Schizotypal Personality Questionnaire (SPQ)
Psychology: Mental HealthReliability: alpha 0.913 sample items
About this scale
A 74-item measure of schizotypal personality across nine subscales mapped to DSM schizotypal personality disorder criteria. SPQ-Brief (22 items) is the popular short form.
Sample item(s)
“Have you ever felt that you are not in control of your own thoughts? (cognitive-perceptual)”
“Are you sometimes sure that other people can tell what you are thinking? (cognitive-perceptual)”
“Do you often feel anxious in social situations? (interpersonal)”
Reliability
Reported internal consistency: alpha 0.91. As a rule of thumb, Cronbach’s α ≥ .70 is considered acceptable, ≥ .80 good, and ≥ .90 excellent for established measures.
Notes
Free for academic use.
Source & citation
Raine, A. (1991): The SPQ: A scale for the assessment of schizotypal personality based on DSM-III-R criteria. Schizophrenia Bulletin, Vol. 17, No. 4, pp. 555–564.
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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