ch 14: dissociative, DID, schizo, Flashcards
What are dissociative disorders characterized by?
Disruptions of identify/memory/conscious awareness
Splitting off of some parts of memory from conscious awareness
Related to extreme stress
List and describe the different dissociative disorders.
Dissociative amnesia:
- Forgetting of events that happening or loss of awareness of substantial blocks of time
- May lose memory for personal facts, including identify and place of residence
Dissociative fugue
- Loss of memory accompanied by travel to another location
- Sometimes assume new identity
What are the criteria for dissociative identity disorder (DID)?
- Formerly known as multiple personality disorder
- 2 or more distinct identities in same person memory gaps
- Adoption of several new identities (as many as 100, may just be a few, avg is 15)
- Identities display unique behaviors, voice and postures
High female to male ratio → 9:1
Onset is almost always in childhood/adolescence
More common than previously thought 3-6%
describe the 3 terms for DID
ALTERS: different identities/personalities
HOST: the identity that keeps other identities together (core personality)
SWITCH: quick transition from one personality to another (from alter to alter)
DID female to male ratio? when is onset? prevalence?
High female to male ratio → 9:1
Onset is almost always in childhood/adolescence
More common than previously thought 3-6%
What are some causes of DID?
Typically linked to a history of severe, chronic trauma, often abuse in childhood
Closely related to PTSD, possibly an extreme subtype
Mechanism to escape from the impact of trauma
What is the controversy surrounding DID?
Widespread reports of child abuse preceding DID came only after Sybil (movie abt DID) released in 1970
Relatively few clinicians diagnosed a large number of cases → 66% of diagnosed made by .09% of clinicians
The treatment for DID requires therapists to make concrete the distinct personalities
What are the differences between hallucinations and delusions?
Both are psychosis → Gross departure from reality, which may include:
Hallucinations: Sensory experiences in the absence of sensory input (e.g. hearing voices)
Delusions: Strong, inaccurate beliefs that persist in the face of evidence to the contrary
What characterizes schizophrenia?
Alterations in thought, in perceptions, or in consciousness
Among most devastating disorder for affected person and family
Associated with impaired social, personal, or vocational functioning
What are the “positive symptoms” of schizophrenia?
Active manifestations of abnormal behavior / distortions or exaggerations of normal behavior
Delusions
Hallucinations
Disorganized speech
What are the different types of delusions?
Persecutory: Others are persecuting, spying on, or trying to harm one
Referential: objects, events, or other people have particular significance to one
Grandiose: one has great knowledge, power, or talent
Identity: one is someone else, such as the president
Guilt: one has committed a terrible sin
Control: one’s thoughts and behaviors are being controlled by external forces
What is the most common hallucination?
Experience of sensory events without environmental input
Can involve all senses (e.g., tasting something when not eating, having skin sensations when not being touched)
AUDITORY is most common→ hearing voices but dont exist, is within their own mind
What is disorganized behavior?
A variety of unusual behaviors
- Wearing layers of clothes on hot day
- Muttering, pacing and wringing hands
Catatonia
- Decreased response to environment, may be immobile
What is disorganized speech?
Can involve all senses (e.g., tasting something when not eating, having skin sensations when not being touched)
- Loose associations: conversation in unrelated directions (changing topics)
- Word salad: totally incomprehensible speech
- Clang associations: combo of words that rhyme but have no other link
What are the negative symptoms of schizophrenia?
Avolition (apathy) → lack of initiation and persistence
Alogia → relative absence of speech
Anhedonia → lack of pleasure/indifference (also primary symptom of depression)
Affective flattening → little expressed emotion
What are the twin concordance rates for schizophrenia?
If 1 twin has schizo → 50% chance identical twin will have it, 7-14% chance fraternal twin