Happiness:)!!

I think these data collection tools are valid scientific tools, because they asked question always happen in our life. Maybe we can find some answer in our life. Yes, if we use these tools to do the research and find the result, we can say this one population is happier than another. It is not 100% right but almost. For example, if Chinese and Canadians’ people do this research, the result is Chinese people happy than Canadians people that means is most Chinese people happy than Canadians people.
I think my results on the on-line survey would be a litter different if I did it at another time or day, because it is depend my feeling in this day. If this day I am very happy maybe when I do this research the result should be better, because in this day I feel everything is wonderful. But if in this day my feel very bad, I think the result is so different. So, it is a litter different on your feel, because we are human.
In my opinion, I think if we do this research need to find people in same level. Such as, all the university students or people living in cities. Because when they in the same level that is they have almost same life style. They have same education or same background. So, when this same people to the research the result more to validity. You cannot both to ask some young children and old person, because they are different level have different problems. For the young they do not need to worry about money, job and responsibility. For the old people they do not need to worry about teacher or homework. So, that is very different, you need to use same eyes to do the research. And also I think when they are both together is better and more validity. We can not just to say which one is better.