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Big Five Personality Traits of Adolescents aged 11–19 Years from the Czech and Slovak Republics: Age, Sex and Nationality Specifications

The article explores basic personality
characteristics in accordance with the Big Five
inventory; it concerns the age category of adolescence,
i.e. the ages 11–19. Particular attention is paid
to the variables of age, sex, and nationality as
factors contributing to the establishment of these
personality characteristics. The research involved
2,830 adolescents aged 11–19. The average age was
14.89 (SD = 2.23). Participants attended lower or
higher secondary education (ISCED 2 and 3) in the
Czech Republic or the Slovak Republic. The research
employed the Big Five Inventory BFI-10. While
investigating relations between individual variables,
we used the method of linear regression and three
models where age, sex, and nationality were used
as predictors. Our results support the evidence that
these are important predictors of basic personality
characteristics in adolescence. Their predictive power
is, however, not equal.

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