Relationships Flashcards
Natural selection
Process by which inherited characteristics that enhance survival are passed onto next generation
Process by which inherited characteristics that enhance survival are passed onto next generation
Natural selection
Adaption
Functional products of natural selection or sexual selection in human evaluation
Reproductive success
The degree to which an individual is successful in producing offspring that in turn are able to produce offspring of their own
Sexual selection
Competition for mates between members of the same sec which has an impact on the evolution of certain facial and bodily features
Inter-sexual selection
Preferred strategy of female- quality over quantity
Eggs are rarer than sperm and requires more energy to produce.
Females may be quite picky and choose a partner who can offer resources
Enhance a female’s reproductive success
Leads to men competing for the opportunity to mate with the fertile female
Sexy sons hypothesis
A female mates with a male who had desirable characteristics and this sexy trait is inherited by her son. Increases chance that successive generations of females will mate with her offspring
Intra-sexual selection
Prefer strategy of the male - quantity over quality
Refers to competition between males to be able to mate with a female
The winner of the competition gets to pass on its characteristics that’s helped him win to offspring
Singh research
Research has suggested that the most attractive hip to waist ratio is 0.70. Honest signal that a woman isn’t pregnant but is fertile
Male strategies
Courtships rituals
Size
Sperm competition
Mate guarding
Sneak copulation
Female strategies
Handicap hypothesis
Sexy sons hypothesis
Courtship
Courtship rituals
Allows showing off of genetic potential and resources
Allows showing off of genetic potential and resources
Courtships rituals
Size
Bigger body size Demonstrates physical strength
Sperm competition
Men have evolved to have bigger testicles and faster swimming sperm
Mate guarding
Keeping close eye on partners to prevent unfaithfulness
Keeping close eye on partners to prevent unfaithfulness
Mate guarding
Sneak competition
Being unfaithful can be beneficial to both parties
Handicap hypothesis
Some women may pick men with handicaps as it shows an ability to thrive despite adversities. May explain why some women are attracted to men who drink and take drugs a lot
Courtship
Dating is important strategy for females to establish a man’s worth to produce offspring
Evaluation of evolution explanations for partner preference
+ research singh
+research buss
-external validity (doenst take into account those who don’t want children)
- temporal validity (changing roles of men and women )
Self disclosure
Revelling of personal information about ourselves to an individual that we like
Social penetration theory
Altman and Taylor
Gradual process of revealing your inner self to someone. In romantic relationships it involves reciprocal exchange of information
Displays trust and greater understanding of eachother
Gradual process of revealing your inner self to someone. In romantic relationships it involves reciprocal exchange of information
Displays trust and greater understanding of eachother
Altman and Taylor social penetration theory