実存的危機
J. Watson, Caring Science as Sacred Science 2005. Chapter 4: "Existential Crisis in Science and Human Sciences".
T.M. Cousineau, A. Seibring, M.T. Barnard, P-673 Making meaning of infertility: Existential crisis or personal transformation? Fertility and Sterility, 2006.
Sanders, Marc, Existential Depression. How to recognize and cure life-related sadness in gifted people, 2013.