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Focus on psychometrics psychometric examination of instruments using aggregated data
Author(s) -
Verran Joyce A.,
Mark Barbara A.,
Lamb Gerri
Publication year - 1992
Publication title -
research in nursing and health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 85
eISSN - 1098-240X
pISSN - 0160-6891
DOI - 10.1002/nur.4770150310
Subject(s) - psychometrics , reliability (semiconductor) , psychology , measure (data warehouse) , consistency (knowledge bases) , test validity , clinical psychology , computer science , data mining , artificial intelligence , power (physics) , physics , quantum mechanics
The techniques used to examine the psychometric properties of instruments that measure concepts where individual responses are aggregated to form an index describing a group level phenomenon are reviewed. This examination includes assessing the content validity of items to determine how well they measure group level concepts as well as analyzing reliability and validity at the aggregated rather than individual level. Additional techniques to test for within and between group variability are presented. The latter approaches are useful in determining the consistency and adequacy of individual responses at the group level.