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Lifetime Dimensions of Psychosis Scale

Schizophrenia Bulletin, Vol. 28, No. 4, 2002

Table 1. Preliminary version of the Lifetime Dimensions of Psychosis Scale

  • P.

    Positive symptom psychosis (global rating) P-1. Any delusions P-2. Paranoia P-3. Any hallucinations P-4. Auditory voices P-5. Concurrent delusions and hallucinations P-6. Preoccupation with delusions or hallucinations

  • S.

    Schizophrenia syndrome psychosis (global rating) S-1. Bizarre (implausible, impossible) delusions S-2. Control delusions (thought insertion, thought withdrawal, control of thought/actions) S-3. Hallucinations characteristic of schizophrenia (voices conversing, voices commenting, continuous) S-4. Abnormal perception of thought (thought broadcasting, audible thoughts, thought echo)

NAP. Nonaffective psychosis (2+ wks, without prominent mood symptoms)

N. Negative symptoms (global rating) N-1. Reduced self-expression and emotion (restricted affective expression, diminished subjective emotions, poverty of speech) N-2. Reduced motivation (curbing of interests, diminished sense of purpose, diminished social drive) N-3. Deficit syndrome (2+ elements of N-1 + N-2 present for 12 mos, and persist in stable periods)

  • D.

    Disorganized symptoms (global rating) D-1. Formal thought disorder D-2. Inappropriate affect D-3. Impaired attention

  • I.

    Psychosocial impairment (global rating) 1-1. Social role impairment (work, social relationships) I-2. Social interactional impairment (odd appearance, odd prosody, odd behavior)

DE. Depression (overall severity and duration, syndromal or not) (global rating) DE-1. Depressive syndrome (9 individual Major Depressive Episode criteria listed with 3 columns for review of episodes) DE—1i. Suicidal thoughts or attempt DE-2. Maximum number of depressive features (concurrent for 2+ wks ever) DE-3. Subjective report of pervasively depressed mood (pervasive anhedonia, melancholia)

M. Mania (overall severity and duration, syndromal or not) (global rating) M-1. Manic syndrome (2 mood types and 7 criteria listed for review) M-2. Maximum number of manic features (other than mood; if only irritable, subtract 1) M-3. Classical manic features (euphoric/elevated mood, racing thoughts or pressure of speech, grandiosity, increased energy/activity) M-4. Bipolar course (distinct manic or mixed and depressive episodes)

MP. Mood psychosis (global rating) MP-1. Concurrent depressed mood and congruent psychosis (guilt, catastrophe/nihilism, suicide, nonbizarre somatic) MP-2. Concurrent grandiose/manic mood and congruent psychosis (importance/power, special relationship with God/ mission) MP-3. Concurrent psychotic and mood symptoms (psychosis not persisting 2 wks past mood disorder)

C1. Chronicity of psychosis (lifetime duration) C2. Deterioration (due to psychotic illness) C3. Remission (high score = more remission)

A. Atypical features (primary psychotic disorder is questioned because of) A-1. Atypical hallucinations (silent "voices," formed visions) A-2. Atypical abnormal beliefs (partial delusions, overvalued ideas) A-3. Psychosis without mood syndrome with substantial recovery (within 2 yrs) of affect/relatedness, social functioning, work A-4. Psychosis complicated by personality disorder (histrionic/dramatic, manipulation, secondary gain) A-5. Psychosis complicated by substance abuse (classes listed) A-6. Dissociative features (dissociative episodes, multiple personality, psychogenic seizures) A-7. Organic factors (major types listed)

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