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Transcript of 1 Psychological Disorders Anxiety Disorders Generalized Anxiety Disorder and Panic Disorder ...
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Psychological Disorders
Anxiety Disorders Generalized Anxiety Disorder
and Panic Disorder
Phobias
Obsessive-Compulsive Disorders
Post-Traumatic Stress Disorders
Anxiety Disorder Explanation
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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 and apprehension.
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 which may include feelings of terror, chest pains, choking, or other frightening sensations.
Anxiety is a component of both disorders. It occurs 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 an object 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 brain of a person with Obsessive-Compulsive Disorder (OCD). High
metabolic activity (red) in the frontal
lobe areas are involved with
directing attention.
Brain Imaging
Brain image of an OCD
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Post-Traumatic Stress Disorder
Four or more weeks of the following symptoms constitute post-traumatic
stress disorder (PTSD):
1. Haunting memories
2. Nightmares3. Social withdrawal
4. Jumpy anxiety
5. Sleep problems
Bettm
ann/ Corbis
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Resilience to PTSD
Only about 10% of women and 20% of men react to traumatic situations and develop PTSD.
Holocaust survivors show remarkable resilience against traumatic situations.
All major religions of the world suggest that surviving a trauma leads to the
growth of an individual.
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Explaining Anxiety Disorders
Freud suggested that we repress our painful and intolerable ideas, feelings,
and thoughts, resulting in anxiety.
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The Learning Perspective
Learning theorists suggest that fear
conditioning leads to anxiety. This anxiety
then becomes associated with other objects or events (stimulus
generalization) and is reinforced.
John Coletti/ Stock, B
oston
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The Learning Perspective
Investigators believe that fear responses are inculcated through observational learning.
Young monkeys develop fear when they watch other monkeys who are afraid of snakes.
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The Biological Perspective
Natural Selection has led our ancestors to learn to fear snakes, spiders, and other animals. Therefore, fear preserves the
species.
Twin studies suggest that our genes may be partly responsible for developing fears
and anxiety. Twins are more likely to share phobias.
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The Biological Perspective
Generalized anxiety, panic attacks, and
even OCD are linked with brain circuits like the anterior cingulate cortex.
Anterior Cingulate Cortexof an OCD patient.
S. U
rsu, V.A
. Stenger, M
.K. S
hear, M.R
. Jones, & C
.S. Carter (2003). O
veractive action m
onitoring in obsessive-compulsive disorder. P
sychological Science, 14, 347-353.
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Psychological Disorders
Somatoform Disorders
Mood Disorders Major Depressive Disorders
Bipolar Disorder
Mood Disorder Explanation
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Somatoform Disorders
Physical symptoms that seem as if they are part of a general medical condition, however no general medical condition, other mental disorder, or substance is present. In this case psychological conflicts may becoming translated into physical problems or complaints. With the number one complaint being of some type of physical symptom, it is no wonder this disorder is often discovered in a general medical setting.
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Somatoform Disorders
• Somatization Disorder (formally called Hysteria): unexplained physical complaints
• Hypochondriasis: preoccupation with the fear of having a serious disease
• Body Dysmorphic Disorder: Preoccupation with an imagined or exaggerated defect in physical appearance
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Mood Disorders
Emotional extremes of mood disorders come in two principal forms.
1. Major depressive disorder2. Bipolar disorder
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Major Depressive Disorder
Depression is the “common cold” of psychological disorders. In a year, 5.8%
of men and 9.5% of women report depression worldwide (WHO, 2002).
Chronic shortness of breath
Gasping for air after a hard run
Major Depressive DisorderBlue mood
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Major Depressive Disorder
Major depressive disorder occurs when signs of depression 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 mood and major depressive disorder. It is
a disorder characterized by daily depression lasting two years or more.
Major DepressiveDisorder
Blue Mood
DysthymicDisorder
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Bipolar Disorder
Formerly called manic-depressive disorder. An alternation between depression and
mania signals bipolar disorder.
Multiple ideas
Hyperactive
Desire for action
Euphoria
Elation
Manic Symptoms
Slowness of thought
Tired
Inability to make decisions
Withdrawn
Gloomy
Depressive Symptoms
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Bipolar Disorder
Many great writers, poets, and composers suffered from bipolar disorder. During their
manic phase creativity surged, but not during their depressed phase.
Whitman Wolfe Clemens Hemingway
Bettm
ann/ Corbis
George C
. Beresford/ H
ulton Getty Pictures L
ibrary
The G
ranger Collection
Earl T
heissen/ Hulton G
etty Pictures L
ibrary
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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 theory of 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 to depression 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 in families. The rate of depression is higher in identical (50%) than fraternal twins (20%).
Linkage analysis and association studies link
possible genes and dispositions for
depression.
Jerry Irwin Photography
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Neurotransmitters & Depression
Post-synapticNeuron
Pre-synapticNeuron
Norepinephrine Serotonin
A reduction of norepinephrine and serotonin has been
found in depression.
Drugs that alleviate mania reduce
norepinephrine.
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The Depressed Brain
PET scans show that brain energy consumption rises and falls with manic and
depressive episodes.
Courtesy of L
ewis B
axter an Michael E
. P
helps, UC
LA
School of M
edicine
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Social-Cognitive Perspective
The social-cognitive perspective suggests that depression 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.
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Psychological Disorders
Schizophrenia Symptoms of Schizophrenia
Subtypes of Schizophrenia
Understanding Schizophrenia
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Schizophrenia
If depression is the common cold of psychological disorders, schizophrenia is
the cancer.
Nearly 1 in a 100 suffer from schizophrenia, and throughout the world over 24 million
people suffer from this disease (WHO, 2002).
Schizophrenia strikes young people as they mature into adults. It affects men
and women equally, but men suffer from it more severely than women.
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Symptoms of Schizophrenia
The literal translation is “split mind.” A group of severe disorders characterized by
the following:
1. Disorganized and delusional thinking.
2. Disturbed perceptions. 3. Inappropriate emotions
and actions.
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Other forms of delusions include, delusions of persecution (“someone is following me”)
or grandeur (“I am a king”).
Disorganized & Delusional Thinking
This morning when I was at Hillside [Hospital], I was making a movie. I was surrounded by movie stars … I’m Marry Poppins. Is this room painted blue to get me upset? My grandmother died four weeks after my eighteenth birthday.”
(Sheehan, 1982)
This monologue illustrates fragmented, bizarre thinking with distorted beliefs called delusions (“I’m Mary Poppins”).
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Disorganized & Delusional Thinking
Many psychologists believe disorganized thoughts occur because of selective attention
failure (fragmented and bizarre thoughts).
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Disturbed Perceptions
A schizophrenic person may perceive things that are not there (hallucinations). Frequently
such hallucinations are auditory and lesser visual, somatosensory, olfactory, or gustatory.
L. B
erthold, Untitled. T
he Prinzhorn Collection, U
niversity of Heidelberg
August N
atter, Witches H
ead. The Prinzhorn C
ollection, University of H
eidelberg
Photos of paintings by K
rannert Museum
, University of Illinois at U
rbana-Cham
paign
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Inappropriate Emotions & Actions
A schizophrenic person may laugh at the news of someone dying or show no
emotion at all (apathy).
Patients with schizophrenia may continually rub an arm, rock a chair, or remain motionless for hours (catatonia).
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Subtypes of Schizophrenia
Schizophrenia is a cluster of disorders. These subtypes share some features, but
there are other symptoms that differentiate these subtypes.
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Positive and Negative Symptoms
Schizophrenics have inappropriate symptoms (hallucinations, disorganized
thinking, deluded ways) that are not present in normal individuals (positive symptoms).
Schizophrenics also have an absence of appropriate symptoms (apathy,
expressionless faces, 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 negative symptoms.
When schizophrenia rapidly develops (acute/reactive) recovery is better. Such
schizophrenics usually show positive symptoms.
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Subtypes
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Understanding Schizophrenia
Schizophrenia is a disease of the brain exhibited by the symptoms of the mind.
Dopamine Overactivity: Researchers found that schizophrenic 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 the frontal cortex, thalamus, and amygdala of
schizophrenic patients. Adolescent schizophrenic patients also have brain lesions.
Paul T
hompson and A
rthur W. T
oga, UC
LA
Laboratory of N
euro Im
aging and Judith L. R
apport, National Institute of M
ental Health
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Abnormal Brain Morphology
Schizophrenia patients may exhibit morphological 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 in individuals who contracted a viral
infection (flu) during the middle of their fetal development.
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Genetic Factors
The likelihood of an individual suffering from schizophrenia is 50% if their identical
twin has the disease (Gottesman, 1991).
0 10 20 30 40 50Identical
Both parents
Fraternal
One parent
Sibling
Nephew or niece
Unrelated
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Genetic Factors
The following shows the prevalence of schizophrenia in identical twins as seen
in different countries.
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Psychological Factors
Psychological and environmental factors can trigger schizophrenia if the individual
is genetically predisposed (Nicols & Gottesman, 1983).
Genain Sisters
The genetically identical Genain
sisters suffer from schizophrenia. Two more
than others, thus there are contributing environmental
factors.
Courtesy of G
enain Fam
ily
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Warning Signs
Early warning signs of schizophrenia include:
Birth complications, oxygen deprivation and low-birth weight.
2.
Short attention span and poor muscle coordination.
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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Psychological Disorders
Organic Disorders
Personality Disorders
Dissociative Disorders
Rates of Psychological Disorders
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Organic Disorders
The central clinical feature of most organic psychiatric disorders is impaired cognitive functioning. Cerebral dysfunction can however also cause organic mood states, personality change as well as organic psychotic and even neurotic states. The cerebral dysfunction may be caused by a disruption of brain structures or by alterations in neurophysiology. A vast array of medical and surgical conditions are capable of producing this disruption, they may be systemic or originate within the brain.
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Personality Disorders
Personality disorders are
characterized by inflexible and
enduring behavior patterns that impair social functioning. They are usually without 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 Antisocial Personality Disorder
Like mood disorders and schizophrenia,
antisocial personality disorder has biological
and psychological reasons. Youngsters, before committing a crime, respond with lower levels of stress hormones than others
do at their age.
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Understanding Antisocial Personality Disorder
PET scans of 41 murderers revealed reduced activity in the frontal lobes. In a follow-up
study repeat offenders had 11% less frontal lobe activity compared to normals (Raine et
al., 1999; 2000).
Normal Murderer
Courtesy of A
drian Raine,
University of Southern C
alifornia
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Understanding Antisocial Personality Disorder
The likelihood that one will commit a crime doubles when childhood poverty is compounded with
obstetrical complications (Raine et al., 1999; 2000).
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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 or more distinct and alternating personalities,
formerly called multiple personality disorder.
Chris Sizemore (DID)
Lois B
ernstein/ Gam
ma L
iason
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DID Critics
Critics argue that the diagnosis of DID increased in the late 20th century. DID has not been found in other countries.
Critics’ Arguments
1. Role-playing by people open to a therapist’s suggestion.
2. Learned response that reinforces reductions in anxiety.
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Rates of Psychological Disorders
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Rates of Psychological Disorders
The prevalence of psychological disorders during the 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