CRT Dependability. Consistency for criterion-referenced decisions. Challenges for CRT dependability. Raw scores may not show much variation (skewed distributions) CRT decisions are based on acceptable performance rather than relative position
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Consistency for criterion-referenced decisions
Berk, R. A. (1984). Selecting the index of reliability. In R. A. Berk (Ed.), A guide to criterion-referenced test construction (pp. 231-266). Baltimore, MD: The Johns Hopkins University Press.
Shepard, L. A. (1984). Setting performance standards. In R. A. Berk (Ed.), A guide to criterion-referenced test construction (pp. 169-198). Baltimore, MD: The Johns Hopkins University Press.
(Brown, 1996, p. 257)
(Brown, 1996, p. 260)
Assume a cut point of 60%. What is the raw score?
z = -0.36
Look at Table 9.1. What is the approximate value of the agreement coefficient?
Look at Table 9.2. What is the approximate value of the kappa coefficient?
Brennan, Robert (1995). Handout from generalizability theory workshop.
# of items
Mean of proportion scores
Standard deviation of proportion scores