It seems we search more for jokes in better, cheerier times:
…Monday is actually the day we are least likely to search for jokes. Searches for jokes climb through the week and are highest on Friday through Sunday. This isn’t because people are too busy with work or school on Mondays. Searches for “depression,” “anxiety” and “doctor” are all highest on Mondays.
Second, I compared searches for jokes to the weather. I did this for all searches in the New York City area over the past five years. Rain was a wash, but there were 6 percent fewer searches for jokes when it was below freezing. There were also 3 percent fewer searches for jokes on foggy days.
Finally, I looked at searches for jokes during traumatic events. Consider, for example, the Boston Marathon bombing. Shortly after the bombing, searches for “jokes” dropped nearly 20 percent. They remained almost as low in the days after the attack, including the Friday when Boston was in lockdown while the authorities searched for the bomber who was still on the loose. They didn’t return to normal until two weeks later.
Sure, some other entertainment searches, like “music” and “shopping,” also dropped after the bombing. Declines in these searches, however, were smaller than declines in searches for jokes, and some entertainment searches, like “games,” actually rose during the manhunt.
That is from Seth Stephens-Davidowitz (NYT). I am mostly convinced, in part because of the Boston data, still I wonder how much searching for jokes is in fact correlated with better moods. I would think of myself as being in a rather sad state if I had to find humor from impersonal sources on-line, rather than from people I know.