chapter 11.2 Flashcards
what is the theory of natural selection?
individuals with traits that are a good fit for their environment are more likely to survive and therefore reproduce
what is intrasexual selection?
a situation in which members of the opposite sex compete in order to win the opportunity to mate with members of the opposite sex
what is an example of intrasexual selection?
when deers will lock horns and fight to try to win the opportunity to reproduce with a female deer
why is intrasexual selection evolutionarily advantageous?
because the animals most likely to become dominant are the strongest and/or smartest and there fore fir for that time a place better. this causes each generation to become stronger and smarter
what is intersexual selection?
a situation in which members of one sex select a mating partner based on their desirable traits
what is an example of intersexual selection?
male birds displaying their bright feathers and perfuming intricate dances or songs to attract females
what is the darker function of brightly coloured birds?
bird with bright coloured feathers must be fast in order to make sure that their feathers do not attract prey, and this mental trait would be passed on to generations
what are some things straight women prefer in a mate?
taller 6 feet
good posture
not very hairy
what are some things that straight men prefer in a mate?
slightly shorter than them
full lips
high cheekbones
small chin
do people find symmetrical faces more attractive?
yes
are all elements of intersexual selection due to our genes?
no
what are some traits that are not based on genes?
clothing
poster
what are some things that men and women look for in a longterm partner?
love
kindness
commitment
character
emotional maturity
what are some things that men looked for in a longterm partner?
physical beauty
youth
other reproductive related traits
what are some things that women look for in a longterm partner?
strong financial prospects
status
good health
is socioeconomic status more important to men or women?
women, a persons financial status had a much greater effect on females willingness to enter relationships than a mans willingness
are men much more willing to engage in “sex only” relationships regardless of SES or attractiveness?
yes
what is SES?
socioeconomic status
what is the large difference between women and men in looking for longterm partners?
women are much more impacted by a potential partner’s socioeconomic status that men are
why do women care more about a potential mates socioeconomic status?
women have a limited number of eggs and a finite opportunity to pass on their genes to another generation so they care more about the resources required to raise offspring
why would men be more attracted to younger women?
because they have an infinite amount of sperm and can reproduce forever so the young, healthy women are more likely able to reproduce
who was one of the first scientists to tackle the topic of human sexual behaviour?
alfred kinsey
how did Alfred Kinsey study human sexual behaviour?
he would interview his college students and would publish his results, but his ,methods were flawed due to his very limited sample size and them being not anonymous interviews
what is now done to research sex?
anonymous questionares with larger samples
when Cindy meston and David buss asked more then 1500 college students for why they have sex, what were the 4 categories of reasons?
physical reasons
instrumental reasons
emotional reasons
feelings of insecurity