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I. Introducing a New Instrument for Rating Observed Behaviour∗ and the Rationale of the Psychological Impairment Concept
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1989
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PsychopathologyPsychiatric EvaluationPsychiatric DisordersBehavioral MeasurementDisabilityPsychometricsMental HealthSocial ImpairmentPsychologySocial SciencesNew InstrumentPsychological Impairment ConceptClinical PsychologyPsychological EvaluationFunctional PsychosisBehavioral SciencesPsychiatric DiseasePsychiatryBehavior-analytic AssessmentRehabilitationClinical PsychiatryPsychotic DisorderObserved Behaviour∗Cognitive DysfunctionInternational Pilot StudySchizophreniaCultural PsychiatryMedicinePsychological Measurement
Based on the experience with the International Pilot Study on Schizophrenia (IPSS) (WHO 1973, 1979), the WHO Division of Mental Health and Centres in Sofia, Groningen and Mannheim, joined by expertise from Nottingham and Zurich, conceived a prospective study to assess the ‘natural history’ (Ciompi, 1980 a, b ; Watt et al , 1983; Biehl, 1987) of psychological impairments and social disabilities in patients with functional psychosis in different socio-cultural environments (Jablensky et al 1980).