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Chapter 14: Psychological Disorders Abnormal Behavior The medical model Think of abnormal behavior as a disease Combats stereotypes associated with mental illness What is abnormal behavior? Deviant Maladaptive from social norms prevents normal functioning Causing personal distress Figure 14.2 Normality and abnormality as a continuum Understanding Mental Illness Epidemiology Prevalence Distinguishing features Etiology Percent of population Diagnosis The study of a disorder in a population. Includes the following: Causes Prognosis Predictable outcome Problems with Diagnostic Labeling Rosenhan Study Stigma associated with being labeled as “mentally ill” Figure 14.5 Lifetime prevalence of psychological disorders Psychodiagnosis: The Classification of Disorders American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders – 4th ed. (DSM - 4) Five Axes Axis I – Clinical Syndromes Axis II – Personality Disorders or Mental Retardation Axis III – General Medical Conditions Axis IV – Psychosocial and Environmental Problems Axis V – Global Assessment of Functioning Axis I Clinical Syndromes Anxiety Disorders Somatoform Disorders Dissociative Disorders Mood Disorders Schizophrenic Disorders Anxiety Disorders Prevalence = 19% of pop. Generalized anxiety disorder “free-floating anxiety” Phobic disorder Specific focus of fear Panic disorder and agoraphobia Obsessive compulsive disorder (2.5%) Obsessions – intrusive thoughts (ex. I must check the stove) Compulsions –rituals to reduce anxiety (ex. checking stove) Posttraumatic Stress Disorder Agoraphobia Agoraphobia gave us Paula Deen! Married at 18, pregnant at 19, and orphaned at 23, she became depressed and then severely agoraphobic for the next two decades. For 20 years, she focused on cooking for her family because it was something she could do without leaving the house. “I could concentrate on what was in my pots and block out what was in my head,” she said. Shame and bewilderment prevented her from seeking help, she said, and no one except her husband knew the depth of her illness. “Some days I could get to the supermarket, but I could never go too far inside,” Ms. Deen said. “I learned to cook with the ingredients they kept close to the door.” – NY Times 2.28.2007 Etiology of Anxiety Disorders Biological factors Genetic predisposition, anxiety sensitivity GABA circuits in the brain (drugs to reduce anxiety) Concordance Rates - %age of relatives with same disorder Conditioning and learning Acquired through classical conditioning or observational learning Maintained through operant conditioning Cognitive factors Judgments of perceived threat Personality Neuroticism Stress—a precipitator Figure 14.6 Twin studies of anxiety disorders Figure 14.7 Conditioning as an explanation for phobias Prompt: The doctor examined little Emma’s growth. Figure 14.8 Cognitive factors in anxiety disorders Somatoform Disorders Somatization Disorder Feels real, not faking Conversion Disorder Impairment of specific organ Glove Anesthesia Hypochondriasis Preoccupation with illness/medicine Feels their disease is too rare for doctors to properly diagnose Etiology Reactive autonomic nervous system Personality factors Cognitive factors The sick role Factitious disorders Made up or self inflicted physical symptoms Munchausen Being ill on purpose Consciously aware that they are not ill, however they fake symptoms for sympathy Munchausen By Proxy Keeping someone else ill for sympathy Usually involves a parent harming a child Dissociative Disorders Dissociative amnesia Forgetting personal information for a brief episode No physical cause for the amnesia, is a reaction to stress Dissociative fugue (.2%) Sudden, unexpected travel away from home or one's customary place of work, with inability to recall one's past Dissociative identity disorder (.01%) Formerly Multiple Personality Disorder Three Faces of Eve (1957) Etiology severe emotional trauma during childhood Controversy Sybil Media creation? Mood Disorders Major depressive disorder Unipolar 2x more women Bipolar disorder (formerly manic-depressive disorder) (2.6%) One or more manic episodes with periods of depression Lasting *at least* one week Cyclothymic disorder – chronic but mild symptoms Etiology Genetic vulnerability – more for unipolar Neurochemical factors- low levels of seratonin & norepinephrine Smaller hippocampus (8-10% smaller) Cognitive factors – pessimistic Interpersonal roots – hard to make friends when you act like Eeyore. Bipolar Disorder Manic Episode Depressive Episode Euphoric Gloomy Impatient Hopeless Delusions of grandeur Obsessive worrying Hyperactive Withdrawn Increased sex drive Delusions of guilt & Impulsive behavior disease Decreased sex drive Irritable Tired Requiring less sleep Talkative Racing thoughts Discussion Questions What is schizophrenia? Do you know of any real life examples of schizophrenia? How does Hollywood depict schizophrenia? Schizophrenic Disorders (Psychotic Disorders) General symptoms Delusions and irrational thought Deterioration of adaptive behavior Hallucinations Disturbed emotions Prognostic factors Rule of quarters 25% will live independently with medication 25% will live require in patient care 25% will end up homeless 25% will commit suicide Subtyping of Schizophrenia Four Patient Examples 4 subtypes Paranoid type Catatonic type Marked by stupor, unresponsiveness, posturing, mutism, and sometimes, by agitated, purposeless behavior Disorganized type Preoccupation with delusions; also involves auditory hallucinations that are related to a single theme, especially grandeur or persecution Incoherence, grossly disorganized behavior, bizarre thinking, and flat or grossly inappropriate emotions Undifferentiated type Any type of schizophrenia that does not have specific paranoid, catatonic, or disorganized features or symptoms Examples of Catatonic Schizophrenia Schizophrenia Symptom Classification Positive Symptoms Negative Symptoms Disorganized Speech Avolution (apathy) Delusions Alogia (poverty of speech) Hallucinations/disorders of Anhedonia (lack of perception pleasure) Catatonia/catatonic immobility Flat or inappropriate affect (emotional response) Echolalia Asociality Etiology of Schizophrenia Genetic vulnerability Neurochemical factors Structural abnormalities of the brain The neurodevelopmental hypothesis Expressed emotion Precipitating stress Figure 14.18 The dopamine hypothesis as an explanation for schizophrenia Figure 14.20 The neurodevelopmental hypothesis of schizophrenia Personality Disorders Anxious-fearful cluster Avoidant, dependent, obsessive-compulsive Dramatic-impulsive cluster Histrionic, narcissistic, borderline, antisocial Odd-eccentric cluster Schizoid, schizotypal, paranoid Etiology Genetic predispositions, inadequate socialization in dysfunctional families Table 14.2 Personality Disorders Psychological Disorders and the Law Insanity M’naghten rule Involuntary commitment danger to self danger to others in need of treatment Figure 14.22 The insanity defense: public perceptions and actual realities Culture and Pathology Cultural variations Culture bound disorders Koro Windigo Anorexia nervosa