Genetic Factors Associated With Intelligence Test Performance Flashcards
1
Q
AO1
Twin studies
Cyril Burt
Bouchard Mcgue
A
Cyril Burt - studied 53 pairs of monozygotic twins in 1966 - correlation of 0.771
This research was originally on 15 pairs in 1945, 21 in 1955, 53 in 1966
0.770,0.771,0.770 correlation
Concluded genetics most imp factors
Bouchard and Mcgue - metanalysis of 111 twin studies - found even when MZ twins raised apart concordance rate (0.72) higher than DZ raised together
2
Q
AO2
Environment
Incorrectly identified
Biological approach
A
Environment - based on assumption DZ/MZ environment but actually MZ twins treated more similar
Incorrectly identified - studies during 40/50s could not be based on genetic material
Biological approach - concordance rate never 100% so clearly environ plays a role
