This article comments on the psychohistorical use of the "MMPI-2 by proxy" technique that is described by Long Island University's Barry Ritzler and Meredith Singer in the October 1998 Issue of the Journal of Personality Assessment.
"Psychohistory and Personality Assessment by Proxy: Comments on Ritzler and Singer (1998),"
International Bulletin of Political Psychology: Vol. 5
, Article 2.
Available at: https://commons.erau.edu/ibpp/vol5/iss24/2