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NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percent Agreement, and Cohen's Kappa or Intraclass Correlation for the Constructed-Response Items From Previous Years, Rescored in 2005, by Block and Item, Grade 12 Science National Main Assessment: 2005
Range of response codes, percentage exact agreement, and Cohen's Kappa or intraclass correlation for the constructed-response items from 2000, rescored in 2005, by block and item, grade 12 science national main assessment: 2005
Block Item Range of response codes Sample size Percent exact agreement Cohen's Kappa Intraclass correlation
S3 K049501 1–4 1,100 98 0.83
K049502 1–5 1,300 87 0.92
K049503 1–3 1,300 88 0.91
K049504 1–3 1,300 86 0.90
K049505 1–3 1,300 90 0.90
K049506 1–3 1,300 85 0.72
S5 K040801 1–3 1,700 98 0.94
K040802 1–3 1,800 98 0.89
K040808 1–3 1,800 98 0.97
K040809 1–3 1,600 94 0.95
K040803 1–3 1,900 98 0.97
K040804 1–3 2,400 86 0.84
K040805 1–3 2,000 92 0.89
K040806 1–2 2,200 85 0.64
S6 K049701 1–3 1,200 97 0.96
K049702 1–3 1,200 98 0.97
K049708 1–2 1,200 96 0.92
K049703 1–3 1,300 93 0.90
K049704 1–3 1,400 94 0.91
K049705 1–4 1,000 85 0.88
K049706 1–3 1,600 80 0.85
K049707 1–5 2,200 80 0.92
† The intraclass correlation is not reported for dichotomously scored items; Cohen's Kappa is not reported for polytomously scored items.
NOTE: Cohen's Kappa is a measure of reliability that is appropriate for items that are dichotomously scored. The intraclass correlation coefficient is most appropriate for items with more than two categories.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Science Assessment.

Last updated 26 March 2009 (GF)

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