Cluster (Quiz 3) Flashcards
Lectures 14
How many LGBTQ candidates were on the ballot in
November 2022?
678 (a record number)
What is included on the gender bread person?
- Gender identity
- gender expression
- biological sex
- sexual orientation
What makes up sexual orientation?
- Behavior
- Identity
- Sexual attraction
- sexual fantasy
- Sexual arousal
- Desire (includes attraction, fantasy, arousal)
How many people identified as bisexual/lesbian/gay in 2011?
– 3.4% of women
- 3.6% of men
Describe Gallup polls.
- Aim to be representative
- Cell and landline “random digit dial” method
- Other measures to attempt to reach proportionate number of individuals across geography and other variables
- Not completely unbiased (e.g., not all people have phones0
In 2021, what did Gallup show about LGBT identification in the U.S.?
It ticked up to 7.1%
What generation identified as LGBT the most?
Generation Z
Are more women or men bisexual in the U.S.?
Women (women are 6%, men are 2%)
Explain the ultimate and proximate explanations.
- Ultimate (causation in deep time – evolutionary): Why is the feature present?
- Proximate (causation in “near” time): How does that feature emerge now?
Complementary explanations (you want both and subsets within them for a complete understanding)
same-sex sexual behaviors that occur due to constraints are not the true evolutionary puzzles. The evolutionary mystery is…
Stable same-sex preference
What did Darwin say about inclusive fitness?
- Genes will spread over time if they increase an individual’s ability to survive and reproduce
- (increase individual fitness)
What insight did Hamilton give for inclusive fitness?
- Genes will also spread over time if they cause the
individual to do something that helps other individuals who possess copies of themselves to survive and reproduce - (increase inclusive fitness)
Does selection “care” which vehicle (individual) replicates the genes?
No, whichever genes are replicated the most
will spread.
What is Hamilton’s rule?
When rb > c, selection will favor a trait that makes me pay a cost to benefit someone else.
In the U.S. is there evidence that gay uncles
help siblings any more than straight uncles?
No
What are fa’afafine?
- third gender (male at birth) individuals attracted to men (”androphilic”)
- The presence of fa’afafine within families is associated
with greater reproduction of their relatives, possibly due
passing along of resources - Samoan study
What is the conclusion when asking if kin selection can explain same-sex preference?
- No good resolution to the puzzle
- Possibly some fitness advantage to female relatives of androphilic males, offsetting decrement in their own reproduction
Does bias differ by sex of principal investigator?
No
What are the types of sexual arousal?
- Subjective
- Genital
What are the conclusions of the experiment on men’s sexual arousal?
- Men’s sexual arousal is category specific
- Consistent results of genital and subjective
arousal
What are the conclusions of the experiment on women’s sexual arousal?
- Female genital sexual arousal (at least as measured!) is not category-specific; women respond about equally to all stimuli.
- Subjective arousal patterns are also quite
different than men’s. - Dissociation between subjective and genital arousal—what should we “believe”?
What are some differences between male and female non-heterosexuals?
- Timing: Men tend to know earlier and tend not to change their orientation, whereas women often do change (more later)
- Types: Men show bimodal distribution in attraction,
suggesting distinct types - Identification: Among non-hetero individuals: women more often identify as bi (than men) and men as exclusively gay (than women)
Describe sexual fluidity.
- More female bisexual arousal than male bisexual arousal in Chivers et al. study
- Different time courses: Men tend to “know” early in lives; women later
- More variation over the lifespans of women as compared with men
- Lesbians are more likely to have had heterosexual sex than gay men
- Suggests that explanations for sexual orientation in men and women will probably be very different
What are some common themes within
each sex?
– largely “sex-typical” mate preferences
– Trajectory and manifestation of sexual orientation shared within each sex