995) asked ''Who is happy?'' but examined the quest
ion of who is more and who is less happy. In fact, most people report
a positive level of subjective well-being (SWB), and say that they are
satisfied with domains such as marriage, work, and leisure. People in
disadvantaged groups on average report positive well-being, and measu
rement methods in addition to self-report indicate that most people's
affect is primarily pleasant. Cross-national data suggest that there i
s a positive level of SWB throughout the world, with the possible exce
ption of very poor societies. In 86% of the 43 nations for which natio
nally representative samples are available, the mean SWB response was
above neutral. Several hypotheses to explain the positive levels of SW
B are discussed.