PSYC 1023 Lecture Notes - Lecture 7: Twin, Limbic System, Asexuality

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Asexuality used to be considered a sexual disorder. However, it has nothing to do with low libido. A scale to do with measuring asexuality has not yet been fully developed. There is more evidence that supports the influence of biological factors determining sexuality than evidence supporting environmental factors. There is a concordance of 20-65% between identical twins. There are always higher rates of concordance between identical twins than fraternal twins. Women who have had certain hormones administered may give birth to children who might foster a predisposition for homosexuality. There is so(cid:373)e e(cid:448)ide(cid:374)(cid:272)e that (cid:449)o(cid:373)e(cid:374)"s se(cid:454)ual (cid:271)eha(cid:448)iour is (cid:373)ore fle(cid:454)i(cid:271)le tha(cid:374) that of men. Women are more likely to have a change in sexuality during adulthood than men. The need to affiliate has a very strong evolutionary basis. Evolutionary theory: explains why there is a gender effect. Women tend to give and receive more social support than men.

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