Elvis Polkowski
Elvis Polkowski voted up Sterling Wright's answer

I wrote this paper that sort answers the question. It takes the research on Schizophrenia and illustrates how a person can develop it either through biological means--it is in their genes and therefore gives them a predisposition to it, or through environmental influences--large amounts of stress over extended periods of time can lead a person … Read more

Elvis Polkowski
Elvis Polkowski voted up Anonymous' answer

That's okay. You do your paper- I I already did mine on this topic  30 years ago.

I will throw a kink in there though -"personality"  has a lot to do with how much of each -nature or nurture  -is absorbed or affected upon the person.  Your best bet is to study the case studies … Read more