在Happiness Formula中 伊利諾大學Ed Diener教授發表的文章
Ed Diener教授使用的五個問題簡單的量測快樂程度：(同意／不同意 共七階)
In most ways my life is ideal.
The conditions of my life are excellent.
I am satisfied with my life.
So far I have gotten the important things I want in life.
If I could live my life over, I would change almost nothing.
文章中提到快樂與生活滿意度（life satisfaction)的相關性
其中有三項重要的影響因素：
社交關係（social relationships）
工作表現（work, school, or profermance in an important role）
個人滿足感（personal – satisfaction with the self, religious or spiritual life, learning and growth, and leisure）
詳細內容請參考：
Test your happiness