CAS PS 371 Lecture Notes - Lecture 20: Gender Dysphoria, Sexual Intercourse, Premarital Sex
2 Jul 2020
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Document Summary
Gender differences about what is normal and what is not. Prevalence of sexual practices (normal according to data) 15 or more partners over the lifetime: for males is 29% and for females is 9% 2 or more partners a year: for males is 17% and for females is 10% Oral sex but not vaginal sex goes down with age. Vaginal sex but not oral sex goes up with age. Homosexuality in twins: identical is 50% and fraternal is between 16-22% There is some genetic in uence but no speci c genes have been found. Homosexual behavior having sex with a man after the age of 18 years old. Multiple partners having 10 or more sexual partners in any one year period. There is a difference between the agreement of the number between twins. Age of initiation age at which the individual rst had sexual relations (table to the right side) Before 12 is excluded because it was not consensual sex.
