Wechsler Individual Achievement Test | Third Edition: Dyslexia Index ScoresWIAT-III Dyslexia Index Scores
WIAT-III Dyslexia Index Scores are brief, individually-administered, performance-based screening tools that provide risk assessment, strength of risk, and interpretive information for team and parent/caregiver communication regarding individuals who may be at risk for dyslexia.
WIAT-III Dyslexia Index Scores Manual on Q-global0150023197 Qualification Level B
WIAT-III Dyslexia Index Scores Manual0158015258 Qualification Level B
- Age range:
5-50 (Grades K-12+)
- Publication date:
- Qualification level:
- Completion time:
15 mins or less
Q-interactive (administration only), Q-global (digital administration components), or paper-and-pencil
Standard score, percentile rank, confidence interval, descriptive classification, interpretive statement, history and background considerations, graphical profile
- Scoring options:
The WIAT–III Dyslexia Index scores help identify risk for dyslexia among students in grades kindergarten through 12, or individuals ages 5 through 50.
The WIAT-III Dyslexia Index Scores may be used:
The WIAT–III Dyslexia Index scores were designed to provide theoretically sound, reliable, and clinically sensitive composite scores for identifying risk for dyslexia among students in grades kindergarten through 12, or individuals ages 5 through 50. In 15 minutes or less, practitioners can obtain a Dyslexia Index score to screen for dyslexia and identify individuals who may benefit from a comprehensive evaluation or a more intensive intervention approach.
A single score such as the Dyslexia Index is not sufficient to diagnose dyslexia. Rather, a diagnosis of dyslexia is based on a convergence of evidence gathered from multiple sources. However, the Dyslexia Index results may contribute to a more in-depth evaluation using the WIAT–III.
Two Dyslexia Index scores are provided for the WIAT–III:
These Dyslexia Index scores are obtained by administering two or three subtests, respectively, from the WIAT–III (Pearson, 2009a). With the exception of the Response Booklet pages for the Spelling subtest, the materials needed to administer and score the Dyslexia Index subtests are available as part of the WIAT–III. The specific testing materials needed for administration are listed below:
The WIAT–III Dyslexia Index: Grades K–1 includes two subtests:
This composite is available for students in kindergarten and grade 1.
The WIAT–III Dyslexia Index: Grades 2–12+ includes three subtests:
This composite is available for students in grades 2–12 as well as adults up to age 50. The composite structure for both Dyslexia Index scores is shown below:
The following training events are available for WIAT-III Dyslexia Index Scores.