English Final

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I am doing a PowerPoint for my final on the movie Psycho. I am doing a psychoanalysis theory on it. Basically it's the theory on how one is born with a sexual attraction for the parent of the opposite sex and competition with a parent of the same sex. My thesis is " how ones sexual desire for the parent of the opposite parent can drive them to insanity". What would be some good things to add to help support this. Thank you. 😁