Zusammenfassung der Ressource
Parental Investment
- Maternal
- A01
- Females invest more than
males. Big egg small sperm
- Males never 100% sure its his,
reason why dont invest heavily
- Females invest more as when
infant born theyre helpless
- Costs of maternal investment makes random
mating costly for females. Have to carry infant for 9
months, then care for it next few years. Males invest
few moments of copulation and teaspoon of sperm
- A02
- Support...
- BAKER AND BELLIS- females must ensure good quality
genes. so marry man with resources, but shop around for
man with good genes. 14% of children not related to father
- GEHER- differences in
ANS arousal found males
are biologically less
prepared than females to
confront issues with
parenting
- However...
- DALY AND WILSON- expressed the
ricks of cuckoldry as being abandoned
which would stop income of
resources, and risk of abandonment
- Paternal
- A01
- Males invest less as
costs of random mating
is less for males
- Males must protect
themselves from cuckoldry
- Sexual Jealousy evolved from cuckoldry.
For males, more jelaous of sexual cheating
due to cuckoldry. For females, more jealous
of emotional focus as loss of resources
- Grandparents of
maternal line invest
more than paternal
- A02
- Support...
- BUSS- Male students want
sexually faithful, women
want emotionally faithful
- HOWEVER- Students so not generalisable
- However...
- BELSKY- males childhood
has an impact on their
investment to own child
- DUNBAR- if males increase success of childrearing
it will pay them due to joint parental care
- ANDERSON- fathers and step fathers invest
the same amount. dont discriminate
- REID- if males invest more
into offspring it can lead to
healthy lifestyle and decrease
in infant mortality
- HARRIS- men tend to respond with greater arousal
to sexual imager, challenging view sex difference in
jealousy is adaptive in males and females
- A03
- REDUCTIONIST- Rowe argues
male investment depends on
personal and social conditions
and personality of male.
- SOCIALLY SENSITIVE- Women
may not want to admit their
husband is not childs bio father
- CULTURAL BIAS- varies across cultures, as some
dont believe in monogomy so multiple husbands or
wives arent a problem so no sexual jealousy