PSY 3171 Lecture Notes - Lecture 12: Bipolar Disorder, Mood Disorder, Mania

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3171
• Professor: Allison Jane Ouimet

Document Summary

Heritability of bipolar disorders is as high as 85% Relatives of people with major depressive disorder have no elevated risk for mania. Relatives of people with bipolar disorder have heightened risk for mania and depression. 70% chance if a twin has mood disorder, 2-3x higher among identical than fraternal. If a twin has major depression than the chance of the other twin developing any mood disorder is 40%, more likely to be depressive than bipolar disorder. Bipolar is 2-3x more likely to occur with identical twins. Bipolar disorder creates risk for any mood disorder, major depressive disorder only increases risk of major depressive disorder. Genetics cause 40% of mood disorders overall (seemingly less influence for men) 60-80% environmental cause for depression (but not bipolar) Bipolar is more significantly influenced by biology. If a twin has bipolar disorder your chance of developing major depressive disorder are limited. Concordance rate refers to your chance of developing the disorder in colour.