PSYCHOLOGICAL DISORDERS
3 Symptoms
Hallucinations
hearing / seeing things
Delusions
irrational beliefs
Affective disturbances
disorders of emotion or mood
The Psychological Model
Behavioral perspective
abnormal behavior can be acquired through behavioral learning - operant and classical conditioning
Cognitive perspective
abnormal behaviors are influenced by mental processes
Social-cognitive-behavioral
behaviour, cognition and social factors all influence each other (reciprocal determinism)
Indicators of Abnormality
Distress
showing prolonged levels of unease or anxiety
Maladaptiveness
acting in ways that make others fearful or interfere with one's well-being
Irrationality
talking or acting in ways that are irrational or incomprehensible to others
Unpredictability
behaving erratically and inconsistently
Unconventionality and undesirable behavior
behaving in ways that are statistically rare and violate social norms
Diagnostic and Statistical Manual of Mental Disorders 4th Ed. (DSM-IV)
contains 300 disorders
Mood Disorders
Major depression
after the depressing event has passed but the feeling remain for weeks, months or longer
Seasonal Affective Disorder (SAD)
- most likely to experience symptoms of depression during months of shortened periods of sunlight
Bipolar disorder
alternating periods of depression and extreme mania
Anxiety Disorder
Generalized Anxiety Disorder
- persistent and pervasive feelings of anxiety that comes out of nowhere and lasts for long periods
- no external cause
Panic attacks / Panic Disorder
increased heart rate, feeling dizzy, hands become sweaty, feeling like you might die
Agoraphobia
fear of public crowded spaces, open spaces
Phobic Disorder
irrational fear of a specific object, activity or situation
claustrophobia - fear of enclosed spaces
acrophobia - fear of heights
more in TB pg 582 - 583, Table 3
CAUSE
- Preparedness hypothesis: we have the innate tendencies to respond quickly and automatically to stimuli that posed a survival threat to our ancestors
Obsessive-Compulsive Disorder
obsessive thoughts and compulsive behaviors
tendency to run in families suggest a genetic link
learned that their anxiety-provoking thoughts are connected to harmful consequences
TREATMENT
- changing the individual's behaviour through extinction and will inevitable change the brain
Diagnostic Label
- involves depersonalization (a result of labelling) - treating people as a diagnostic category, robs them of their individuality and identity
- lowers self-esteem and reinforces disordered behaviour
Personality Disorder
Narcissistic Personality Disorder
- exaggerated sense of self-importance, a need for constant attention or admiration and often a preoccupation with fantasies of success or power
- no empathy for others
Antisocial Personality Disorder
lack sense of responsibilities to others and violations of social norms begin early in lives: disrupts class, getting into fights and running away from home
Borderline Personality Disorder
unstable and impulsive behaviours
Developmental Disorder
Autism
impoverished ability to "read" other people, use language and interact socially
Dyslexia
difficulty in reading. not a problem of visual sensation or perception but rather abnormality in the brain's language-processing circuits
Attention Deficit Hyperactivity Disorder (ADHD)
disability involving short attention span, distractibility and extreme difficulty in remaining inactive for any period
Schizophrenia
TYPES
Disorganized
incoherent speech, hallucinations, delusions and bizarre behaviour
Catatonic
involves remaining motionless or extreme excitement
Paranoid
combination of delusions and hallucinations
Undifferentiated
displaying a combination of symptoms that do not clearly fit in one of the other categories
Residual
had a past episode of schizophrenia but are free of symptoms
SYMPTOMS
Positive
- person displays active symptoms (e.g. delusions, hallucinations)
Negative
- passive processes and deficiencies (e.g. social withdrawal, lack of emotional expression, lack of pleasure in life and poverty of thinking)
CAUSES
Genetics
Abnormal brain structure
- enlarged ventricles in brain of schizophrenic twin
Biological factors
- antipsychotic drugs which interfere with the brain's dopamine receptors, suppress symptoms of positive schizophrenic symptoms
- drugs that stimulate dopamine reactions can actually produce schizophrenic reactions
Diathesis-stress hypothesis
- genetic factor place the individual at risk but environmental stress factors transform this potential into an actual schizophrenic disorder
Dissociative Disorder
Dissociative Amnesia
individual blocks out certain information, usually associated with a stressful incident, leaving one unable to remember personal information
Dissociative Fugue
dissociative amnesia with the addition of "flight"from one's home, family and job
Depersonalization Disorder
involves a sensation that mind and body has separated
individual who experienced severe physical trauma, had a near-death experience or using recreational drugs may report symptoms of depersonalization
Dissociative Identity Disorder
individual displaying more than two identities
may be a defense by the dominant personality to protect oneself from terrifying events or memories
has a consciousness of its own and emerges suddenly usually under stress
Somatoform Disorder
Conversion Disorder
paralysis, weakness, loss of sensation but with no physical cause
problem seems to be "all in the mind"
Hypochondriasis
individual worry about getting sick. every ache and pain signals a disease
