Linear dependence of gain scores on their components imposes constraints on their use and interpretation: Comment on "are simple gain scores obsolete?"

Applied Psychological Measurement

Volumn 20, Issue 3, 1996, Pages 293-294

  Humphreys, Lloyd G ^a  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

Author keywords

Change scores; Classical test theory; Difference scores; Gain scores; Intraindividual differences; Measurement of growth; Reliability; Test theory; Validity

Indexed keywords

EID: 0000790878     PISSN: 01466216     EISSN: None     Source Type: Journal    
DOI: 10.1177/014662169602000309     Document Type: Article

References (2)

1. Humphreys, L. G., & Drasgow, F. (1989). Some comments on the relations between reliability and statistical power. Applied Psychological Measurement, 13, 419-425.
2. Williams, R. H., & Zimmerman, D. W. (1996). Are simple gain scores obsolete? Applied Psychological Measurement, 20, 59-69.