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NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percentage Exact Agreement, and Cohen's Kappa or Intraclass Correlation for the Constructed-Response Items Used in Scaling, by Block and Item, Grade 4 Writing Combined National and State Main Assessment: 2002
Range of response codes, percentage exact agreement, and Cohen's Kappa or intraclass correlation for the constructed-response items used in scaling, by block and item, grade 4 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 W004002 1–6 3,200 71 0.92
W4 W004102 1–6 2,800 81 0.95
W5 W004202 1–6 4,000 69 0.92
W7 W004402 1–6 3,700 79 0.95
W8 W004502 1–6 2,800 79 0.95
W9 W004602 1–6 3,300 74 0.94
W10 W004702 1–6 3,700 75 0.94
W11 W004802 1–6 3,000 73 0.94
W12 W004902 1–6 2,400 82 0.96
W13 W005002 1–6 3,800 70 0.92
W14 W005102 1–6 3,400 74 0.92
W15 W005202 1–6 2,800 71 0.93
W16 W005302 1–6 3,600 72 0.91
W19 W005602 1–6 3,700 82 0.96
W20 W005702 1–6 5,200 73 0.94
W21 W005802 1–6 3,600 76 0.94
W22 W005902 1–6 3,500 71 0.91
† 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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