PSY 450 Lecture Notes - Lecture 18: Cochlea, Twin Study, Bisexuality

• School: University of Oregon
• Department: Psychology
• Course: PSY 450
• Professor: Pranjal Mehta

Document Summary

Optional quiz 6 (thursday june 15th at 10:15 am in our normal classroom) this will be cumulative and cover material in weeks 1-9. (will not cover this lecture"s notes) Thought paper (for those with extensions) due by saturday (june 10th) by 11:59. This is due june 13th at 5pm via canvas. An erotic attraction for individuals of the same/opposite sex, can be measured on a continuum. Very little is known about endocrine factors that play a role in heterosexual or hormonal development. Estimates of non-heterosexual orientation in western countries 2-20% Women more likely to report bisexuality than men. Twin studies suggest that there is a genetic component to homosexuality (30-50%) Gender atypical behavior correlates somewhat with homosexual orientation (r=-. 30) Organization-activational hypothesis: prenatal hormone exposure predicts sexual orientation in females, but evidence is mixed in males. Otoacoustic emmisions: low-level sound emitted by the cochlea either spontaneously or evoked by an auditory stimulus. Less frequent in lesbians compared to heterosexual women.