I found a list of criticisms of the Minnesota study on the genetic influence of intelligence.
The list stated:
1) Bouchard relied on media coverage to recruit participants
2) Ethical concerns about the way Bouchard reunited the twins.
3) No adequate control to establish the frequency of contact between the twins prior to the study
4) Assumption that the twins who are raised together experience the same environment = "equal environment assumption" is not accurate.
