Wechsler Individual Achievement Test | Third Edition

The WIAT-III is an achievement test for use in a variety of clinical, educational and research settings, including schools, clinics, private practices and residential treatment facilities.

Benefits

• Screen for dyslexia with stimulus materials you may already own with new Dyslexia Index Scores
• Identify student academic abilities, make educational placement decisions, diagnose specific learning disability, design instructional objectives, and plan interventions.
• Measure all eight areas of achievement specified by IDEA legislation.
• Focus on reading goals and objectives with the Early Reading Skills subtests.
• Evaluate patterns of strengths and weaknesses to identify learning disabilities.

Features

• Subtests include: Enhanced Listening Comprehension, Oral Expression, Written Expression subtests, Enhanced Reading Comprehension, Oral Reading (new), Math Fluency (new), and Early Reading Skills (new).
• Dyslexia Index Scores can be used for screening, inclusion in a comprehensive assessment battery, and as a tool for research.
• Improved scoring rules in response to scoring studies, theoretical reviews by expert researchers, and usability reviews by teachers and clinicians.
• Enhanced scoring software and interactive scoring guide in every kit.
• Updated norms for PreK through grade 12, and for ages 4:0–50:11; nationally standardized on 3,000 students and adults and features comprehensive normative information.
• Correlated with the following ability measures: WPPSI-III (Wechsler, 2002); WPPSI-IV (Wechsler, 2012); WISC-IV (Wechsler, 2003); WISC-V (Wechsler, 2014); WAIS-IV (Wechsler, 2008); WNV (Wechsler & Naglieri, 2006); DAS-II (Elliott, 2007).

The following resources are available for WIAT-III.

Additional Materials

• Pearson Clinical Assessment Solutions: A Dyslexia Toolkit
• Assessing Writing Skills Using Correct-Incorrect Word Sequences
• Intervention Guide for LD Subtypes
• Quick Score Guide for WIAT-III Essay Composition
• Patterns of Strengths & Weaknesses Models for Identifying SLD (NASP 2010)
• WIAT-III Enhanced Content Modifications

Technical Reports

• WIAT-III Technical Report #1: Conducting Ability-Achievement Discrepancy Analyses Using WISC-IV GAI and WIAT-III
• WIAT-III Technical Report #2: Reliability Coefficients and Standard Errors of Measurement for Subtest Component Scores

Sample Reports

Combination reports allow you to upgrade your WPPSI-IV or WIAT-III score report to include a pattern of strengths and weaknesses analysis, and an ability achievement discrepancy analysis of the combined results.

• Score Report
• WPPSI-IV / WIAT-III Combination Report

Frequently asked questions follow. Click on a question to see the response.

Q & A from the KTEA-3 and WIAT-III Dyslexia Index scores webinars

Where do I access these Dyslexia Index scores?

In print, in Q-global, and soon-to-be in Q-interactive!

• KTEA-3 Dyslexia Index Scores Manual (Manual Scoring) 015801524X
• KTEA-3 Dyslexia Index Scores Manual on Q-global 0150023189
• WIAT-III Dyslexia Index Scores Manual (Manual Scoring) 0158015258
• WIAT-III Dyslexia Index Scores Manual on Q-global 0150023197

Is the information in these new manuals similar to the Essentials book?

The original tables were first published in the Wiley Essentials of KTEA-3 and WIAT-III Assessment book, yes. However, these new manuals are expanded in content (with a wider age range in the case of WIAT-III), have the necessary forms, directly include scoring and significant interpretive information related to risk and recommendation language.

Is the score form included when I order protocols?

The score form is included in the new manuals - you may reproduce!

If we use either the KTEA-3 or the WIAT-III comprehensive tests now, can we just use the relevant subtests needed for these scores, or do we need other content?

If you have the current KTEA-3 or WIAT-III complete kits, you have everything you need except the new Dyslexia Index score manual--choose print or Q-global version.

Can I use the raw data from the Q-interactive administration to score using one of these new manuals?

Yes, you can use an existing KTEA-3 or WIAT-III administration with the new Dyslexia Index score manual.

Will Q-global score this currently? 

We are working on approvals for integrating the Dyslexia Index scores into the Q-global scoring and reporting, but that functionality is not available at this time.

How do you get the computation form?

It's included in the new manual.

Will the WIAT-III Dyslexia Index score give us a different score than typical scoring on the WIAT-III? 

Yes. It will provide a new score and that was not available before in the WIAT-III test. This score can be used on its own as a screener, or it can be used as part of the comprehensive evaluation with a full administration of KTEA-3 or WIAT-III.