Relationships Flashcards
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what are the 5 sub-topics in the relationships topic?
Evolutionary explanations for partner preferences
Factors affecting attraction
Theories of romantic relationships
Virtual relationships
Parasocial relationships
What is meant by natural selection?
‘survival of the fittest’ and those who are strong enough and adapted will survive and if not then they will die
What is meant by adaption?
The way in which a species changes over time in response to the environment and how they can best survive in their circumstances
What is sexual selection?
A type of natural selection where individuals with certain traits are more likely to find a mate a reproduce. These traits can make them more attractive to the opposite sex or better at competing with the same sex for mates
What are the two types of sexual selection?
Intersexual selection
Intrasexual selection
What is intersexual selection?
Where one sex selects mates based on certain desirable characteristics, like bright feathers in birds or strong build in humans
What does desireable characteristics suggest in intersexual selection?
Signals good genes or high fitness, increasing the chances of survival for their offspring
What approach is taken in intersexual selection and why?
quality over quantity -> Ova are rarer than sperm and require greater energy to produce
Why are females more likely to use intersexual selection?
Females make a greater investment in time, commitment, and other resources before, during, and after birth. Therefore they may be quite fussy, and wisely choose a partner who can offer resources (food, territory, and protection)
What is intrasexual selection?
This involves competition within the same sex for access to mates. Examples include physical fights, displays of strength, or other forms of competition. The winner gains more mating opportunities, passing their successful traits to the next generation
What approach is taken by intrasexual selection?
quantity over quality
What hypothesis does the sexual selection lead to and what does it suggest?
Sexy sons hypothesis - where a female mates with a male who has desirable characteristics, and this ‘sexy’ trait is inherited by their son. This increases the likelihood that successive generations will mate with their offspring
What is anisogamy?
the difference between male and female sex cells - gametes sperm and egg
What have researchers found in relation to ratio and attractiveness?
That the most attractive hip to waist ratio for women to have is 0.70
What are the 5 male strategies for mating?
Courtship rituals
Size
Sperm competition
Mate guarding
Sneak copulation
What is meant by courtship rituals?
Allows showing off of genetic potential and resources
What is meant by ‘size’ as a men’s mating strategy?
bigger body sizes demonstrate physical strength and an ability to protect partner and offspring from threats
What is meant by ‘sperm competition’ as a male mating strategy?
men have evolved to have bigger testicles and faster swimming sperm
What is meant by mate guarding as a male mating strategy?
keeping a close eye on partners to prevent unfaithfulness
What is meant by sneak copulation as a male mating strategy?
being unfaithful
What are the three female mating strategies?
Handicap hypothesis
Sexy Sons hypothesis
Courtship
What is meant by handicap hypothesis?
Some women may pick men with a ‘handicap’ as it shows an ability to thrive despite adversities. This may explain why some women are attracted to men who drink a lot and do drugs
What is meant by the sexy sons hypothesis as a female mating strategy?
Females select males they deem physically attractive as they are likely to pass this trait onto their children, increasing the offsprings chances of reproducing in the future
What is meant by courtship as a female mating strategy?
Dating is an important strategy for females to establish a mans worth to produce offspring and support them