Psychology 1000 Lecture Notes - Lecture 12: Gene Mapping, Autosome, Muscle Atrophy

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

H2 = variance due to genes / total variance. Estimate of how much observed variability due to genetic factors alone. Does not indicate extent to which genes are responsible for expression of trait. Taps relative contribution of genes to overall variation in population. Applies to groups (variance), not to individuals. H2 will increase as genetic diversity increases less genetic diversity - closer to 0. 1869- relatives of intelligent people were also intelligent. Believes that intelligence was unitary (mental quickness) one thing. Large scale study of twins reared apart. English school system based upon the study. Same person taking the iq test a month apart 0. 87. H2 = . 72 hereditability of identical twins living apart. Of the observed variability in measured iq, we can attribute 72% to genetic factors. Important assumption: no environmental differences for identical versus fraternal. Absolute difference scores: show that ge(cid:374)eti(cid:272)ally if you"re the sa(cid:373)e or if you thi(cid:374)k you are identical you are similar.