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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 8 Geography Assessment: 2001
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 8 geography assessment: 2001
Block Item Range of response codes Sample size Percent exact agreement Cohen's Kappa Intraclass correlation
G3 G013402 1–3 600 90 0.90
G014001 1–3 600 99 0.99
G014201 1–4 600 90 0.94
G014301 1–3 600 89 0.93
G014401 1–3 600 95 0.94
G4 G032901 1–3 600 90 0.91
G033301 1–3 600 94 0.95
G033501 1–4 600 87 0.93
G033801 1–3 600 94 0.96
G034101 1–3 600 90 0.93
G5 G016201 1–3 600 100 1.00
G016302 1–3 600 100 0.99
G016401 1–3 600 96 0.98
G016502 1–3 600 97 0.95
G016701 1–3 600 94 0.96
G017101 1–4 600 88 0.94
G6 G034801 1–4 600 97 0.99
G035001 1–4 600 82 0.90
G035301 1–4 600 91 0.97
G035501 1–4 600 90 0.94
G7 G036201 1–3 600 98 0.99
G036501 1–4 600 86 0.90
G036801 1–3 600 93 0.96
G037101 1–3 600 93 0.95
G8 G012201 1–3 600 99 0.99
G012503 1–3 600 100 1.00
G012902 1–3 600 99 0.99
G013001 1–4 600 94 0.98
G013201 1–3 600 90 0.94
G9 G019002 1–3 600 100 1.00
G019003 1–3 600 96 0.97
G019102 1–3 600 95 0.95
G019202 1–3 600 93 0.94
G019302 1–3 600 98 0.98
G019402 1–3 600 95 0.96
G019901 1–4 600 95 0.96
G020001 1–3 600 99 0.98
G020201 1–3 600 95 0.94
G020302 1–3 600 95 0.97
† 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), 2001 Geography Assessment.

Last updated 11 July 2008 (KL)

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