"Last year I concluded.... that frequent Facebook use was not indicative of narcissism though we did conclude that excessive use of Twitter was."

"But one year later, I doubt we would find the same results. Twitter, like Facebook, has become part of the national psyche."

Science marches on and so does the internet.

Apparently, the nation has a psyche, and the people, within that psyche, can't be diagnosed with a mental disorder that is the condition of the national psyche. It can't be a disorder at that point, presumably, because whatever characterizes the whole nation is order, and if you've ordered yourself to the new order, you are not disordered.

I Google "national psyche," and the first thing that came up was this Wikipedia article "National psychology," which begins:

National Psychology refers to the (real or alleged) distinctive psychological make-up of particular nations, ethnic groups or peoples, and to the comparative study of those characteristics in social psychology, sociology, political science and anthropology.

The assumption of national psychology is that different ethnic groups, or the people living in a national territory, are characterized by a distinctive "mix" of human attitudes, values, emotions, motivation and abilities which is culturally reinforced by language, the family, schooling, the state and the media.

According to the pioneer psychologist Wilhelm Wundt, the attempt to theorize scientifically about national psychology dates from the mid-19th century. Around 1900, national psychology had become an accepted topic of study in the social sciences, at universities in Western Europe and North America....

And then what happened?