Tuesday, April 24, 2012

4/24-4/26: Psychological Disorders


  • Psychological Disorder = ongoing pattern of thoughts, feelings and actions that are deviant, distressful and/or dysfunctional
    • has to be: deviant--------------> distressful
    • has to be: deviant------->distressful-------->dysfunctional
    • behavior judged to be atypical, disturbing, maladaptive and unjustifiable
  • DSM-IV = classifies psychological disorders
    • describes disorders
    • no explanations of causes
    • Defines Diagnostic process and 16 clinical syndromes
  • DSM-IV Axes
    • Axis 1: Clinical syndrome present?
      • 16 clusters
      • bigger motivator than 2 or 3
    • Axis 2: Personality Disorder or Mental Retardation?
    • Axis 3: General Medical Condition?
    • Axis 4: Psychosocial or Environmental problems?
    • Axis 5: Global Assessment of person's Functioning
      • 0-100
  • Axis 1: Clinical Disorders
    • 16 Clusters of Syndromes
    • Anxiety Disorders: distressing persistent anxiety or maladaptive anxiety-reducing behavior
      • Generalized anxiety disorder: Continually tense and apprehensive but can't ID cause
        • higher autonomic nervous system arousal
        • tough sleep
        • 2/3 women
        • mistreated as children
        • typically accompanied by depression
        • not over age 50
      • Panic disorder: Episodes of intense dread
        • 1/75 people escalate into Panic Attacks = terror, chest pain, choking, trembling, dizziness
        • Mistaken for heart attack
      • Phobia: persistent, irrational fear and avoidance of specific object
        • Specific phobias
        • Social phobia: intense fear of being scrutinized by others
        • Agoraphobia: fear of inescapable situations w/ no immediate help
          • avoid elevators, outside home, crowds
      • Obsessive-Compulsive Disorder (OCD): unwanted obsessions and/or compulsions
        • Obsessions
          • Persistent thoughts, ideas that invade person's consciousness
        • Compulsions
          • Repeated and rigid behaviors or mental acts people feel must perform to prevent/reduce anxiety
        • Obsessions-------> Anxiety; Compulsions Reduce anxiety
        • Anxiety rises if obsessions and compulsions avoided
        • Typical Small scale Obsessions = Normal people
          • Minor obsessions = adaptive
            • rituals relieve stress
        • Disorder = Interferes with normal social Functioning
          • Time-consuming = rituals and obsessions
          • Obsessions that something Terrible will happen
            • excessive hand-washing
      • Post-Traumatic Stress Disorder (PTSD): reliving traumatic event repeatedly via:
        • Symptoms
          • Haunting Memories
          • Nightmares
          • Social withdrawal
          • Anxiety 
          • Insomnia 
        • Symptoms present-  >= 4 Weeks
    • How do Anxiety disorders Develop?
      • Learning
        • Classical conditioning- unpredictable and uncontrollable bad events
          • ex: attacked on street. associate street with bad. fear elicited on streets
        • Observational Learning brings about fears
        • Operant Conditioning and OCD
          • associate fear with stimuli- rituals
      • Biology
        • Genetic Predisposition - particular fears and anxiety
        • Identical twins develop Similar Phobias together or apart
  • Dissociative Disorders
    • Dissociationsignificant aspects of experiences are kept separate and distinct
    • Individual experiences disruptions- typically response to traumatic event
      • pretend happened someone else, get rid of stress
    • Dissociative Identity Disorder (DID): 2 or more distinct and alternating Personalities
      • each personality = own Voice and Mannerisms
      • Alters = Dramatically Different characteristics
        • Vital statistics:
          • e.g. age, sex, race, and family history
        • Abilities and Preferences: Encyclopedic knowledge affected in DID
          • alters have different areas of expertise
      • Unique set of memories, behaviors, thoughts, and emotions = Alters
      • One dominates at a time
      • Primary/host personality = appear more often, who you are
      • Transition = sudden and dramatic
      • 100 Alters maximum
      • Typical types of Alters:
        •  Host- Exhausted and Depressed
        • Protector - Strong, Angry
        • Child - Scared, Hurt
        • Helper
        • Persecutor blaming one or more of the alters
      • Used to think 2 or 3 alters
        • now 15 = women 8= men
      • Late Adolescence or Early Adulthood = Cases
        • Symptoms begin = before age 5
      • How Common?
        • 1000s
        • Reasons:
          • Clinicians Willing to make diagnosis
          • Diagnostic----->Accurate
        • Cons: All Cases = Iatrogenic (Artificial)
          • unintentionally produced by Practitioners
          • DID cases surfaced After treatment
      • Legitimacy = ??  Reluctant to Diagnose
    • Support for DID
      • Different Personalities = Different Memories
      • Test Differently
      • Differ Physiologically
        • voice, facial expressions, handwriting, allergies, 
      • Handedness differentiation
    • Criticisms for DID
      • 50% Denial
      • 2 per decade 1930-1960------> 20,000 in 1980s
      • # Alters: 3 to 12
      • Twin studies = No Genetic link
  • Mood Disorders
    • Emotional Extremes
    • Major Depressive disorder = 2 or more Weeks of Irrational Depression
      • feelings of worthlessness, diminished interest 
    • Bipolar disorder: Alternating between Depression and Mania
      • Mania: state of euphoria and great energy with grandiose optimism and self-esteem
    • Depression
      • common
      • Women = 2x Likely
        • Internalized response
      • ~50% recover = 6 weeks, 90% = year
        • most 1 other episode at some point
      • Symptoms differ dramatically for individuals
        • other aspects than sadness
      • 5 main areas of Functioning affected:
        • Emotional symptoms
        • Motivational symptoms
          • Everything requires Effort
        • Behavioral symptoms
          • exceedingly Negative self-view
        • Cognitive symptoms
          • Distracted Easily
        • Physical symptoms
          • Arm hurts but not physical cause
        • Symptoms Exacerbate each other
      • Stress = Trigger
        • More stressful events genereal predate depression
        • focus: Situation and Internal aspects
        • Genetic factors
          • Biological Predisposition
            • Relatives = 20%
            • General Population = 10%
          • Neurotransmitters: Serotonin and Norepinephrine
            • Serotonin = feel good
            • Norepinephrine = energizer
            • 1950s blood pressure medications caused depression
              • lowered serotonin, lowered norepinephrine
        • Socio-Cognitive factors
          • Learned Helplessness
            • Thinking of Event = Crucial
            • depressed when think that:
              • No Control over Reinforcements in lives
              • Responsible for Helpless state
          • Attribution theory focus (Explanatory style)
            •  Negative events attributes---> Internal, Global and Stable 
            • Negative Explanatory style = Blame Self 
            • Positive Explanatory style = Blame Others
            • = Helplessness and possibly Depression
            • positive = blame environment
            • No Hopelessness = No Depression
        • Socio-Cultural Causes
          • Social Support = Key
            • Perceived Availability of Social Support
            • Marital status
            • Isolation and Lack of Intimacy 
      • Cycle of Depression
        • #1 Stressful Experience
        • #2 Negative Explanatory Style
        • #3 Depressed mood
        • #4 Cognitive and Behavioral changes------> #1 again
    • Bipolar disorder
      • Onset = 15 to 44 years of age
      • Episodes Subside eventually but Recur later
      • Equally Common
      • Mania Symptoms (5)
        • Emotional
          • Active, powerful search of outlet
        • Motivational
          • Need for Excitement, Involvement, Companionship
        • Behavioral
          • Very Active - Move and Talk Rapidly
        • Cognitive
          • Overly Optimistic and prone to Poor Judgment/ No Planning
        • Physical
          • High Energy - little to no rest
    • Causes of Depression v Bipolar
      • Originally thought relationship b/w high Norepinephrine levels and mania
      • Low Serotonin may permit Norepinephrine activity to define form disorder will take
        • Low Serotonin + Low Norepinephrine = Depression
        • Low Serotonin + High Norepinephrine = Bipolar
  • Schizophrenia
    • Misconceptions:
      • NOT Dissociative Identity disorder
      • DO NOT tend to be Violent toward self or others
      • Not all cases = Chronic
        • 1/3 Chronic 1/3 Episodes 1/3 Complete Remission
        • 10% = Hospitalized Life
      • Prevalence
        • 1/100 people world
        • Equal across Gender
          • Men get symptoms = Earlier
        • Lower levels = More Frequently
        • Previously "catachall" diagnosis
          • much more refined today's DSM

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