FiThe Big Five Inventory (BFI) is a scientific and psychometric tool developed to assess individuals’ personality traits. This scale, widely used in defining personality, is based on the assumption that personality structure is organized around five fundamental dimensions. This model is also known in personality psychology as the “Big Five” theory. Theoretical Foundations The Big Five Model is grounded in the view that human personality traits can be universally categorized under five core dimensi
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Miray GÜR

Hans Jürgen Eysenck (March 4, 1916, Berlin – September 4, 1997, London) was a German-born British psychologist. He is especially known for his contributions to personality theory, intelligence research, and behavioral psychotherapies. He aimed to ground psychology on experimental and measurable foundations and emphasized the role of biological factors in personality. Eysenck was a pioneering figure in the modernization of personality psychology and the development of psychometrics. Early Life an
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Nida Üstün