Cuppa reports this:

With a budget of nearly 6 billion dollars, funded by your taxes, the National Science Foundation decided it would be money well spent for a survey asking “Who’s Happier - Conservatives or Liberals”?

Now I can’t say I knew that there was a “scientific” definition of Conservative, Liberal, right-wing or left-wing. And I did not notice any definitions in reports on the survey. But the study says:

More here.