Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Reliability formulas that do not assume experimental independence

Reliability formulas that do not assume experimental independence Abstract Tautologies are established for the reliability coefficientρ 2 t of the sum ofn part scores. It is not assumed that the part scores are experimentally independent of each other nor that the parts are equivalent to each other. The tautologies show the exact role played by experimental dependence and nonequivalence of parts, respectively, in the reliability of the sum. The formal algebra is appropriate to reliability in the sense of repeated trials of the same test, as well as in the sense of a universe of parallel tests, although the empirical meanings are different. Emphasis is on practical formulas that require information from only a single experiment (or test). These can take the form only of lower bounds toρ 2 t , four of which are developed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychometrika Springer Journals

Reliability formulas that do not assume experimental independence

Guttman, Louis
Psychometrika , Volume 18 (3): 15 – Sep 1, 1953
Download PDF
15 pages

Loading next page...
 
/lp/springer-journals/reliability-formulas-that-do-not-assume-experimental-independence-PJxy0EaKLz

References (6)

Publisher
Springer Journals
Copyright
1953 Psychometric Society
ISSN
0033-3123
eISSN
1860-0980
DOI
10.1007/BF02289060
Publisher site
See Article on Publisher Site

Abstract

Abstract Tautologies are established for the reliability coefficientρ 2 t of the sum ofn part scores. It is not assumed that the part scores are experimentally independent of each other nor that the parts are equivalent to each other. The tautologies show the exact role played by experimental dependence and nonequivalence of parts, respectively, in the reliability of the sum. The formal algebra is appropriate to reliability in the sense of repeated trials of the same test, as well as in the sense of a universe of parallel tests, although the empirical meanings are different. Emphasis is on practical formulas that require information from only a single experiment (or test). These can take the form only of lower bounds toρ 2 t , four of which are developed.

Journal

Psychometrika – Springer Journals

Published: Sep 1, 1953

Keywords: Psychometrics; Assessment, Testing and Evaluation; Statistics for Social Sciences, Humanities, Law; Statistical Theory and Methods

There are no references for this article.