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Titolo: LINEAR DEPENDENCE OF GAIN SCORES ON THEIR COMPONENTS IMPOSES CONSTRAINTS ON THEIR USE AND INTERPRETATION  ARE SIMPLE GAIN SCORES OBSOLETE  COMMENT
Autore: HUMPHREYS LG;
 Indirizzi:
 UNIV ILLINOIS,DEPT PSYCHOL,603 E DANIEL ST CHAMPAIGN IL 61820
 Titolo Testata:
 Applied psychological measurement
fascicolo: 3,
volume: 20,
anno: 1996,
pagine: 293  294
 SICI:
 01466216(1996)20:3<293:LDOGSO>2.0.ZU;2G
 Fonte:
 ISI
 Lingua:
 ENG
 Keywords:
 CHANGE SCORES; CLASSICAL TEST THEORY; DIFFERENCE SCORES; GAIN SCORES; INTRAINDIVIDUAL DIFFERENCES; MEASUREMENT OF GROWTH; RELIABILITY; TEST THEORY; VALIDITY;
 Tipo documento:
 Editorial Material
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 Physical, Chemical & Earth Sciences
 Citazioni:
 2
 Recensione:
 Indirizzi per estratti:



 Citazione:
 L.G. Humphreys, "LINEAR DEPENDENCE OF GAIN SCORES ON THEIR COMPONENTS IMPOSES CONSTRAINTS ON THEIR USE AND INTERPRETATION  ARE SIMPLE GAIN SCORES OBSOLETE  COMMENT", Applied psychological measurement, 20(3), 1996, pp. 293294
Abstract
The properties of gain scores are linearly determined by the properties of their components. Thus, the reliability of a gain is uniquely determined by the reliabilities of the components, the correlation between them, and their standard deviations. Reliability is not inherently low, but the components of gains used in many investigations make low reliability likely. Correlations of the difference between two measures and a third variate are also determined uniquely by three correlations and two standard deviations. Raw score standard deviations frequently tell more about the measurement metric and how it is used than about the psychological processes underlying the measurements. Correlations involving gains/differences cannot be understood adequately unless the essential sample statistics of the components are known and reported.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 22:31:50