Chapter 7

Chapter 7 - Chapter7 AbnormalPsychology Spring2011 Dr.Coles...

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Chapter 7 Mood Disorders and Suicide Abnormal Psychology Spring 2011 Dr. Coles
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Mood Disorders Mood disorders are also known as  affective disorders Extremes of emotion—or  affect —are  common to all mood disorders Deep depression or soaring elation Other symptoms or co-occurring disorders  may also be present, but abnormal mood  is the defining feature 2
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3 What Are Mood Disorders? In mood disorders, disturbances of mood  are intense and persistent enough to be  clearly maladaptive
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4 What Are Mood Disorders? The two key moods involved are  mania   and  depression In  unipolar depressive disorders  the  person experiences only depressive  episodes In  bipolar disorders  the person  experiences both manic and depressive episodes
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5 The Prevalence of Mood  Disorders The lifetime prevalence of unipolar  depression is nearly 17% 12-month prevalence rates are nearly 7% About twice as common in women than men The lifetime prevalence for bipolar disorder  is near 1%
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6 Unipolar Mood Disorders Mild, brief depression can be normal and  adaptive Sadness, hopelessness, and pessimism  are common human experiences
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Depressions That Are Not  Mood Disorders Two fairly common causes of depression  that are generally not considered mood  disorders are: Loss and the grieving process Postpartum “blues” 7
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Mild to moderate version of depression  that lasts a long time For diagnosis, symptoms must persist for  at least 2 years (1 year in children) Intermittent normal moods occur briefly Lifetime prevalence of 2.5 to 6% 8 Dysthymic Disorder
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9 Major Depressive Disorder The diagnostic criteria for major depressive  disorder require That the person exhibit more symptoms than are  required for dysthymia That the symptoms be more persistent Subtypes of major depression include: Major depressive episode with melancholic features Severe major depressive episode with psychotic  features Major depressive episode with atypical features
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10 Major Depressive Disorder If major depression does not remit for  more than two years,  chronic major  depressive  disorder is diagnosed Some people who experience recurrent  depressive episodes show a pattern  commonly known as  seasonal affective  disorder
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Causal Factors in Unipolar  Mood Disorders Biological causal factors Psychological causal factors 11
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12 Biological Causal Factors Family studies and twin studies suggest a  moderate genetic contribution Altered neurotransmitter activity in several  systems is clearly associated with major  depression The hormone cortisol also plays a role Depression may be linked to low activity in  the left anterior or prefrontal cortex
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Figure 7.1: Number of Stressful  Life Events vs. Probability of Major  Depressive Episode 13
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Chapter 7 - Chapter7 AbnormalPsychology Spring2011 Dr.Coles...

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