This question is based on the article "Gender identity: Nature Vs. Nurture", where it shows that the idea that gender identity originates from nurture and not nature, only gained evidence after Dr. John Money published the conclusion of his scientific experiment that confirmed that gender identity, as well as children's sexuality, is brought about through the environment, resources and the way that child was raised. Thus, gender identity is a constructive thing that is being molded from external factors in the child's personality, so we can say that Dr. John Money has the view that gender identity originates from nurture.
