Answer:
Bicultural self-efficacy.
Explanation:
The sense of assurance in one’s ability to participate and interact in a culture of origin and a second culture is referred to as<em> bicultural self-efficacy</em>. Bicultural self-efficacy is the ability to deal effectively with a culture other than the culture of origin and being able to understand and successfully communicate in both languages. It is also feeling confident and capable of having good social interaction.
If this question is based on Billy Milligan story, than yes :) There were real examples, although just a few of them during the whole history, or maybe noone knew about such a syndrome earlier.
Answer:
genetics.
cultures is called anthropology,