Slides in this set

Slide 1

Preview of page 1

PARENTAL
AO1 INVESTMENT Approaches
AO2 (IDA)
·Relies heavily on evolutionary
Female investment
·Before birth: carrying baby in pregnancy ·Social approach: environmental pressure
·Birth: pain etc for women to stay home
·After birth: mothers milk, human babies reliant
until late teenagers
Males
·Resources
·Threat of cuckoldry >> sexual jealousy
AO2 (a contradiction)
Males have been found to
AO2(supportive research) invest as much in offspring
Geher er al. from their partners previous
·91 undergraduates partner as their own
·"parental investment perception inventory" questions offspring.
·No gender differences for answers
·ANS arousal measured
·Males had higher ANS arousal
·Supports females biologically more prepared for
investment
AO3 AO3
Lab experiment: AO3 Undergrad participants:
+high internal validity US study: -age bias
- Low external validity -cultural bias -not representative
-difficult to generalise…read more

Slide 2

Preview of page 2

PARENT-OFFSPRING CONFLICT
AO2 (a contradiction)
AO1
Many younger children don't bother
Conflict before birth
to compete >> cooperative traits.
·Eclampsia- high blood pressure of mother >>
more nutrients to foetus
After birth
·Parents want to direct resources away from
older children to use for younger ones
Sibling rivalry
·Offspring want more than their fair share
·Parents want children to value siblings AO2(Real life application)
Strategy to cope with sibling rivalry:
·Steer siblings along different
AO2 (supportive research) developmental paths
First born= close to reproductive age ·Reduces competition
Last born= vulnerable
Andrews
·Survey of 1600 US adolescents
·Suicide attempts more common of middle children
·Suicidal behaviour may be an adaptive response to increase
parental investment
AO3 AO3
AO3
Survey: Large sample size:
US study:
+quick, relatively easy +increases reliability
-cultural bias
-demand characteristics
-difficult to generalise…read more

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »