You should probably look for theories about the causes of various sexual orientations. Is it biological, psychological?
This article may help you find what you need in your text.
Thank you Ms. Sue. While I'm still very confused about this assignment you are at least being more helpful than the instructor.
Gender identity is the gender you believe you are, usually the one you are labeled as at birth.
Sexual orientation is whether you are attracted to members of the same sex, opposite sex or both.
It can become confusing. Let's say you are a male, but believe you are a female trapped in a male body (gender identity). Viewing yourself as female, you are attracted sexually to males (orientation). Although to others, it may appear you are homosexual, according to your gender identity, your attraction is heterosexual.
I don't know if this helps or make it more confusing.
I understand what sexual identity and sexual orientation are. That wasn't my question. The issue I am having is that my instructor is expecting a power point that summarizes the different perspectives on these topics. The problem I am having is that because it is an online course with no lecture there has been no discussion about any perspectives or theories and there's nothing in the text about theories and the instructor won't answer my questions.
PsyDag added some useful information. There must be something in your text about sexual identity and orientation. Does the author give different ideas about the causes or results of sexual identity and orientation?
If you still don't find that information, you can use PsyDag's information plus anything else you van glean from the Internet -- and do your PowerPoint on these ideas.