Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
FURTHER COMMENTS ON RELIABILITY AND POWER OF SIGNIFICANCE TESTS
Autore:
HUMPHREYS LG;
Indirizzi:
603 E DANIEL ST CHAMPAIGN IL 61820 UNIV ILLINOIS URBANA IL 61801
Titolo Testata:
Applied psychological measurement
fascicolo: 1, volume: 17, anno: 1993,
pagine: 11 - 14
SICI:
0146-6216(1993)17:1<11:FCORAP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Keywords:
DIFFERENCE SCORES; ERROR OF MEASUREMENT; PLANNING EXPERIMENTS; POWER; RELIABILITY; SIGNIFICANCE TESTS; T-TESTS; TRUE SCORES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Social Sciences Citation Index
Citazioni:
5
Recensione:
Indirizzi per estratti:
Citazione:
L.G. Humphreys, "FURTHER COMMENTS ON RELIABILITY AND POWER OF SIGNIFICANCE TESTS", Applied psychological measurement, 17(1), 1993, pp. 11-14

Abstract

The controversy about the relationship between reliability and the power of significance tests exists because statisticians obtain numerical solutions by varying independently the parameters of the power of statistical tests. In contrast, researchers have empirical limitations placed on them in varying the same parameters. Reliability and power can legitimately be decoupled by selection of the population from which to sample (Zimmerman & Williams, 1986), but this is an undependable way to increase power (Humphreys, 1991). Reducing population variance byselection of the sample can be considered a special case of (and a crude approximation to) the analysis of covariance, which is also a moreeffective way of controlling individual differences in true scores than the use of difference scores. Both the regressed differences and the raw differences are less reliable within treatments than their components, but can have more power in statistical tests. As the reliability of derived scores increases, however, power increases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 21:27:08