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NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percentage Exact Agreement, and Intraclass Correlation for the Constructed-Response Items Used in Scaling, by Block and Item, Grade 8 Writing Combined National and State Main Assessment: 2002
Range of response codes, percentage exact agreement, and intraclass correlation for the constructed-response items used in scaling, by block and item, grade 8 writing combined national and state main assessment: 2002
Block Item Range of response codes Sample size Percent exact agreement Cohen's Kappa Intraclass correlation
W3 W006002 1–6 2,800 66 0.91
W4 W006102 1–6 3,400 72 0.94
W5 W006202 1–6 3,200 73 0.94
W6 W006302 1–6 3,500 68 0.91
W7 W006402 1–6 3,000 75 0.95
W8 W006502 1–6 3,800 70 0.94
W11 W006802 1–6 2,800 69 0.94
W12 W006902 1–6 3,300 68 0.94
W13 W007002 1–6 2,000 71 0.95
W14 W007102 1–6 3,500 72 0.95
W16 W007302 1–6 3,500 69 0.94
W17 W007402 1–6 2,600 71 0.94
W20 W007702 1–6 1,600 75 0.96
W21 W007802 1–6 3,200 68 0.93
W22 W007902 1–6 2,600 75 0.95
W23 W008002 1–6 4,600 74 0.96
W24 W008102 1–6 3,700 71 0.94
† 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), 2002 Writing Assessment.

Last updated 26 March 2009 (GF)

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