Defining Psychological Disorders
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Transcript of Defining Psychological Disorders
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Defining Psychological Disorders
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Defining Psychological Disorders
• Psychological Disorder: What Makes a Behavior “Abnormal”?• Anxiety and Dissociative Disorders: Fearing the World Around Us• Mood Disorders: Emotions as Illness• Schizophrenia: The Edge of Reality and Consciousness• Personality Disorders• Somatoform, Factitious, and Sexual Disorders
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Psychological DisorderWhat Makes a Behavior “Abnormal”?
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Psychological Disorder
• Learning Objectives1. Define “psychological disorder” and summarize the general causes of disorder.2. Explain why it is so difficult to define disorder, and how the Diagnostic and
Statistical Manual of Mental Disorders (DSM) is used to make diagnoses.3. Describe the stigma of psychological disorders and their impact on those who
suffer from them.
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Psychological Disorder
• abnormal psychology– the application of psychological science to understanding and treating mental
disorders• More psychologists are involved in the diagnosis and treatment of psychological
disorder than in any other endeavor.• About 1 in every 4 are affected by a psychological disorder during any one year.• The impact of mental illness is strongest on people from lower socioeconomic classes
or from disadvantaged ethnic groups.• People with psychological disorders are stigmatized by the people around them.
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Psychological Disorder
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Psychological Disorder
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Defining Disorder
• psychological disorder– n ongoing dysfunctional pattern of thought, emotion, and behavior that causes
significant distress, and that is considered deviant in that person’s culture• comorbidity
– occurs when people who suffer from one disorder also suffer at the same time from other disorders
– Because many psychological disorders are comorbid, most severe mental disorders are concentrated in a small group of people (about 6% of the population) who have more than three of them.
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Defining Disorder
• bio-psycho-social model• assumes that disorder is caused by
biological, psychological, and social factors
biological factors• come from the body•e.g., genes;
neurotransmitters.
psychological factors• come from the individual•e.g., patterns of negative
thinking; stress responses
social factors• come from society and
culture•e.g., socioeconomic status,
homelessness, abuse
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Defining Disorder
disordered behavior
unusual
distressing
dysfunctional
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Diagnosing Disorder: The DSM
• Diagnostic and Statistical Manual of Mental Disorders (DSM)
• provides a common language and standard criteria for classifying mental disorders
1952• first
edition
1994• DSM-IV,
last major revision
2000• DSM-IV-
TR, an update
2013DSM-V
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Diagnosing Disorder: The DSM
• The DSM organizes the diagnosis of disorder according to five dimensions (or axes) relating to different aspects of disorder or disability.
Axis I• major clinical disordersAxis II
• personality disordersAxis III• physical symptomsAxis IV• social and cultural factorsAxis V• global assessment of functioning
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Categories of Psychological Disorders Based on the DSM
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Categories of Psychological Disorders Based on the DSM
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Categories of Psychological Disorders Based on the DSM
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Categories of Psychological Disorders Based on the DSM
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Categories of Psychological Disorders Based on the DSM
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Diagnosis or Overdiagnosis? ADHD, Autistic Disorder, and Asperger’s Disorder
• attention-deficit/hyperactivity disorder– a developmental behavior disorder characterized by problems with focus,
difficulty maintaining attention, and inability to concentrate, in which symptoms start before 7 years of age
• ADHD can persist in adulthood, and up to 7% of college students are diagnosed with it.
• In adults the symptoms of ADHD include forgetfulness, difficulty paying attention to details, procrastination, disorganized work habits, and not listening to others.
• ADHD is about 70% more likely to occur in males than in females.
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Diagnosis or Overdiagnosis? ADHD, Autistic Disorder, and Asperger’s Disorder
• The diagnosis of ADHD has quadrupled over the past 20 years. It is now diagnosed in about 1 out of every 20 American children and is the most common psychological disorder among children in the world.
• Although ADHD may be overdiagnosed, most psychologists believe that ADHD is a real disorder caused by a combination of genetic and environmental factors.
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Diagnosis or Overdiagnosis? ADHD, Autistic Disorder, and Asperger’s Disorder
• autistic disorder (autism)– a developmental disorder
characterized by impaired social interaction and communication; by restricted and repetitive behavior; and in which symptoms begin before age 7
• Asperger’s disorder– a developmental disorder
affecting a child’s ability to socialize and communicate with others and in which symptoms begin before age 7
• The symptoms of Asperger’s are almost identical to those of autism.
Autistic Disorder Asperger’s Disorder
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Diagnosis or Overdiagnosis? ADHD, Autistic Disorder, and Asperger’s Disorder
• Diagnoses of autism-related disorders have increased dramatically, especially for milder forms of autism and Asperger’s.
• Disorders related to autism and Asperger’s disorder now affect almost 1% of American children.
• Current research suggests that autism-related disorders reflect biological causes. The heritability of autism may be as high as 90%.
• The American Psychiatric Association has proposed eliminating the term Asperger’s syndrome from the upcoming DSM-V.
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Psychological Disorder
• Key Takeaways– More psychologists are involved in the diagnosis and treatment of psychological
disorder than in any other endeavor, and those tasks are probably the most important psychologists face.
– The impact on people with psychological disorder comes both from the disease itself and from the stigma associated with disorder.
– A psychological disorder is an ongoing dysfunctional pattern of thought, emotion, and behavior that causes significant distress and that is considered deviant in that person’s culture or society.
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Psychological Disorder
• Key Takeaways, continued– According to the bio-psycho-social model, psychological disorders have
biological, psychological, and social causes.– It is difficult to diagnose psychological disorders, although the DSM provides
guidelines that are based on a category system. The DSM is frequently revised, taking into consideration new knowledge as well as changes in cultural norms about disorder.
– There is controversy about the diagnosis of disorders such as ADHD, autistic disorder, and Asperger’s disorder.
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Anxiety and Dissociative DisordersFearing the World Around Us
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Anxiety and Dissociative Disorders
• Learning Objectives:1. Outline and describe the different types of anxiety disorders.2. Outline and describe the different types of dissociative disorders.3. Explain the biological and environmental causes of anxiety and dissociative
disorders.
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Dissociative Amnesia and Fugue
• Involves extensive, but selective, memory loss in which there is no physiological explanation for the forgetting
• Normally brought on by a trauma
• A disorder in which an individual loses complete memory of her identity and may even assume a new one, often far from home
• Recovery is often rapid, but the individual may have no memory of the event that triggered the fugue or of events that occurred during the fugue.
dissociative amnesia dissociative fugue
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Dissociative Identity Disorder
• dissociative identity disorder– disorder in which two or more distinct personalities exist in the same person, and
in which there is an extreme memory disruption regarding personal information about the other personalities
– host personality• the personality in control of the body most of the time
– alter personalities• tend to differ from each other in age, race, gender, language, manners, and
even sexual orientation
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Dissociative Identity Disorder
• Dissociative disorders are rare and most frequently seen in adolescents and young adults.
• Researchers question the legitimacy of the disorders, especially dissociative identity disorder.
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Explaining Anxiety and Dissociation Disorders
Anxiety disorders reflect
“nature.”
Anxiety disorders reflect
“nurture.”
conditioning processes
traumatic events
childhood abuse
brain differences
genetic markers
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Explaining Anxiety and Dissociation Disorders
• Dissociative disorders seem to be almost entirely environmentally determined.– Severe emotional trauma during childhood coupled with a strong stressor is
usually cited as the underlying cause.
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Anxiety and Dissociative Disorders
• Key Takeaways– Anxiety is a natural part of life, but too much anxiety can be debilitating. Every
year millions of people suffer from anxiety disorders.– People who suffer from generalized anxiety disorder experience anxiety, as well
as a variety of physical symptoms.– Panic disorder involves the experience of panic attacks, including shortness of
breath, heart palpitations, trembling, and dizziness.– Phobias are specific fears of a certain object, situation, or activity. Phobias are
characterized by their specificity and their irrationality.
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Anxiety and Dissociative Disorders
• Key Takeaways, continued– A common phobia is social phobia, extreme shyness around people or discomfort
in social situations.– Obsessive-compulsive disorder is diagnosed when a person’s repetitive thoughts
are so disturbing and their compulsive behaviors so time consuming that they cause distress and significant disruption in a person’s everyday life.
– People who have survived a terrible ordeal, such as combat, torture, rape, imprisonment, abuse, natural disasters, or the death of someone close to them, may develop PTSD.
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Anxiety and Dissociative Disorders
• Key Takeaways, continued– Dissociative disorders, including dissociative amnesia and dissociative fugue, are
conditions that involve disruptions or breakdowns of memory, awareness, and identity. The dissociation is used as a defense against the trauma.
– Dissociative identity disorder, in which two or more distinct and individual personalities exist in the same person, is relatively rare and difficult to diagnose.
– Both nature and nurture contribute to the development of anxiety disorders.
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Mood DisordersEmotions as Illness
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Positive Emotions
• Learning Objectives:1. Summarize and differentiate the various forms of mood disorders, in particular
dysthymia, major depressive disorder, and bipolar disorder.2. Explain the genetic and environmental factors that increase the likelihood that a
person will develop a mood disorder.
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Positive Emotions
• Key Takeaways– Mood is the positive or negative feelings that are in the background of our
everyday experiences.– We all may get depressed in our daily lives, but people who suffer from mood
disorders tend to experience more intense—and particularly more intense negative—moods.
– The most common symptom of mood disorders is negative mood.
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Mood Disorders
• mood– the positive or negative feelings that are in the background of our everyday
experiences• mood (or affective) disorders
– disorders in which mood negatively influences physical, perceptual, social, and cognitive processes
– affect 10% of the U.S. population in a given year– most common symptom is negative mood– can occur at any age; median age of onset is 32 years– affect twice as many women as men
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Behaviors Associated With Depression
changes in appetite; weight loss or gain
difficulty concentrating, remembering details, and making decisionsfatigue and decreased energyfeelings of hopelessness, helplessness, and pessimism
increased use of alcohol or drugsirritability, restlessnessloss of interest in activities or hobbies once pleasurable, including sexloss of interest in personal appearancepersistent aches or pains, headaches, cramps, or digestive problems that do not improve with treatment
sleep disorders, either trouble sleeping or excessive sleepingthoughts of suicide or attempts at suicide
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Dysthymia and Major Depressive Disorder
• Characterized by mild, but chronic, depressive symptoms that last for at least 2 years
• Characterized by an all-encompassing low mood, with low self-esteem and a loss of interest or pleasure in normally enjoyable activities
• Affects 7% of the American population in any given year
dysthymia major depressive disorder
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Bipolar Disorder
• bipolar disorder– Disorder characterized by swings
in mood from overly “high” to sad and hopeless, and back again, with periods of near-normal mood in between
• Often chronic and lifelong; may begin in childhood
• Diagnosis complicated by the high comorbidity of bipolar disorder with other anxiety and mood disorders
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Explaining Mood Disorders
• biological factors– genes– neurotransmitters, especially serotonin, dopamine, and norepinephrine levels– structural brain differences– reduced neurogenesis
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• Caspi et al. (2003) found that the number of stressful life experiences was associated with increased depression for people with the short allele of the 5-HTT gene but not for people who did not have the short allele.
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Explaining Mood Disorders
• Negative thoughts about oneself and others
• Negative behaviors toward others
• Cultural expectations about how one ought to feel
psychological factors social factors
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Mood Disorders
• Key Takeaways, continued– If a person experiences mild but long-lasting depression, she will be diagnosed
with dysthymia. If the depression continues and becomes even more severe, the diagnosis may become that of major depressive disorder.
– Bipolar disorder is characterized by swings in mood from overly “high” to sad and hopeless, and back again, with periods of near-normal mood in between.
– Mood disorders are caused by the interplay among biological, psychological, and social variables.
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SchizophreniaThe Edge of Reality and Consciousness
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Schizophrenia
• Learning Objectives:1. Categorize and describe the three major symptoms of schizophrenia.2. Identify the biological and social factors that increase the likelihood that a
person will develop schizophrenia.
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Schizophrenia
• schizophrenia– serious disorder marked by delusions, hallucinations, loss of contact with reality,
inappropriate affect, disorganized speech, social withdrawal, and deterioration of adaptive behavior
• the most chronic and debilitating psychological disorder• affects men and women equally• occurs at similar rates across ethnicities and cultures• affects 3 million Americans at any one time• onset is usually between the ages of 16 and 30
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Symptoms of Schizophrenia
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Symptoms of Schizophrenia
• hallucinations– imaginary sensations that occur in the absence of a real stimulus or which are
gross distortions of a real stimulus• delusions
– false beliefs not commonly shared by others within one’s culture, and maintained even though they are obviously out of touch with reality
• derailment– the shifting from one subject to another, without following any one line of
thought to conclusion• catatonia
– movement disorder in which a person does not move and is unresponsive to others
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Explaining Schizophrenia
• genetics• brain structure
– enlarged cerebral ventricles; overall loss of neurons
• neurotransmitters– excess dopamine; abnormal
serotonin levels
• poverty• malnutrition• disease• stress
biological factors environmental factors
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• The risk of developing schizophrenia increases substantially if a person has a relative with the disease.
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Schizophrenia
• Key Takeaways– Schizophrenia is a serious psychological disorder marked by delusions,
hallucinations, and loss of contact with reality.– Schizophrenia is accompanied by a variety of symptoms, but not all patients
have all of them.– Because the schizophrenic patient has lost contact with reality, we say that he or
she is experiencing psychosis.– Positive symptoms of schizophrenia include hallucinations, delusions, derailment,
disorganized behavior, inappropriate affect, and catatonia.
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Schizophrenia
• Key Takeaways– Negative symptoms of schizophrenia include social withdrawal, poor hygiene and
grooming, poor problem-solving abilities, and a distorted sense of time.– Cognitive symptoms of schizophrenia include difficulty comprehending and using
information and problems maintaining focus.– There is no single cause of schizophrenia. Rather, there are a variety of biological
and environmental risk factors that interact in a complex way to increase the likelihood that someone might develop schizophrenia.
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Personality Disorders
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Personality Disorders
• Learning Objectives:1. Categorize the different types of personality disorders and differentiate
antisocial personality disorder from borderline personality disorder.2. Outline the biological and environmental factors that may contribute to a
person developing a personality disorder.
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Personality Disorders
• personality disorder– disorder characterized by inflexible patterns of thinking, feeling, or relating to
others that cause problems in personal, social, and work situations• fall on DSM’s Axis II• tend to emerge during late childhood or adolescence; usually continue throughout
adulthood• categorized into three clusters
– Cluster A: odd or eccentric behavior– Cluster B: dramatic or erratic behavior– Cluster C: anxious or inhibited behavior
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Personality Disorders
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Personality Disorders
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Personality Disorders
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Personality Disorders
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Borderline Personality Disorder
• borderline personality disorder (BPD)– a psychological disorder characterized by a prolonged disturbance of personality
accompanied by mood swings, unstable personal relationships, identity problems, threats of self-destructive behavior, fears of abandonment, and impulsivity
• widely diagnosed—up to 20% of psychiatric patients are given the diagnosis• may occur in up to 2% of the general population• ¾ of diagnosed cases are women• often associated with suicide
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Borderline Personality Disorder (BPD)
• genetic predisposition• neurotransmitter imbalances
• disturbed early relationship with parents
• parental abuse in adolescence• divorce, parental alcoholism; other
stressors
biological factors environmental factors
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Antisocial Personality Disorder (APD)
• antisocial personality disorder– a pervasive pattern of violation of the rights of others that begins in childhood or
early adolescence and continues into adulthood• person must be 18 years of age or older and have a documented history of conduct
disorder before age 15• the foundation of criminal behavior• intensity of antisocial symptoms tends to peak during the 20s and then may
decrease
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Antisocial Personality Disorder (APD)
• genetic predisposition• low autonomic activity during stress• biochemical imbalances• right hemisphere abnormalities• reduced gray matter in the frontal
lobes
• neglectful or abusive parenting styles –harsh, inconsistent discipline; inappropriate modeling
biological factors environmental factors
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Personality Disorders
• Key Takeaways– A personality disorder is a disorder characterized by inflexible patterns of
thinking, feeling, or relating to others that causes problems in personal, social, and work situations.
– Personality disorders are categorized into three clusters: those characterized by odd or eccentric behavior, dramatic or erratic behavior, and anxious or inhibited behavior.
– Although they are considered as separate disorders, the personality disorders are essentially milder versions of more severe Axis I disorders.
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Personality Disorders
• Key Takeaways, continued– Borderline personality disorder is a prolonged disturbance of personality
accompanied by mood swings, unstable personal relationships, and identity problems, and it is often associated with suicide.
– Antisocial personality disorder is characterized by a disregard of others’ rights and a tendency to violate those rights without being concerned about doing so.
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Somatoform, Factitious, and Sexual Disorders
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Somatoform, Factitious, and Sexual Disorders
• Learning Objectives:1. Differentiate the symptoms of somatoform and factitious disorders.2. Summarize the sexual disorders and paraphilias.
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Somatoform and Factitious Disorders
• Somatoform and factitious disorders occur when psychological disorders are related to the experience or expression of physical symptoms.
• In somatoform disorders the physical symptoms are real. In factitious disorders they are not.
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Somatoform Disorders
•disorder in which a person experiences numerous long-lasting, seemingly unrelated physical ailments with no identifiable physical cause
somatization disorder
•disorder in which patients experience specific neurological symptoms such as numbness, blindness, or paralysis
conversion disorder
•disorder accompanied by an imagined defect in body parts or body odor
body dysmorphic disorder
•disorder focused on preoccupation and worry about having a serious illness
hypochondriasis
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Factitious Disorders
• Patient has a lifelong pattern of successive hospitalizations for faked symptoms
• Involves fabricating the symptoms of mental or physical disorder to gain financial reward; to avoid school, work, or military service; to obtain drugs; or to avoid prosecution
Munchausen syndrome malingering
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Disorders of Sexual Function
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Disorders of Sexual Function
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Gender Identity Disorder
• gender identity disorder (GID, or transsexualism)– diagnosed when the individual displays a repeated and strong desire to be the
other sex; a persistent discomfort with one’s sex; and a belief that one was born the wrong sex; accompanied by significant dysfunction and distress.
• rare – occurs in1 in every 12,000 males and 1 in every 30,000 females• causes are unknown, but may be related to the amount of testosterone and other
hormones in the uterus
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Paraphilias
• paraphilia– a sexual deviation where arousal
is obtained from a consistent pattern of inappropriate responses to objects or people, and in which the behaviors associated with the feelings are distressing and dysfunctional