The biological theory has to do with his findings that individual differences in personality are biology based. This was based on his theory that there are three dimensions of personality (super factors). These dimensions of personality were extraversion-introversion, neuroticism, and psychoticism. To check his work by using cross-cultural studies that produced much the same conclusion. Hans also went a step farther in pointing out the results of many studies indicating that genetics play an important role in deciding the amounts of which of the three personality dimensions one might possess. There are many pro’s and con’s to this theory but most psychol

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