Ed diener"s satisfaction with life style, a widely used measure of happiness. Sample a group of units selected from a larger group that is known as the population. Survey research research in which information is obtained from a sample of individuals through their responses to questions about themselves or others. When studying happiness, we should be concerned with who we study and when we study them: sampling populations and census study the entire population of interest but it"s difficult to account for all people. Cross population generalizability extent to which result of a population can be applied to another country; tested by comparing results from samples of the different populations. Westerners perceive scenes by focusing on distinctive objects and asian cultures view scenes holistically. Population the entire set of individuals of other entities to with study findings are to be generalized. Elements the individual members of the population whose characteristics are to be measured.