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NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percent Exact Agreement, and Cohen's Kappa or Intraclass Correlation for the Constructed-Response Items Used in Scaling, by Block and Item, Age 9 Reading Long-Term Trend Assessment: 2004
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, age 9 reading long-term trend assessment: 2004
Block Item Range of response codes Sample size Percent exact agreement Intraclass correlation
R21 N021203 1–5 500 78 0.87
R23 N021803 1–4 500 93 0.91
R24 N022103 1–4 500 86 0.83
R25 N022405 1–4 500 88 0.87
NOTE: 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), 2004 Reading Long-Term Trend Assessment.

Last updated 18 August 2009 (JL)

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