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  5. Wechsler Individual Achievement Test | Fourth Edition: Dyslexia Index

Wechsler Individual Achievement Test | Fourth Edition: Dyslexia Index

(WIAT-4 Dyslexia Index)
  • Kristina C. Breaux, PhD
WIAT-4 Dyslexia Index is a brief, individually-administered, performance-based screening tool that provides risk assessment, strength of risk, and interpretive information for team and parent/caregiver communication regarding individuals who may be at risk for dyslexia.
Age range:
4-50 (Grades PK-12+)

Publication date:
2020

Qualification level:
B

Qualification Level

 

Level A

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Level B

This approval level enables you to buy our assessments requiring A or B qualification levels.

Level C

This approval level enables you to buy all our assessments.

Completion time:
10-20 minutes or less (Less than 10 min for 4-12+, Less than 20 min for PK-3)

Administration:
Q-interactive (administration only), Q-global (digital administration components), or paper-and-pencil

Scores/Interpretation:
Standard score, percentile rank, confidence interval, descriptive classification, interpretive statement, history and background considerations, graphical profile

Scoring options:
Hand scoring, Q-global

Report Options:
Coming soon, Late 2020!

Pricing & Ordering

  • WIAT-4 Dyslexia Index Q-global Scoring & Reporting Subscription (1 Yr)

    A103000230967

    Pricing and Qualification

    Price: $40.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Q-global Scoring & Reporting Subscription (3 Yr)

    A103000230968

    Pricing and Qualification

    Price: $110.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Q-global Scoring & Reporting Subscription (5 Yr)

    A103000230969

    Pricing and Qualification

    Price: $165.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Q-global Score Report (1)

    A103000230976

    Pricing and Qualification

    Price: $2.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Record Forms (25)

    A103000193785

    Pricing and Qualification

    Price: $50.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Manual (Print)

    A103000193787

    Pricing and Qualification

    Price: $40.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Q-global Manual (Digital)

    A103000193782

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    Price: $40.00

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  • WIAT-4 Dyslexia Index Combination Kit (Digital Plus Print)

    A103000230966

    Includes Stimulus Book (Digital), Audio Files (Digital) , Q-global Manual (Digital), Pkg of 25 Record Forms (Print)

    Pricing and Qualification

    Price: $189.00

    Qualification Level B

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  • WIAT-4 Dyslexia Index Q-global Stimulus Book (Digital)

    A103000230970

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    Price: $99.00

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Product Details

The WIAT-4 Dyslexia Index helps identify risk for dyslexia among students from pre-kindergarten through grade 12, or individuals ages 4 through 50.

Uses & Applications

The WIAT-4 Dyslexia Index may be used:

  • As an evidence-based dyslexia screener
  • To identify students who may benefit from a more comprehensive evaluation or assessment battery
  • For research

Scores

The WIAT-4 Dyslexia Index was designed to provide theoretically sound, reliable, and clinically sensitive composite scores for identifying risk for dyslexia across much of the age span. In 10 to 20 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-4.

Two Dyslexia Index scores are provided for the WIAT-4:

  • One for grades PK–3, and
  • Another for grades 4–12 and adults up to age 50 (indicated by 4–12+)

These Dyslexia Index scores are obtained by administering two or three subtests, respectively, from the WIAT-4.

Subtests

The WIAT-4 Dyslexia Index: Grades PK–3 includes two subtests:

  • Word Reading
  • Phonemic Proficiency

This composite is available for students in Pre-kindergarten through Grade 3.
The WIAT-4 Dyslexia Index: Grades 4–12+ includes three subtests:

  • Word Reading
  • Phonemic Proficiency
  • Orthographic Fluency

This composite is available for students in Grades 4–12 as well as adults up to Age 50.

WIAT-4 Dyslexia Index Subtests

  • PK–3: Word Reading, Phonemic Proficiency
  • 4–12+: Word Reading, Pseudoword Decoding, Orthographic Fluency

In addition to performance-based subtests, the WIAT-4 Dyslexia Index asks the examiner to document risk factors for dyslexia (e.g., family history of dyslexia) and exclusionary factors that may add to or lead away from a dyslexia risk classification (e.g., instructional, environmental/economic, or physical health factors).

Reporting

Standalone report or part of a comprehensive WIAT-4 evaluation report
The report includes: History and Background Considerations, Dyslexia Index Summary Table, Dyslexia Index Graphical Profile, Subtest Standard Score Differences, an Interpretive Statement, and Suggested Next Steps.

 

Resources

 

Webinars

The following training events are available for WIAT-4 Dyslexia Index Scores.