The truths about dating and mating pdf
In humans, females make a larger parental investment than males (i.e.
nine months of gestation followed by childbirth and lactation).
In some cultures, a marriage may be arranged by the couple's parents or an outside party. Research on human mating strategies is guided by the theory of sexual selection, and in particular, Robert Trivers' concept of parental investment.
Trivers defines parental investment as “any investment by the parent in an individual offspring that increases the offspring's chance of surviving (and hence reproductive success) at the cost of the parent's ability to invest in other offspring.” Trivers posited that differential parental investment between males and females drives the process of sexual selection, which leads to the evolution of sexual dimorphism in mate choice, competitive ability, and courtship displays (see also secondary sex characteristics).
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The person flirting sends out signals of sexual availability to another, and hopes to see the interest returned to encourage continued flirting.
One classic study found that when college students were approached on campus by opposite-sex confederates and asked if they wanted to "go to bed" with him/her, 75% of the men said yes while 0% percent of the women said yes.
Evolutionary mechanisms for short-term mating are evident today.
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