Prior literature has found evidence that pleasant weather conditions (namely sunshine) lead to higher tip rates, presumably because pleasant weather improves the moods of either servers or patrons. But previous studies involved only a few dozen subjects on at most a handful of days. We remedy...

Amartya Sen (1933-) is one of the greatest scholars who studied the relationship between ethics and economics and was held the Nobel Economics Prize thanks to this. At the awarding of the Nobel prize, while talking about his studies, the motive was: “...has been highly instrumental in...