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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 2006, Grade 12 Civics Assessment, by Item and Block: 2006

NAEP Technical DocumentationRange of response codes, percent agreement, and Cohen's Kappa or intraclass correlation for the constructed-response items from previous years rescored in 2006, grade 12 civics assessment, by item and block: 2006

Block	Item	Range of response codes	Sample size	Percent of exact agreement	Cohen’s Kappa	Intraclass correlation
† 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), 2006 Civics Assessment.
P3	P041503	1–3	700	69	†	0.69
	P041505	1–3	700	69	†	0.66
	P041509	1–4	700	73	†	0.77
	P041511	1–3	700	72	†	0.75
P4	P041606	1–3	800	71	†	0.72
	P041613	1–3	800	92	†	0.90
	P041614	1–3	700	85	†	0.80
P5	P041705	1–3	700	64	†	0.56
	P041706	1–4	800	77	†	0.81
	P041711	1–3	700	84	†	0.81
	P041713	1–3	700	84	†	0.84
P6	P041804	1–3	700	67	†	0.64
	P041806	1–3	700	76	†	0.76
	P041815	1–3	700	82	†	0.81
P7	P041902	1–3	800	82	†	0.81
	P041905	1–4	800	73	†	0.72
	P041907	1–4	800	80	†	0.85
	P041912	1–3	800	64	†	0.52
P10	P041404	1–4	800	65	†	0.61
	P041408	1–3	700	68	†	0.69
	P041412	1–3	700	78	†	0.66
	P041413	1–3	700	73	†	0.63

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