NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Scales → Scale Composition by Item Type for New and Trend Blocks → Reading Assessment Subscale Composition for New and Previously Administered Blocks at Grade 8

NAEP Technical DocumentationReading Assessment Subscale Composition for New and Previously Administered Blocks at Grade 8

Each reading assessment includes blocks of new items and blocks of items from previous assessments. For the new items and for the previously administered items in each reading scale, the number of multiple-choice, dichotomously scored constructed-response and polytomously scored constructed-response items are provided at grade 8. The item counts are available for each scale as defined in the final Item Response Theory (IRT) scales.

Subscale composition for new blocks as defined after scaling, grade 8 reading combined national and state main assessment, by item type: 2009

Subscale	Multiple-choice items		Dichotomously scored constructed-response items		Polytomously scored constructed-response items
	Scaled	Dropped	Scaled	Dropped	Polytomous uncollapsed	Dichotomous collapsed	Polytomous collapsed	Dropped
NOTE: "Dropped" denotes items that were deleted from the final scaling. "Collapsed" denotes items that had categories that were combined and recoded for scaling. Some items were administered previously under different contexts. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Reading Assessment.
Total	77	0	10	0	40	2	1	0
Reading for literary experience	34	0	3	0	22	0	0	0
Reading to gain information	43	0	7	0	18	2	1	0

Subscale composition for previously administered blocks as defined after scaling, grade 8 reading combined national and state main assessment, by item type: 2009

Scale	Multiple-choice items			Dichotomously scored constructed-response items			Polytomously scored constructed-response items
	Concurrent	Split	Dropped	Concurrent	Split	Dropped	Polytomous uncollapsed	Dichotomous collapsed	Polytomous collapsed	Split	Dropped
NOTE: "Concurrent" denotes items that were scaled as common items across assessment years. "Split" denotes items that were scaled as different items in each assessment year. "Dropped" denotes items that were deleted from the final scaling. "Collapsed" denotes items that had categories that were combined and recoded for scaling. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Reading Assessment.
Total	61	0	0	28	0	0	29	6	3	0	0
Reading for literary experience	26	0	0	6	0	0	14	3	1	0	0
Reading to gain information	35	0	0	22	0	0	15	3	2	0	0

Block composition, grade 8 reading combined national and state assessment, by item type and block: 2009

Block	Total number of items	Number of multiple-choice items	Number of polytomously-scored constructed-response items
			2-category	3-category	4-category
NOTE: For a small number of constructed-response items, adjacent categories were combined. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Reading Assessment.
Total	257	138	44	53	22
F3	10	3	4	2	1
F4	9	5	0	3	1
F5	11	7	3	1	0
F6	12	5	5	0	2
F7	10	5	0	4	1
F8	11	6	3	1	1
F9	10	6	1	3	0
F10	12	4	7	1	0
F11	12	3	8	1	0
F12	10	5	1	3	1
F14	10	6	2	1	1
F15	10	6	0	3	1
R1	10	5	1	3	1
R2	10	6	1	2	1
R3	10	7	2	0	1
R4	10	6	1	2	1
R5	10	7	1	1	1
R6	10	7	0	2	1
R7	10	7	0	2	1
R8	10	6	1	2	1
R9	10	5	0	4	1
R10	9	4	0	4	1
R11	11	6	1	3	1
R12	11	7	1	2	1
R13	9	4	1	3	1

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