2021 年7月，St. Francis Xavier University 與St. John’s University的兩位心理醫師Juliana M. B. Khoury 與Aubrey Immelman就發表了一篇學術研究「The Personality Profile and Leadership Style of Canadian Prime Minister Justin Trudeau」
研究結論：Trudeau’s primary personality pattern was found to be Outgoing/gregarious, with a secondary Ambitious/confident pattern, and subsidiary features of the Dauntless/adventurous, Dominant/asserting, Accommodating/cooperative, and Conscientious/respectful patterns.
