Test structure
- Yields three index scores representing each dyscalculia subtype (Verbal Index, Procedural Index, and Semantic Index) as well as a Total Index score that represents total test performance.
- The Verbal Index score is a measure of automatic fact retrieval and the linguistic components of math.
- The Procedural Index score is a measure of a student's ability to count, order, and sequence numbers or mathematical procedures.
- The Semantic Index score is a measure of visual—spatial and conceptual components, including magnitude representation, patterns and relationships, higher-level mathematical problem solving, and number sense.
- Choose to administer the full battery, only the subtests associated with an individual index, or only individual subtests.
- Reliable change and discrepancy scores can be calculated.
- Examinees in prekindergarten take nine subtests, examinees in kindergarten to Grade 2 take 14 subtests, and examinees in Grade 3 to college take 18 subtests.
Technical information
- Offers grade-based normative data (with age proxies provided); age and grade equivalents and percentiles for subtest scores; and confidence intervals, percentile ranks, z scores, and normal curve equivalents (NCEs) for index scores.
- Subtest and index scores are scaled to the familiar IQ metric (M = 100; SD = 15).
- Standardized on a sample of 1,061 examinees in prekindergarten to college drawn from more than 30 states and based on 2013 U.S. Census statistics.