Wechsler Individual Achievement Test | Third Edition

WIAT-III

David Wechsler, PhD

For clinical, educational, or research teams who need to measure comprehensive listening, speaking, reading, writing, and math skills, the WIAT-III is an individually-administered achievement test for children, adolescents, and adults. See our Guidance on using this assessment remotely.

Publication date: 2009

Age range: Individuals 4:0-50:11

Scores/interpretation: Fall, Winter, and Spring grade-based standard scores, age-based standard scores, percentile ranks, stanines, NCEs, age and grade equivalents.

Qualification level: B Additional information

Completion time: Varies by grade level and number of subtests administered

Administration: Paper-and-pencil or online administration

Scoring options: Q-interactive administration and Q-global® web-based scoring

Telepractice: Guidance on using this test in your telepractice

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

Technical Reports

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.

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?

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?

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

Will Q-global score this currently?

How do you get the computation form?

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