Psychological Disorders - Purduewillia55/120/LectureDisorders.pdf · unusual, and the abnormal....
Transcript of Psychological Disorders - Purduewillia55/120/LectureDisorders.pdf · unusual, and the abnormal....
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Psychological Disorders
Chapter 16
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Psychological Disorders
I felt the need to clean my room … spent four to fivehour at it … At the time I loved it but then didn't want
to do it any more, but could not stop … The clotheshung … two fingers apart …I touched my bedroom
wall before leaving the house … I had constant anxiety… I thought I might be nuts.
Marc, diagnosed withobsessive-compulsive disorder
(from Summers, 1996)
http://www.youtube.com/watch?v=Rn1OYlYzgm8&feature=related
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Psychological Disorders
People are fascinated by the exceptional, theunusual, and the abnormal. This fascination
may be caused by two reasons:
During various moments we feel, think, and actlike an abnormal individual.
Psychological disorders may bring unexplainedphysical symptoms, irrational fears, and suicidalthoughts.
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Psychological Disorders
To study the abnormal is the best way ofunderstanding the normal.
There are 450 million people suffering frompsychological disorders (WHO, 2004).
Depression and schizophrenia exist in all culturesof the world.
William James (1842-1910)
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Defining Psychological Disorders
Mental health workers view psychologicaldisorders as persistently harmful thoughts,
feelings, and actions.
When behavior is deviant, distressful, anddysfunctional psychiatrists and psychologists
label it as disordered (Comer, 2004).
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Deviant, Distressful & Dysfunctional
Deviant behavior(going naked) in oneculture may beconsidered normal,while in others it maylead to arrest.
Deviant behavior mustaccompany distress.
If a behavior isdysfunctional it isclearly a disorder.
In the Wodaabe tribe menwear costumes to attract
women. In Western societythis would be considered
abnormal.
Carol Beckwith
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Understanding PsychologicalDisorders
Ancient Treatments of psychological disordersinclude trephination, exorcism, being caged like
animals, being beaten, burned, castrated,mutilated, or transfused with animal’s blood.
Trephination (boring holes in the skull to remove evil forces)
John W. V
erano
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Medical Perspective
Philippe Pinel (1745-1826) from France, insistedthat madness was not due to demonic possession,
but an ailment of the mind.
Dance in the madhouse.
George W
esley Bellow
s, Dancer in a M
adhouse, 1907. © 1997 The A
rt Institute of Chicago
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Medical Model
When physicians discovered that syphilis led tomental disorders, they started using medical models
to review the physical causes of these disorders.
1. Etiology: Cause and development of thedisorder.
2. Diagnosis: Identifying (symptoms) anddistinguishing one disease from another.
3. Treatment: Treating a disorder in a psychiatrichospital.
4. Prognosis: Forecast about the disorder.10
Biopsychosocial Perspective
Assumes that biological, socio-cultural, andpsychological factors combine and interact to
produce psychological disorders.
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Classifying Psychological Disorders
The American Psychiatric Association rendereda Diagnostic and Statistical Manual of Mental
Disorders (DSM) to describe psychologicaldisorders.
The most recent edition, DSM-IV-TR (TextRevision, 2000), describes 400 psychological
disorders compared to 60 in the 1950s.
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Multiaxial Classification
Are Psychosocial or Environmental Problems(school or housing issues) also present?Axis IV
What is the Global Assessment of the person’sfunctioning?Axis V
Is a General Medical Condition (diabetes,hypertension or arthritis etc) also present?Axis III
Is a Personality Disorder or Mental Retardationpresent?Axis II
Is a Clinical Syndrome (cognitive, anxiety,mood disorders [16 syndromes]) present?Axis I
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Multiaxial ClassificationNote 16 syndromes in Axis I
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Multiaxial ClassificationNote Global Assessment for Axis V
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Goals of DSM1. Describe (400) disorders.2. Determine how prevalent the
disorder is.
Disorders outlined by DSM-IV are reliable.Therefore, diagnoses by different professionalsare similar.
Others criticize DSM-IV for “putting any kindof behavior within the compass of psychiatry.”
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Labeling Psychological Disorders
1. Critics of the DSM-IV argue that labels maystigmatize individuals.
Asylum baseball team (labeling)
Elizabeth Eckert, Middletow
n, NY
. From L. G
amw
ell and N
. Tomes, M
adness in America, 1995. Cornell U
niversity Press.
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Labeling Psychological Disorders
2. Labels may be helpful for healthcareprofessionals when communicating withone another and establishing therapy.
Rosenhan’s “study” - self-perpetuating aspects of labels
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Labeling Psychological Disorders
3. “Insanity” labelsraise moral andethical questionsabout how societyshould treat peoplewho havedisorders and havecommitted crimes.
Theodore Kaczynski(Unabomber)
Elaine Thompson/ A
P Photo
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Anxiety Disorders
Feelings of excessive apprehension and anxiety.
1. Generalized anxiety disorders2. Phobias3. Panic disorders4. Obsessive-compulsive disorders
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Generalized Anxiety Disorder
1. Persistent and uncontrollable tenseness andapprehension.
2. Autonomic arousal.3. Inability to identify or avoid the cause of
certain feelings.
Symptoms
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Panic Disorder
Minute-long episodes of intense dread whichmay include feelings of terror, chest pains,choking, or other frightening sensations.
Anxiety is a component of both disorders. Itoccurs more in the panic disorder, making
people avoid situations that cause it.
Symptoms
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Phobia
Marked by a persistent and irrational fear of anobject or situation that disrupts behavior.
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Kinds of Phobias
Phobia of blood.Hemophobia
Phobia of closed spaces.Claustrophobia
Phobia of heights.Acrophobia
Phobia of open places.Agoraphobia
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Obsessive-Compulsive Disorder
Persistence of unwanted thoughts (obsessions)and urges to engage in senseless rituals
(compulsions) that cause distress.
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A PET scan of the brainof a person with
Obsessive-CompulsiveDisorder (OCD). Highmetabolic activity (red)in the frontal lobe areas
are involved withdirecting attention.
Brain Imaging
Brain image of an OCD26
Post-Traumatic Stress Disorder
Four or more weeks of the following symptomsconstitute post-traumatic stress disorder
(PTSD):
1. Haunting memories2. Nightmares3. Social withdrawal4. Jumpy anxiety5. Sleep problems
Bettmann/ Corbis
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Resilience to PTSD
Only about 10% of women and 20% of menreact to traumatic situations and develop PTSD.
Holocaust survivors show remarkable resilienceagainst traumatic situations.
All major religions of the world suggest thatsurviving a trauma leads to the growth of an
individual.
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Explaining Anxiety Disorders
Freud suggested that we repress our painfuland intolerable ideas, feelings, and thoughts,
resulting in anxiety.
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The Learning Perspective
Learning theoristssuggest that fear
conditioning leads toanxiety. This anxiety
then becomesassociated with other
objects or events(stimulus
generalization) and isreinforced.
John Coletti/ Stock, Boston
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The Learning Perspective
Investigators believe that fear responses areinculcated through observational learning.
Young monkeys develop fear when they watchother monkeys who are afraid of snakes.
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The Biological Perspective
Natural Selection has led our ancestors to learnto fear snakes, spiders, and other animals.
Therefore, fear preserves the species.
Twin studies suggest that our genes may bepartly responsible for developing fears and
anxiety. Twins are more likely to sharephobias.
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The Biological Perspective
Generalized anxiety,panic attacks, and even
OCD are linked withbrain circuits like the
anterior cingulate cortex.
Anterior Cingulate Cortexof an OCD patient.
S. Ursu, V
.A. Stenger, M
.K. Shear, M
.R. Jones, &
C.S. C
arter (2003). Overactive action
monitoring in obsessive-com
pulsive disorder. Psychological Science, 14, 347-353.
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Dissociative Disorder
Conscious awareness becomes separated(dissociated) from previous memories,
thoughts, and feelings.
Symptoms
1. Having a sense of being unreal.2. Being separated from the body.3. Watching yourself as if in a movie.
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Dissociative Identity Disorder (DID)
Is a disorder in which a person exhibits two ormore distinct and alternating personalities,
formerly called multiple personality disorder.
Chris Sizemore (DID)
Lois Bernstein/ Gam
ma L
iason
Herschel Walker (DID)
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DID Critics
Critics argue that the diagnosis of DIDincreased in the late 20th century. DID has
not been found in other countries.
Critics’ Arguments
1. Role-playing by people open to atherapist’s suggestion.
2. Learned response that reinforcesreductions in anxiety.
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Mood Disorders
Emotional extremes of mood disorders come intwo principal forms.
1. Major depressive disorder2. Bipolar disorder
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Major Depressive Disorder
Depression is the “common cold” ofpsychological disorders. In a year, 5.8% of men
and 9.5% of women report depressionworldwide (WHO, 2002).
Chronic shortness ofbreath
Gasping for air after ahard run
Major Depressive DisorderBlue mood
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Major Depressive Disorder
Major depressive disorder occurs when signs ofdepression last two weeks or more and are not
caused by drugs or medical conditions.
1. Lethargy and fatigue2. Feelings of worthlessness3. Loss of interest in family & friends4. Loss of interest in activities
Signs include:
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Dysthymic Disorder
Dysthymic disorder lies between a blue moodand major depressive disorder. It is a disordercharacterized by daily depression lasting two
years or more.
Major DepressiveDisorder
BlueMood
DysthymicDisorder
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Bipolar Disorder
Formerly called manic-depressive disorder. Analternation between depression and mania
signals bipolar disorder.
Multiple ideasHyperactive
Desire for actionEuphoriaElation
Manic Symptoms
Slowness of thoughtTired
Inability to make decisionsWithdrawn
Gloomy
Depressive Symptoms
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Bipolar Disorder
Many great writers, poets, and composerssuffered from bipolar disorder. During their
manic phase creativity surged, but not duringtheir depressed phase.
Whitman Wolfe Clemens Hemingway
Bettmann/ Corbis
George C
. Beresford/ H
ulton Getty Pictures Library
The Granger Collection
Earl Theissen/ Hulton G
etty Pictures Library
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Explaining Mood Disorders
Since depression is so prevalent worldwide,investigators want to develop a theory of
depression that will suggest ways to treat it.
Lewinsohn et al., (1985, 1995) note that a theoryof depression should explain the following:
1. Behavioral and cognitive changes2. Common causes of depression
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Theory of Depression
3. Gender differences
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Theory of Depression
4. Depressive episodes self-terminate.5. Depression is increasing, especially in
the teens.
Post-partum depression
Desiree N
avarro/ Getty Im
ages
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Suicide
The most severe form of behavioral response todepression is suicide. Each year some 1 million
people commit suicide worldwide.
1. National differences2. Racial differences3. Gender differences4. Age differences5. Other differences
Suicide Statistics
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Biological Perspective
Genetic Influences: Mood disorders run infamilies. The rate of depression is higher inidentical (50%) than fraternal twins (20%).
Linkage analysis andassociation studies link
possible genes anddispositions for depression.
Jerry Irwin Photography
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Neurotransmitters & Depression
Post-synapticNeuron
Pre-synapticNeuron
Norepinephrine Serotonin
A reduction ofnorepinephrine andserotonin has been
found in depression.
Drugs that alleviatemania reduce
norepinephrine.
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The Depressed Brain
PET scans show that brain energy consumptionrises and falls with manic and depressive
episodes.
Courtesy of Lewis Baxter an M
ichael E. Phelps, U
CLA School of M
edicine
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Social-Cognitive Perspective
The social-cognitive perspective suggests thatdepression arises partly from self-defeating
beliefs and negative explanatory styles.
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Depression Cycle
1. Negative stressful events.2. Pessimistic explanatory
style.3. Hopeless depressed state.4. These hamper the way the
individual thinks and acts,fueling personal rejection.
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Example
Explanatory style plays a major role in becoming depressed.52
Schizophrenia
If depression is the common cold ofpsychological disorders, schizophrenia is the
cancer.
Nearly 1 in a 100 suffer from schizophrenia, andthroughout the world over 24 million people
suffer from this disease (WHO, 2002).
Schizophrenia strikes young people as theymature into adults. It affects men and womenequally, but men suffer from it more severely
than women.
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Symptoms of SchizophreniaThe literal translation is “split mind.” A group
of severe disorders characterized by thefollowing:
Disorganized and delusionalthinking.
Disturbed perceptions. Inappropriate emotions and
actions.
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Other forms of delusions include, delusions ofpersecution (“someone is following me”) or
grandeur (“I am a king”).
Disorganized & Delusional Thinking
This morning when I was at Hillside [Hospital], I wasmaking a movie. I was surrounded by movie stars …I’m Marry Poppins. Is this room painted blue to get meupset? My grandmother died four weeks after myeighteenth birthday.”
(Sheehan, 1982)
This monologue illustrates fragmented, bizarrethinking with distorted beliefs called delusions
(“I’m Mary Poppins”).
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Disorganized & Delusional Thinking
Many psychologists believe disorganizedthoughts occur because of selective attention
failure (fragmented and bizarre thoughts).
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Disturbed Perceptions
A schizophrenic person may perceive thingsthat are not there (hallucinations). Frequently
such hallucinations are auditory and lesservisual, somatosensory, olfactory, or gustatory.
L. Berthold, U
ntitled. The Prinzhorn Collection, U
niversity of Heidelberg
August N
atter, Witches H
ead. The Prinzhorn C
ollection, University of H
eidelberg
Photos of paintings by Krannert M
useum, U
niversity of Illinois at Urbana-C
hampaign
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Inappropriate Emotions & Actions
A schizophrenic person may laugh at the newsof someone dying or show no emotion at all
(apathy).
Patients with schizophrenia may continuallyrub an arm, rock a chair, or remain motionless
for hours (catatonia).
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Subtypes of Schizophrenia
Schizophrenia is a cluster of disorders. Thesesubtypes share some features, but there are
other symptoms that differentiate thesesubtypes.
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Positive and Negative Symptoms
Schizophrenics have inappropriate symptoms(hallucinations, disorganized thinking, deluded
ways) that are not present in normalindividuals (positive symptoms).
Schizophrenics also have an absence ofappropriate symptoms (apathy, expressionlessfaces, rigid bodies) that are present in normal
individuals (negative symptoms).
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Chronic and Acute Schizophrenia
When schizophrenia is slow to develop(chronic/process) recovery is doubtful. Such
schizophrenics usually display negativesymptoms.
When schizophrenia rapidly develops(acute/reactive) recovery is better. Such
schizophrenics usually show positivesymptoms.
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Subtypes
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Understanding Schizophrenia
Schizophrenia is a disease of the brain exhibitedby the symptoms of the mind.
Dopamine Overactivity: Researchers found thatschizophrenic patients express higher levels of
dopamine D4 receptors in the brain.
Brain Abnormalities
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Abnormal Brain Activity
Brain scans show abnormal activity in thefrontal cortex, thalamus, and amygdala of
schizophrenic patients. Adolescentschizophrenic patients also have brain lesions.
Paul Thompson and A
rthur W. Toga, U
CLA
Laboratory of Neuro
Imaging and Judith L. R
apport, National Institute of M
ental Health
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Abnormal Brain Morphology
Schizophrenia patients may exhibitmorphological changes in the brain like
enlargement of fluid-filled ventricles.
Both Photos: C
ourtesy of Daniel R
. Weinberger, M
.D., N
IH-N
IMH
/ NSC
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Viral Infection
Schizophrenia has also been observed inindividuals who contracted a viral infection
(flu) during the middle of their fetaldevelopment.
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Genetic Factors
The likelihood of an individual suffering fromschizophrenia is 50% if their identical twin has
the disease (Gottesman, 1991).
0 10 20 30 40 50Identical
Both parentsFraternal
One parentSibling
Nephew or nieceUnrelated
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Genetic Factors
The following shows the prevalence ofschizophrenia in identical twins as seen in
different countries.
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Psychological Factors
Psychological and environmental factors cantrigger schizophrenia if the individual is
genetically predisposed (Nicols & Gottesman,1983).
Genain Sisters
The genetically identicalGenain
sisters suffer fromschizophrenia. Two more than
others, thus there arecontributing environmental
factors.
Courtesy of Genain Fam
ily
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Warning Signs
Early warning signs of schizophrenia include:
Birth complications, oxygen deprivation andlow-birth weight.
2.
Short attention span and poor musclecoordination.
3.
Poor peer relations and solo play.6.Emotional unpredictability.5.
Disruptive and withdrawn behavior.4.
A mother’s long lasting schizophrenia.1.
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Personality Disorders
Personality disordersare characterized by
inflexible andenduring behavior
patterns that impairsocial functioning.They are usuallywithout anxiety,depression, or
delusions.
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Antisocial Personality Disorder
A disorder in which the person (usually men)exhibits a lack of conscience for wrongdoing, even
toward friends and family members. Formerly,this person was called a sociopath or psychopath.
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Understanding AntisocialPersonality Disorder
Like mood disordersand schizophrenia,
antisocial personalitydisorder has biological
and psychologicalreasons. Youngsters,before committing acrime, respond withlower levels of stresshormones than others
do at their age.
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Understanding AntisocialPersonality Disorder
PET scans of 41 murderers revealed reducedactivity in the frontal lobes. In a follow-up study
repeat offenders had 11% less frontal lobe activitycompared to normals (Raine et al., 1999; 2000).
Normal Murderer
Courtesy of Adrian R
aine, U
niversity of Southern California 74
Understanding AntisocialPersonality Disorder
The likelihood that one will commit a crime doubleswhen childhood poverty is compounded with
obstetrical complications (Raine et al., 1999; 2000).
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Rates of Psychological Disorders
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Rates of Psychological Disorders
The prevalence of psychological disorders duringthe previous year is shown below (WHO, 2004).
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Risk and Protective Factors
Risk and protective factors for mental disorders(WHO, 2004).
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Risk and Protective Factors