Since 2009, the Gallup polling firm has surveyed people in 150 countries and territories on, among other things, their daily emotional experience. Their survey asks five questions, meant to gauge whether the respondent felt significant positive or negative emotions the day prior to the survey. The more times that people answer “yes” to questions such as “Did you smile or laugh a lot yesterday?”, the more emotional they’re deemed to be.
I’d be interested in seeing these results compared to a study based on observation instead of self-reporting. Social expectations can distort self reporting. I don’t remember what it’s called, but on average people tend to fudge answers like this in favor of making themselves look better (without even realizing they aren’t being honest, if I recall). So I'd be interested in what the *actual* differences are and comparing those with what people self report.