Genetic and biological factors (from the 2nd paragraph of the Wikipedia page, as you so helpfully pointed out above) play a role in the body's response to trauma.
Everyone has trauma, not everyone has DID from it, and that's where those factors come into play. Just as not everyone has red hair or the genetics for schizophrenia.
In the absence of trauma one can still be schizophrenic due to neurochemistry. DID does not form in the absence of trauma, but we cannot prove that because we cannot purge trauma from life.
Everyone has trauma, not everyone has DID from it, and that's where those factors come into play. Just as not everyone has red hair or the genetics for schizophrenia.
In the absence of trauma one can still be schizophrenic due to neurochemistry. DID does not form in the absence of trauma, but we cannot prove that because we cannot purge trauma from life.