Peer reviewedERIC Number: EJ407921
Record Type: Journal
Publication Date: 1989
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Some Comments on the Relation between Reliability and Statistical Power.
Humphreys, Lloyd G.; Drasgow, Fritz
Applied Psychological Measurement, v13 n4 p419-25 Dec 1989
Issues arising from difference scores with zero reliability that nevertheless allow a powerful test of change are discussed. Issues include the appropriateness of underlying statistical models for psychological data and the relationship between difference scores and power. Increases in reliability always increase power for a fixed effect size. (TJH)
Descriptors: Goodness of Fit, Mathematical Models, Power (Statistics), Psychometrics, Test Reliability
Publication Type: Journal Articles; Opinion Papers; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
