Using Rasch measurement to validate the Big Five factor marker questionnaire for a Japanese university population.

In recent years, psychological studies have increasingly come to support the so-called "Big Five" or "Five-factor Model" (FFM) of human personality. However, the vast majority of research in this field has been undertaken in Western contexts, thus raising the question of how applicable the Big Five is to Asian populations. Moreover, nearly all research into the Big Five has relied on traditional techniques of statistical analysis (e.