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Behavioural problems are an important feature of dementia and other neuropsychiatric conditions. This paper describes the development and performance of an investigator-based interview (the PBE) for the detailed assessment of the behaviour of subjects over the preceding four weeks. The interview is designed to be administered to carers. A test-retest reliability study was carried out on the penultimate edition of this interview; and the inter-rater reliability of the final edition was measured. These studies show that the reliability of the PBE is comparable with that of other investigator-based interviews.


Journal article


Psychol Med

Publication Date





223 - 230


Aged, Aged, 80 and over, Dementia, Female, Humans, Male, Observer Variation, Personality Assessment, Psychometrics, Reproducibility of Results, Social Behavior Disorders, Social Environment