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Titolo:
OPTIMAL ALLOCATION OF ASSESSMENT TIME IN RANDOMIZED PRETEST-POSTTEST DESIGNS
Autore:
MAXWELL SE;
Indirizzi:
UNIV NOTRE DAME,DEPT PSYCHOL NOTRE DAME IN 46556
Titolo Testata:
Psychological bulletin
fascicolo: 1, volume: 115, anno: 1994,
pagine: 142 - 152
SICI:
0033-2909(1994)115:1<142:OAOATI>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENERALIZABILITY THEORY; DIFFERENCE SCORES; RELIABILITY; POWER; TESTS; EXPERIENCE; VALIDITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
S.E. Maxwell, "OPTIMAL ALLOCATION OF ASSESSMENT TIME IN RANDOMIZED PRETEST-POSTTEST DESIGNS", Psychological bulletin, 115(1), 1994, pp. 142-152

Abstract

The widely used pretest-posttest design traditionally consists of a pretest and a posttest of equal lengths. However, greater statistical power can usually be achieved by using a posttest that is somewhat longer than the pretest. This article provides a method for calculating the optimal allocation of pretest and posttest assessment units so as tomaximize power and presents the accompanying reduction in required sample size for a range of parameter values. When insufficient information is available to estimate the optimal allocation precisely, the effects of allocating 75% of the assessment units to the posttest are evaluated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 04:03:22