Relationships Flashcards
Evolutionary explanations for partner preferences:
What is meant by anisogamy
the reproductive material throughout ones entire life, including its worth
men: sperm is cheap as there is 100 million per ejaculation and can be reproduced within hours - can have sex with multiple people without consequence of wasted sperm
women: one egg per month - women have to be selective of who they let fertilise the egg - cannot afford to waste an egg
Evolutionary explanations for partner preferences:
Outline what is meant by sexual selection
type of natural selection where individuals with certain traits are more likely to find a sexual mate and reproduce
these traits make them more attractive to the opposite sex or better at competing with the same sex for mates
Evolutionary explanations for partner preferences:
Name the two types of sexual selection
intersexual selection
intrasexual selection
Evolutionary explanations for partner preferences:
Outline intersexual selection as a type of sexual selection
where one sex (usually female) selects mates based on certain desirable characteristics
quality over quantity approach - want a quality reproductive mate as opposed to multiple crappy reproductive mates
Evolutionary explanations for partner preferences:
Outline intrasexual selection as a type of sexual selection
involves competing with others of the same sex (usually males) for access to mates. e.g. fighting for dominance, displays of strength
quantity over quality approach - want lots of reproductive mates no matter the quality
Evolutionary explanations for partner preferences:
Outline the potential evolutionary purpose of attraction to 0.7 hip to waist ratio
birthing is performed easier with a significantly reduced chance of the mother dying during birth
Evolutionary explanations for partner preferences:
Outline studies into hip to waist ratio
Swami and Furnham:
ideal hip to waist ratio is roughly 0.7
majority of supermodels have this same ratio
Evolutionary explanations for partner preferences:
Outline the potential evolutionary purposes of age preference in a partner
Men prefer younger women as they have more eggs and a higher chance of a healthy birth
Women prefer older men as they have more resources to provide
Evolutionary explanations for partner preferences:
Outline studies into the impact of age preferences in a partner
Buss:
Found men preferred young, physically attractive females in 37 different cultures
Found women preferred ambitious, older with vast resources
Evolutionary explanations for partner preferences:
Outline the potential evolutionary purposes of symmetry preference in a partner
symmetry is a measure of attractiveness
being symmetrical better attracts partners - increased chance of reproduction
Women become more symmetric during ovulation in order to attract a mate whilst she is the most fertile
Evolutionary explanations for partner preferences:
Outline studies into the purpose of symmetry in partner preference
Cartwright:
Found women with symmetrical breasts were more fertile than women with asymmetrical breasts - supports suggestion that symmetry means higher fertility
Evolutionary explanations for partner preferences:
give evaluations for the role of evolution in partner preferences
- Research support - Buss, Cartwright, Swami and Farnham
- Social sensitivity - it is the woman that choses the man, men have no choice
- Conflict - reproductive traits do not necessarily help survival or vice versa
- does not explain gay, bi and asexual
- does not explain people who don’t want kids - 2.1 children per woman required for population maintenance, only 1.5 being born
Name the male strategies used in mating
- courtship rituals
- size
- sperm competition
- mate guarding
- sneak copulation
Outline courtship as a male mating strategy
showing off genetic potential for offspring to inherit and resources to provide for a family
Outline size as a male mating strategy
larger bodies show physical strength and an ability to protect partner and offspring
Outline sperm competition as a male mating strategy
evolved to have larger testicles and faster sperm to increased sperm count and chance of impregnation
Outline mate guarding as a male mating strategy
keeping a close eye on partners to prevent unfaithfulness
Outline sneak copulation as a male mating strategy
being unfaithful to maximise offspring/survival of species