How to use life satisfaction surveys to measure human quality of life? Some researchers had been carrying on researching a methodologically improved and more comprehensive measure of qualify of life satisfaction surveys. Surveys of life satisfaction is as opposed to surveys of the related concept of happiness, are preferred for a number of reasons, such as GDP statistic method. These surveys ask people the simple question of how satisfied who are with their lives in general. A typical question is on the four point scale used to the surveys studies. For example, on the whole are you very satisfied, fairly satisfied, not vey satisfied, or not at all satisfied with the life you lead? The results of the surveys have been attracting growing interest in recent years. Despite a range of early criticism, such as cultural non-comparability, the effect of language differences across countries, psychological factors distorting responses, tests have disproved as most concerns. One objection is that responses to surveys don't adequately reflect how people really feel about their life. However, responses to questions about life satisfaction tend to be promoted, non-response rates are very low. This simple measure of life satisfaction has been found to correlate highly with more sophisticated test ratings by others who know the individual, and behavioral measures. The survey results have on the whole proved far more reliable and information then might be expected to measure quality of life.Another criticism is that life-satisfaction responses reflect the dominant view on life, rather than actual quality of life in a country. So, life satisfaction is seen as a judgement that depends on social and culturally aspects, but this relativism is disproved by the fact that people in different countries report similar criteria as being important for life satisfaction, and by the fact that most differences in life satisfaction across countries can be explained by differences in objective circumstances. In addition, it has been found that the responses of immigrants in a country are much closer the level of the local population than to responses in their motherland.In the view point of economists, who disagree to take the survey results completely at face value and use the average score on life satisfaction as the indicator of quality of life for a country. There are several reasons. First, comparable results for a sufficient number of countries tend to be out -of -date and many nations are not covered at all. Second, the impact of measurement errors on assessing the relationship indicators tends to cancel out across a large number of countries. But these might still be significant errors for any given country. So, there is a bigger chance of error in assessing quality of life between countries if we take a single average life satisfaction score as opposed to a multi-component index. Finally, and most important reason, although most of the inter-country variation in the life satisfaction surveys can be explained by objective factors, there is still a significant unexplained component which, in addition to measurement error, might to related to specific factors, that we want to net out from an objective quality of life index.