psychological disorders psychological disorder a “harmful dysfunction” in which behavior is...
TRANSCRIPT
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Psychological Disorders Psychological Disorder a “harmful
dysfunction” in which behavior is judged to be (text discussion):
Atypical not enough in itself
Disturbing varies with time and culture
Maladaptive harmful
Unjustifiable By what standard?
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Defined as Function Individual is not functioning adequately based on
either his/her standards or according to significant others in the person’s life.
Almost all the disorders we discuss have symptoms that everyone experiences. Diagnosis of disorder depends of intensity, length of time and how much it’s impacting on the person. Depression Anxiety Psychosis?
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Psychological Disorders Medical Model
concept that diseases have physical causes can be diagnosed, treated, and in most
cases, cured assumes that these “mental” illnesses can
be diagnosed on the basis of their symptoms and cured through therapy, which may include treatment in a psychiatric hospital
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Problems with medical model Effects of labeling person, especially if based
on limited number of symptoms May limit true understanding of behavior in favor
of “listed” symptoms and assumptions about outcome
Confirmation bias: future information interpreted in a biased way based on label
Similar problems can exist with diagnosis physical ailments
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Psychological Disorders
Bio-Psycho-Social Perspective assumes that biological,
sociocultural, and psychological factors combine and interact to produce psychological disorders
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Bio-Psycho-Social Approach
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Bio-Psycho-Social Approach These factors change over time. Hence, it’s
harmful to place a constant label on a person “Normal” behavior changes over cultures,
sub-cultures and time. E.g., is gang behavior or violence “abnormal”?
It’s more important to understand behavior (and symptoms) then worry about labels.
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Classifying Psychological Disorders
(medical approach dominates)
DSM-IV American Psychiatric Association’s
Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition)
a widely used system for classifying psychological disorders
presently distributed as DSM-IV-TR (text revision)
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Classifying Psychological Disorders Neurotic Disorder usually distressing but
that allows one to think rationally and function socially
Psychotic Disorder person loses contact with reality experiences irrational ideas and distorted
perceptions
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Rates of Psychological Disorders
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Anxiety Disorders Anxiety Disorders
distressing, persistent anxiety or maladaptive behaviors that reduce anxiety
Generalized Anxiety Disorder person is tense, apprehensive, and in a
state of autonomic nervous system arousal Persistence (out of control) Problem in identifying source
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Anxiety Disorders Panic Disorder
marked by a minutes-long episode of intense dread in which a person experiences terror and accompanying chest pain, choking, or other frightening sensation
Person comes to fear the panic attack itself and start to avoid any situations or places that might provoke an attack
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Anxiety Disorders Phobia
persistent, irrational fear of a specific object or situation
Obsessive-Compulsive Disorder unwanted repetitive thoughts (obsessions) and/or
actions (compulsions)
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Anxiety Disorders Common and uncommon fears
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Anxiety Disorders
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Causes: Learning Perspective
Fears are learned thought classical conditioning Stimulus generalization often occurs Development of behaviors to avoid the anxiety Perhaps also through observational learning
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Causes: Biological Influence Research with identical twins and non-human
primates suggest a genetic aspect
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Anxiety Disorders PET Scan of brain of
person with Obsessive/ Compulsive disorder
High metabolic activity (red) in frontal lobe areas involved with directing attention (impulse control and executive function)
Effectiveness of drug therapy
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Dissociative Disorders Dissociative Disorders
conscious awareness becomes separated (dissociated) from previous memories, thoughts, and feelings
Not uncommon when in a highly traumatic situation to feel “removed” from the situation. Problem is when this becomes more then a brief situation
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Dissociative Disorder Dissociative Identity Disorder
rare dissociative disorder in which a person exhibits two or more distinct and alternating personalities
formerly called multiple personality disorder At Issue: Is it a real phenomena
Skeptics– Everyone has difference aspects of their personality. These get exaggerated by person and perhaps encourage by therapist
Believers– Personality differences are dramatic (even handedness might be effected) and person may have many personalities (e.g., 3 faces of eve– 28) Origins from sever trauma especially in childhood
Both may be right
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Personality Disorders
Personality Disorders (vs. mood disorder) disorders characterized by inflexible and
enduring behavior patterns that impair social functioning
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Types of Personality Disorders Fearful, afraid of rejection, withdrawn Extreme eccentrics– “The Character” Narcissistic– Over exaggerates self
importance Borderline– Unstable identity, emotions,
relationships, etc.
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Personality Disorders Antisocial Personality Disorder
disorder in which the person (usually man) exhibits a lack of conscience for wrongdoing, even toward friends and family members
may be aggressive and ruthless or a clever con artist
Most criminals do not have this– they show concern for family and friends
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Personality Disorders PET scans illustrate reduced activation in a
murderer’s frontal cortexNormal Murderer
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Mood Disorders Mood Disorders
characterized by emotional extremes Major Depressive Disorder
a mood disorder in which a person, for no apparent reason, experiences two or more weeks of depressed moods, feelings of worthlessness, and diminished interest or pleasure in most activities
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Mood Disorders Manic Episode
a mood disorder marked by a hyperactive, wildly optimistic state
Bipolar Disorder a mood disorder in which the person
alternates between the hopelessness and lethargy of depression and the overexcited state of mania
formerly called manic-depressive disorder
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Mood Disorders-Depression Canadian depression rates
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Mood Disorders- Suicide
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Mood Disorders-Bipolar PET scans show that brain energy consumption rises
and falls with emotional switches
Depressed state Manic state Depressed state
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Mood Disorders-Depression
Altering any one component of the chemistry-cognition-mood circuit can alter the others
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Mood Disorders-Depression The vicious
cycle of depression can be broken at any point
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Schizophrenia Schizophrenia
literal translation “split mind” a group of severe disorders characterized
by: disorganized and delusional thinking disturbed perceptions inappropriate emotions and actions
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Schizophrenia Delusions
false beliefs, often of persecution or grandeur, that may accompany psychotic disorders
Hallucinations sensory experiences without sensory
stimulation
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Schizophrenia
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Causes of Schizophrenia Evidence of both chemical and anatomical
differences in the brain There are clear genetic predispositions
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Schizophrenia
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Causes of Schizophrenia Viral infections during pregnancy? Role of environment is unclear
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The End Is Psychology a Science? Future Courses