Psychology 1000 Lecture : Genetics and Heritability

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

Document Summary

Topic: genetics and heritability (cont"d) h2 = _sg____ Does not indicate the extent to which genes are responsible for the expression of the trait. Taps the relative contribution of genes to overall variation in population. Hair colour in inuit (cannot be defined as there is no variance, top of equation is 0) No variability, then heritability is next to 0 or undefined. * h2 = 0, but genes are responsible for expression of hair colour. * differences within a group due entirely to genes (poor soil plant, different heights) * differences between groups are due entirely to environment (fertile soil, same height) Consider jim lewis and jim springer: same wives" names, same house, same characteristics, but never met. Oskar was raised in germany as a nazi youth. 1869 relatives of intelligent people were also intelligent. Believes that intelligence was unitary (mental quickness) Not saying that i. q is genetically determined.