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Unformatted text preview: person. A lot of personality research has been going on for a long time. Some of the oldest and ongoing personality research started in the 1920s. What are the determinants of personality? People say that 40% of personality is genetically determined. This is not a pure number, but people refer to it as the magic number. Comes from behavioral genetic twin studies. There are also environmental determinants like birth order, family size, parents, culture, etc. Also depends on the situation....
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- Spring '09