Psychology 1100E Lecture Notes - Lecture 7: Twin Study, Heritability, Compound Heterozygosity

• School: Western University
• Department: Psychology
• Course: Psychology 1100E
• Professor: Cheung, Hessel, Dumas, Cole

Document Summary

Concerned with the alleles: related to concordance estimate: statistics on co-occurrence of similar traits. Children should be mixed and sorted randomly to ensure a diverse set of groups: concordance: with higher levels in people with high relatedness, can point to a genetic explanation for traits, adoption studies: studies nurture vs nature. For example, studying whether a child is more similar to his adopted parents or his biological parents. i. e more similar to adopted parents, environment whereas if more closely related to biological parents then nature is suggested. In a study on schizophrenia 12% of biological members had schizophrenia, while. 3% for adopted children: twin studies, very powerful and valued. Identical twins have virtually the same genes: fraternal births have 50% of the same genes, for example, by taking a family of fraternal and identical twins, their environments can be isolated.