PhD and master’s students worldwide report rates of depression and anxiety that are six times higher than those in the general public (T. M. Evans et al. Nature Biotech. 36, 282–284; 2018). The report, based on the responses of 2,279 students in 26 nations, found that more than 40% of respondents had anxiety scores in the moderate to severe range, and that nearly 40% showed signs of moderate to severe depression.
1. The ordeal of studying and possibly finishing is extreme, and extreme ordeals depress people. This seems inconsistent with other evidence, however, namely rising (reported) rates of depression in prosperous, comfortable societies.
2. The task of studying and possibly finishing is correlated with a kind of extreme lassitude, and that in turn is correlated with depression.
3. Graduate students become depressed as they realize they have chosen poor life paths.
4. Graduate students become depressed as they realize, a’la Caplan, that it is mostly about signaling.
5. Graduate students are undergoing a transformation of their personalities, and being turned into intellectual elites, but this process is traumatic in several regards, thus leading to frequent depression. The chance of depression is part of the price of admission to a select club.
6. Our graduate institutions serve women poorly (women in graduate school experience depression at higher rates — 41% vs 35% for the men).
7. It’s all just sample bias, as depressed graduate students have nothing better to do than respond to this survey.
What else? And how much should we regard these results are symptoms of a deeper malaise? Or is the problem confined mainly to academic life?