Chapter 15- Psychological Disorders 1 Flashcards

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1
Q

Defining Psychological Disorders

A

different does not equal disorder

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2
Q

Medical models

A

mental illnesses = medical illnesses
illness, diagnosis, and therapy or treatment of psychological disorders
medicine perspective-> treat it clinically

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3
Q

Compendium de Psychiatrie

A

first published classification system of mental disorders
1883, Emil Kraepelin
biological nature of mental illness

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4
Q

International Classification of Diseases (ICD)

A

classification of psychological disorders
published by world health organization
preferred in Europe + India
currently in 10th edition

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5
Q

Diagnostic and Statistical Manual

A

first official classification system for diagnosing mental disorders in North America (US)
third edition -> away from theory and more on scientific evidence + clinical observation

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6
Q

DSM-5

A

current edition, scientific evidence + clinical observations
North American perspective of psychological illness
goes beyond NA perspective-> consistent with international standards (like ICD) and talking about disorders in different countries
classifying disorders based on shared symptoms
defines mental disorder as a syndrome

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7
Q

Mental disorder

A

is a syndrome: a set of related conditions of clinically significant disturbances of thoughts, feelings, or behaviours

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8
Q

The 4 D’s for diagnosing behaviour as disordered:

A

Disturbance
Disfunction
Distress or Disability
Deviant***

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9
Q

Disturbance

A

disturbance of thought, emotion, or behaviour
mental disorders are different from physical disorders that affect physiological and body processes
ex: person has hypothyroidism (underactive thyroid gland) may exhibit signs of depression
if depression due to hypothyroidism (physical disorder) -> diagnosis of major depression is NOT appropriate

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10
Q

Disfunction

A

of biological or developmental processes
interferes with everyday functioning
ex: participating in everyday social relationships, holding a regular job, or being productive
sometimes its a risk to yourself + others

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11
Q

Distress or Disability

A

in everyday life (especially in relationships + work)
leads to discomfort, pain, anguish
either in person or in others (especially family)
ex: why we say a person is “suffering” from a disorder

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12
Q

Deviant**

A

thought, emotion, or behaviour
deviant = different from the norm/different from what most people do
but only if also dysfunctional
deviance alone is not enough
ex: Albert Einstein was deviant/different from the norm in his intelligence + creativity
but he was NOT suffering from a psychological disorder

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13
Q

Notes on the 4 D’s

A

behaviours that possess only 1 or 2 of these 4 D’s -> not classified as disordered
if a behaviour is culturally accepted -> cannot be a disorder
ex: hallucinations of shamans

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14
Q

DSM-5 describes __ major categories of disorder

A

22, covers +350 disorders

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15
Q

Culture-bound syndromes

A

mental disorders found in certain cultures

ex: Southeast Asian cultures-> certain men suffer from koro
koro: belief that one’s genitals are retracting into one’s body

Middle East-> people suffer from zar
zar: the belief that they are possessed by spirits
run around in fits of laughter, shouting, singing

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16
Q

Some disorders spread from culture to culture

A

anorexia was extremely rare in China-> fear of being fat wasn’t a symptom-> people that suffered complained of bloated tummy
Widely publicized case of anorexia in 1994 led to the death of a Hong Kong teen
rates of anorexia increased dramatically in China
increase in prevalence-> changed in symptoms of anorexia
Chinese anorexics complained mostly of their fear of being fat
disorder became westernized

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17
Q

Controversy of the DSM-5

A

Classifying disorders based on shared symptoms
too many categories, may be old fashioned

DSM medicalizes normal behaviour
see psychology in the real world

Ignores biology
ignores that diseases should be classified by shared underlying biological factors
Five major psychiatric disorders
Autism spectrum disorder, ADHD, bipolar, depression, and schizophrenia have a common genetic cause
one general dimension/factor underlies all of the major psychological disorders

Mental disorders are not as distinct and different as the DSM-5 categories imply

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18
Q

How Common Are Mental Disorders?

A

very common
2.8 million Canadians (1/10) have at least 1/6 mental or substance use disorders
Almost half (46%) of the adults in North America will suffer from at least one psychological disorder
More than half of people diagnoses will have 2+ disorders

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19
Q

____ of people with psychological disorders do not seek out help

A

40%
due to the stigma: shame surrounding mental illness
Barriers: Embarrassment + discrimination

50% of people receiving treatment for depression were willing to tell their friends or bosses
+50% of those who suffered from mood, anxiety, or substance use disorders-> reported feeling embarrassed + faced discrimination

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20
Q

Many Canadians hold negative attitudes towards people suffering from mental illness

Misconception + Reality

A

Misconception: People with psychological disorders are unstable + dangerous
Reality: Majority of people with a psychological disorder never commit violent acts -> more likely to be victims

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21
Q

comorbidity

A

existence of 2 or more disorders at the same time

fear-based disorders (phobias + panic disorder) develop first -> predict the onset of other disorders later in life

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22
Q

Is Overusing the Internet a Disorder?
People in South Korea starved their 3-month old to play an online fantasy game, Prius Online
In the parent’s version of Prius Online, they were raising a virtual baby

A

DSM-5 includes a category called “Internet Gaming Disorder”

due to lack of evidence-> its classified as a “Condition for Further Study”

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23
Q

Internet Gaming Disorder/ A Condition for Further Study in DSM-5

A

Any 5 of 9 points must be present during a year period for diagnosis

Preoccupation with internet games (not internet gambling)
Withdrawal when games taken away (irritability, sadness, anxiety)
Tolerance (more time to be satisfied)
Unsuccessful attempts to stop/control habit
Loss of interest in previous hobbies + entertainment
Excessive use despite knowledge of their psychological problem
Deceives family, friends, and therapists about how much they play the game
Use of internet games to cope/escape negative mood
Jeopardized or loss of significant relationship, job, education due to internet activity

Some of these criteria are signs of addiction
tolerance, mood regulation, disruption of relationships, job, or school

Some people experience withdrawals (irritation or anger) when computer/smart phone is not available

Is this a real disorder or an example of “medicalizing” normal behaviour?

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24
Q

Mobile addiction

A

excessive, impulsive checking and use of mobile device

especially in dangerous/illegal contexts (like driving)

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25
Q

Overuse of mobile devices

A

has deleterious effects

impaired cognition and task performance while multitasking

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26
Q

Neurodevelopmental Disorders (according to DSM-5)

A

psychological disorders prominent during childhood

include intellectual disabilities (formerly called mental retardation) and learning disabilities

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27
Q

Subtypes of Neurodevelopment Disorders

A

ADHD
ASD
ASPERGERS
Schizophrenia

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28
Q

Attention deficit hyperactivity disorder (ADHD)

A

neuro-developmental disorder

The inability to:
focus attention for more than a few minutes
remain still and quiet
do careful work

To be diagnosed-> need to display all symptoms before age 12

5% to 10% of North American school-age kids and 3-5% of children worldwide meet diagnostic criteria for ADHD
Boys more likely to be diagnosed than girls at a ration of 2:1
ADHD begins in childhood -> continues into adulthood for 30%

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29
Q

Autism spectrum disorder (ASD)

A

neuro-developmental disorder
formerly known as Autism, autos=self
severe language and social impairment
repetitive habits
inward focused behaviours
extremely sensitive to sensory stimulation
have trouble integrating multiple sources of sensory information (sight, sound, and touch)
more interested in inanimate objects than in people + social activities
Difficulty with joint attention
believed to be over diagnosed-> rise is mostly due to increased awareness

ASD encompasses a range of disorders, from severe disability to high functioning

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30
Q

Joint attention

A

ability to make eye contact with others and to look in the same direction as someone else
ex: if a mom points at something she’s interested in
kid with ASD is less likely to look in the same direction
researchers who didn’t know diagnoses were able to correctly diagnose ASD 77% of the time just based off watching their eye contact in 1st b-day home videos

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31
Q

High functioning ASD

A
High functioning
children have impaired social interest and skills
restricted interests
may be quite advanced in speech
have above average intelligence
ex: aspergers
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32
Q

Asperger Syndrom

A

high functioning autism
engaging adults in long winded + professorial (relating to professor aka really smart person) discussions on a narrow topic
named based of Hans Asperger who first described it
DSM-5 eliminated it as a separate diagnostic category
people still idenify w/ it and call themselves “Aspies”

33
Q

Causes of Neurodevelopment Disorders

A

Neurodevelopmental disorders sometimes stem from genetic factors
often remain latent (repressed) unless triggered by environmental condition

34
Q

Cause of ASD

A

Head size is an indicator of possible ASD
brain is smaller than normal at birth
grows much faster during first few years of life than the brains of non-autistic children
abnormal rate of brain growth, due to genetics
frontal lobes (processes social information) less connected in ASD children than normal kids
amygdala in ASD kids is 13% larger
Brain of a 5 year old with ASD = brain of 13 year old
they got big ole brains

35
Q

Theory about the origin of ASD

A

based on mirror neurons

mirror neurons
fire both when a person performs a behaviour and when they see someone else performing that same behaviour
involved in social behaviours: observational learning, imitation, language learning
children with ASD deficient in these skills
mirror neurons malfunction in kids with ASD

36
Q

Cause of ADHD

A

Environmental factor: if mother smokes while pregnant
Genetic factor: smoking during pregnancy leads to conduct + impulse problems only if the child has 1/2 of the dopamine reputake transporter genes

Prenatal smoke exposure + dopamine genotype alone is not significantly associated with increased behaviour disorders

Environmental factor: excessive sugar consumption
clinical studies do NOT support relationship between amount of sugar consumed + hyperactivity

Brain activity of people with ADHD
Low levels of brain activation
Understimulated brain

37
Q

Contradictory effects of ADHD medication:

A

giving ADHD kids a stimulant to calm them down
stimulant elevates their abnormally low nervous system activity
require less stimulation and activity from environment

38
Q

psychotic disorders

A

disorders of thought and perception
inability to distinguish between real and imagined perceptions
ex: schizophrenia

39
Q

schizophrenia

A

involves profound disturbances in thought and emotion, specifically problems with perception
ex: hallucinations
“split mind”
Emil Kraepelin 1890’s viewed disorder as a split from reality
not a split attitude or split personality
less common than depression
if a first-degree relative (biological parent, sibling, or child) has the disorder, odds of a person having it rise to 10%

40
Q

Major Symptoms of Schizophrenia

A

Conditions
At least two of the following symptoms must persist for one month
At least one of the symptoms must come from the first three (delusions, hallucinations, or disorganized speech)

Symptoms of Schizophrenia
Delusions
Hallucinations
Disorganized speech
Grossly disorganized behaviour or catatonic behaviour 
immobile and unresponsive, though awake
Negative symptoms
not speaking or being unable to experience emotion
41
Q

The symptoms of schizophrenia fall into three major categories

A

Positive symptoms, negative symptoms, cognitive symptoms

42
Q

Positive symptoms

A

Positive Symptoms
presence of abnormal thoughts and behaviours in people with schizophrenia (not seen in people without the disorder)
addition of schizophrenic thoughts

43
Q

Examples of Positive Symptoms

A

Hallucinations
convincing sensory experiences that occur in the absence of an external stimulus
brain receives false sensory input
experienced as real
its not as if someone is talking to them
hear voices, are convinced someone is living inside of them
defining feature of psychosis
auditory hallucinations are most common: hearing voices in head

Brain activation during Hallucinations
Activates the brain in similar (NOT IDENTICAL) to real external stimulation

Delusions
false beliefs or exaggerations
despite evidence to the contrary
ex: the idea one is a famous person/Jesus

44
Q

Similarities and differences between brain activation during hallucinations and brain activation during real external stimulation

A

Similarities:
activation in:
auditory cortex of temporal lobe during auditory hallucinations
visual cortex of occipital lobe during visual hallucinations
are similar to real auditory + visual stimuli
Wernicke’s area activated (speech comprehension)

Differences
lack of activity in frontal lobes
person is unable to monitor and determine source of images or sounds

45
Q

Negative Symptoms

A

absence of normal thoughts and behaviours

harder to diagnose and treat than +

46
Q

Examples of Negative Symptom

A
non responsiveness
emotional flatness
immobility
striking of strange poses (catatonia)
reduction of speaking
inability to complete tasks
47
Q

Cognitive Symptoms

A

involves deficits in information processing

problems working memory, attention, verbal+ visual learning,

48
Q

Examples of Cognitive Symptoms

A
Problems with
working memory
attention
verbal + visual learning
memory
reasoning
problem solving
speed of processing
disordered speech
speech follows grammatical rules, but content makes no sense
49
Q

Disordered Speech

A

word salad
speech of people with schizophrenia
may follow grammatical rules
content makes no sense

50
Q

neologisms

A

making up new words in schizophrenic people

51
Q

Typical characteristic of Schizophrenia

A

Poor integration of perceptual processes

People with schizophrenia have more trouble putting a fragmented image together and perceiving the picture as a whole

52
Q

diathesis-stress model

A

biological predispositions + stress/abusive environments = psychological disorders
interaction between biology + environment

53
Q

There are two stages to the diathesis-stress model

A

Biological-genetic foundation/ Dispositon

Environmental Event
occurs after conception during critical point in development
ex: maternal infection, chronic stress, use of drugs (weed + amphetamines)

54
Q

Explanations of Schizophrenia

A

Biology interacts with Environment (diathesis stress model)

Genetics
schizophrenia is 70-85% due to genetics
19 genes contribute to schizophrenia
Genes alone DO NOT CAUSE Schizophrenia
one identical twin can have it, the other one might not

Environment
more abuse + neglect children experience in early home lives-> more likely to suffer from schizophrenia later
abuse + neglect during critical periods of brain growth and development-> smaller overall brain size and enlarged ventricles in middle of brain (butterfly shapes)

55
Q

Two major brain abnormalities characteristic of schizophrenia due to abusive environment

A

smaller overall brain size

enlarged ventricles in the middle of the brain

56
Q

Another explanation for schizophrenia

A

Biological Factors
maternal infection
brain
neurochemistry

57
Q

Maternal Infection and Schizophrenia

A
Maternal infections
Prenatal exposure to infections and diseases
influenza
rubella
toxoplasmosis
herpes

increased risk of schizophrenia and deficits in brain development
effects don’t exist during 1st and 2nd trimester of pregnancy (month 1 to month 6)
higher immune cell activity in adult schizophrenic brains and people at risk

58
Q

Another explanation for schizophrenia

A

Abnormal brain development before birth -> schizophrenia

59
Q

Brain Abnormalities in Schizophrenics

A

Dysfunctional prefrontal cortex
problems with working memory
reduced and excessive activity in that area
contains dysfunctional genes that regulate synapses

Smaller hippocampus
impairments in learning and memory formation

Enlarged ventricles in the middle of the brain

60
Q

Problems in Communications between Neurons

A

People without schizophrenia
neural networks in close groups
orderly + chaotic firing of neurons
essential for learning and memory

Schizophrenics
Neural networks are:
less clustered
less efficient
more disorderly
*especially in frontal lobes
61
Q

Neurochemistry of Schizophrenia

A

prevailing view was the dopamine hypothesis

62
Q

Dopamine hypothesis

A

states that schizophrenics have an excess of dopamine in certain areas of brain

63
Q

Evidence of dopamine hypothesis

A

Amphetamines stimulate dopamine release and therefore may mimic hallucinations + delusions of schizophrenia
amphetamines trigger symptoms

Early antipsychotic drugs that block dopamine receptors are somewhat effective at treating positive symptoms

64
Q

Arvid Carlsson

A

discovered dopamine’s role in Schizophrenia + Parkinsons
Nobel prize
dopamine main NT involved in schizophrenia
contributed to the dopamine hypothesis
schizophrenia caused by excessive dopamine

65
Q

Problems with the dopamine hypothesis

A

Dopamine specific medications (tranquilizers) somewhat effectively treats only POSITIVE SYMPTOMS
Minority of people who receive traditional drug treatment effectively manage their symptoms

66
Q

Drugs that led to schizophrenia that does not involve dopamine

A

PCP
ketamine (animal tranquilizer)
does not affect dopamine production
block functioning of NT glutamate and its receptor NMDA

67
Q

Glutamate

A

major excitatory NT
regulates dopamine
crucial in learning, memory, neural processing, and brain development
amplifies certain neural signals -> some stimuli more important than others
crucial to selective attention

68
Q

Glutamate deficiencies

A

explains some symptoms of schizophrenia
gene related to glutamate plays a role in schizophrenics prefrontal cortex functioning
why some schizophrenics have trouble with selective attention, cognitive control, and working memory

69
Q

Depressive disorder (according to DSM-5)

A

disturbance in mood and emotion that prevents people from functioning effectively in everyday life
highest order of the depressive orders
contains all forms of depression
several forms

70
Q

Major depressive disorder

A

long term low mood
lack of motivation
low energy

71
Q

Symptoms of Major Depressive Disorder

A

To be diagnosed with major depressive disorder, one must have at least 5/9 of the following symptoms for at least two consecutive weeks:

Depressed mood that stays low all day for several days
Reduced interest or pleasure in doing anything
Significant change in body weight (dieting or overeating)
Sleep disturbances
Sluggishness or restlessness
Daily fatigue or loss of energy
Daily feelings of worthlessness, self reproach, or excessive guilt
Lack of ability to concentrate or think clearly
Recurrent thoughts of death or suicide

Symptoms must impact daily functioning and be a source of distress

72
Q

Occurrence of major depressive disorder depends on __ and __

A

age and sex
3 times more likely in 18-29 year olds than in people +60
females experience it 2-3 times more than men
Depression is the leading cause of disability worldwide

73
Q

Persistent depressive disorder (PAD)

A

form of depression
same symptoms of major depressive disorder, but are mild intensity
longer in duration (most of the day + time for 2 years)

74
Q

Most disabling aspect of depression

A

the lack of interest or ability to feel anything (positive or negative)
rarely about feeling blue (sadness is the emotion most associated with depression)

75
Q

People with depression are at a higher risk of __

A

committing suicide

76
Q

Nature and Nurture Explanations of Depression

A

Depression is caused by a combination of brain chemistry and life circumstances
Depression = brain chemistry + environment, aka diathesis-stress model

77
Q

Diathesis-stress view on the explanation of Depression

A

Stressful Environment
abusive/extremely stressful environments -> increase risk of depression
people who reported the worst childhood were more likely to be depressed than kids with no bad childhoods

interacts with biological dispositions and personality traits to produce depression
especially in people who have experience trauma/abuse/stress

78
Q

Stressful events

A

ex: social rejection: activates hypothalamic-pituitary-adrenal (HPA) system -> increases risk of depression
stress causes accelerated aging of cells-> depression

79
Q

Experimental induced stress in animals

A

kills neurons in the hippocampus -> symptoms of depression