Criteria for Abnormal Behavior
Deviant (socially unacceptable), maladaptive behavior (impairs everyday functioning) and personal distress (individual is suffering)
the medical model
treats psychological illness as a disease, allows for the use of terms of
diagnosis, etiology, prognosis (future causes) and prevalence
etiology for anxiety disorders
genetic predisposition towards anxiety problems. could be prone to developing based on genetics.
neurotransmitters involved in anxiety disorders
lowered levels of serotonin and GABA
Schizophrenia/psychotic disorders
affects 1-2% of the population worldwide, often confused with DID and bipolar. sets in late/early adulthood. means split mind. major characteristics are interruption in thought processing
positive symptoms of schizophrenia
behavioral excesses: hallucinations, delusions (beliefs), catatonic symptoms (irregularities of motor movement)
negative symptoms of schizophrenia
behavioral defecits/things missing: distrubed affect (emotions), disorganzied thought, speech, loss of touch with reality
subtypes of schizophrenia
paranoid type, catatonic type, disorganized type, undifferentiated type
paranoid type of schizophrenia
mostly positive symptoms
catatonic type of schizophrenia
catatonic symptoms
disorganized type of schizophrenia
mostly negative symptoms
undifferentiated type of schizophrenia
characteristics of all
etiology of schizophrenia
a highly genetic disorder; individuals have a genetic predisposition to develop it. excessive dopamine leads to extra thoughts movements and sensations, and often causes enlarged brain ventricles and a consistent loss of brain matter
dissociative disorders/identity disorders
people lose aspects of consciousness or memory, disrupting their identity
dissociative amnesia
loss of memory not due to normal forgetting, associated with trauma and abuse sometimes
fuge
loss of lifetime of memories as well as personal identity
dissociative identity disorder (multiple personality)
existence of two or more personalities in one person (DID)
etiology of identity dissociative disorders
amnesia, fugue, and DID seem to be stress-caused and more prevalent to fantasy prone personality
Somatiform disorders (aka psycho-somatic)
any physical ailment with no organic basis; a history of physical complaints. Real symptoms, but nothing is wrong. Illness source is psychological but the subject is experiencing real symptoms
Conversion disorder
loss of physical functioning in a major part/system of the body. Commonly is loss of vision, partial paralysis, mutism, or loss of functioning limbs
hypochondriasis
irrational belief of having a disease or sickness and preoccupation with illness
etiology of somatiform disorders
personality factors: individual tends to score high in neroticism, histrionic personality characteristics, often result from insecure attachment.
personality disorders
characterized by very rigid and inflexible personality traits that cause significant social and occupational problems
3 clusters of personality disorders
anxious/fearful, odd/eccentric, and dramatic/impulsive