Psychology 2220A/B Lecture Notes - Lecture 21: Bipolar Ii Disorder, Cyclothymia, Major Depressive Disorder

• School: Western University
• Department: Psychology
• Course: Psychology 2220A/B
• Professor: Jody Culham

Document Summary

Need a predisposition to develop a psychiatric disorder (diatheses) and need stresses (situational factors). You need both of these together to get the disorder. Once the disorder begins, we get a positive feedback loop, which maintains the causes. These maintaining causes within the disorder keep the person stuck in the disorder. Dysthymia: less severe symptoms than major depression that last for 2+ years, lows aren"t so low, more of a negative to average mood. If there is no severely stressful life event then depression doesn"t manifest. But, if the person has a stressful life event the likelihood of them developing depression is highest. Identical co-twins of people with a history of major depression are most susceptible. Nonidentical co-twins of people with a history of major depression. Nonidentical co-twins of people with no history of major depression. Identical co-twins of people with no history of major depression.