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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 2007, Grade 8 Writing Combined National and State Main Assessment, by Item and Block: 2007

Range of response codes, percent agreement, and Cohen's Kappa or intraclass correlation for the constructed–response items from previous assessment years, rescored in 2007, grade 8 writing combined national and state main assessment, by item and block: 2007
Block Item Range of response codes Sample size Percent agreement Cohen’s Kappa Intraclass correlation
— Not available. 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), 2007 Writing Assessment.
W3 W006002 1–6 1,300 53.45 0.78
W5 W006202 1–6 1,400 53.58 0.82
W6 W006302 1–6 1,400 52.12 0.80
W7 W006402 1–6 1,300 56.54 0.85
W8 W006502 1–6 1,400 57.14 0.82
W9 W010902 1–6 1,400 55.95 0.77
W11 W006802 1–6 1,400 51.15 0.79
W12 W006902 1–6 1,400 55.94 0.77
W13 W007002 1–6 1,400 52.94 0.78
W14 W007102 1–6 1,400 56.08 0.78
W15 W011002 1–6 1,400 59.61 0.81
W17 W007402 1–6 1,400 56.24 0.82
W19 W011102 1–6 1,400 52.08 0.76
W21 W007802 1–6 1,400 54.55 0.80
W22 W007902 1–6 1,300 52.02 0.76
W23 W008002 1–6 1,300 57.97 0.78
W24 W008102 1–6 1,400 50.22 0.78

Last updated 02 March 2010 (JL)

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