Abstract
Williams & Zimmerman (1996) provided much-needed clarification on the reliability of gain scores. This commentary translates these ideas into recognizable patterns of change that tend to produce reliable or unreliable gain scores. It also questions the relevance of the traditional idea of reliability to the measurement of change.
Original language | English (US) |
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Pages (from-to) | 289-292 |
Number of pages | 4 |
Journal | Applied Psychological Measurement |
Volume | 20 |
Issue number | 3 |
DOIs | |
State | Published - Sep 1996 |
Keywords
- Change scores
- Classical test theory
- Difference scores
- Gain scores
- Intraindividual differences
- Measurement of growth
- Reliability
- Test theory
- Validity
ASJC Scopus subject areas
- Social Sciences (miscellaneous)
- Psychology (miscellaneous)