6. Problem with this theory being based on evolution
Its based on hunter-gatherer times and can be applied to this modern world as 2 species of apes closely related to humans show little or no parental investment wheras modern day fathers are much more involved in bringing up their children
Its deterministic to suggest this theory
Cause and effect of evolution and sex differences in parental investments cannot be found
7. What did Werner and Lotem find?
Male Cichild fish will choose the largest female as they are more likely to produce the largest eggs
Men don't discriminate in the way they treat their biological children and step children
Male Orb-weaving spiders are more likely to choose larger females when competition is high
Men who don't have full parental uncertainty will spend less time with offpsring
8. What did Anderson (1999) find?
Male cichild fish prefer largest females as they can produce more eggs
Men are more negatively affected by sexual infidelity as shown by physiological tests and self-reports
Men don't discriminate in the way they treat their own biological children and their partner's children from a previous relationship
Men who are unsure of their parental uncertainty will spend less time with these offspring?
9. Why are women less jealous than men in relationships?
Men are more paranoid about infidelity
Women have full parental certainty, whereas men don't have full parental certainty so this may lead to cuckcoldry and wasting their resources on another man's child so to stop infidelity and therefore cuckcoldry they act jealous as to stop it
