Do we need to have some genes to get the disorder, or is it possible to develop the disorder without the genes?
Are the genes the full explanation, or do some non-random environmental factors also have to be present?
Are genetic factors completely irrelevant, the whole explanation being environmental?
Do some genes increase the likelihood of developing the disorder, without being either sufficient or necessary?
KeywordsPersonality Disorder Genetic Influence Twin Study Borderline Personality Disorder Adoption Study
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