The Gallup Organization has a world poll where more than half a million people have been asked questions about what they think of their life and about their experiences, and there have been other efforts along those lines.
Instytut Gallupa prowadzi ogólnoświatowe badanie ponad pół miliona ludzi. Pytano ich, co myślą o własnym życiu i o swoich doświadczeniach. Czyniono też inne starania w tym kierunku.