PSY 0010 Lecture Notes - Lecture 18: Suicidal Ideation, Low Birth Weight, Major Depressive Disorder
Document Summary
20th: the professor will be creating a final exam and study guide this week, depressive and bipolar disorders: causes, biological perspective a. i. There is evidence of a genetic predisposition for depressive and bipolar disorders a. ii. Identical twins are more likely to show the same diagnosis than fraternal twins a. iii. The heritability of major depressive disorder is estimated to be about 37% a. iii. 1. Of the variability we see, 37% of diagnosis can be accounted for with genetics a. iv. The heritability of bipolar disorder is estimated to be about 85% a. iv. 1. If one twin is diagnosed with bipolar disorder, the chances are 7/10 that the other twin will also be diagnosed with bipolar disorder a. v. Linkage analysis is one way researchers try to find genetic causes a. v. 1. They compare the dna from affected and unaffected family members to see which genes are contributing to certain disorders a. v. 2. Often, there is still an interaction between genes and the environment a. vi.
