The authors compared the personality characteristics of Québec Francophones (25 women, 25 men) and Anglophones (25 women, 25 men) aged 16-64 years. Each participant completed a French or English version of 3 personality inventories that measured (a) extraversion (2 scales), (b) neuroticism (2 scales), (c) psychoticism, (d) lying, (e) openness to experience, (f) conscientiousness, (g) agreeableness, (h) conservatism, and (i) altruism. Francophones scored higher than did Anglophones on psychoticism and on 1 measure of extraversion, and Anglophones scored higher than did Francophones on conservatism, but the 2 groups did not differ on the other personality traits. Men scored higher than did women on psychoticism, and women scored higher than did men on conscientiousness and agreeableness. Conservatism and altruism increased with age. The authors discuss the results in the context of cross-cultural theory and research on personality.