Psychology Lecture 13
The twin study design is flawed; it has a confound, because it includes genetics as well as the
Slide 14: science is flawed, evolution is the scientific theory. This means there’s only one theory in its
category, because it’s very powerful, but that is not something that science does not favor, since in an
area you generally have multiple theories.
Altruistic behavior: where somebody puts themselves on the line to help someone else. Ex. Firefighters
charge into a building that is likely to collapse. This is not uniquely on humans; wolves for example howl
to warn other wolves of a hunter, but expose their own position to the hunter.
Altruism does not support evolution, since in evolution the driving force is reproductive success.
Altruism is a trait that can get an individual to be at risk in getting killed and the kinds that follow
altruism will eventually be ‘weeded’ out.
Slide 15: However, altruism can support evolution when it involves a group with the same genetic sets.
They try saving other family members in order for them to reproduce.