Now Available!

While maintaining the strengths of the original test, the CASL-2 offers new enhancements to optimize validity, functionality, and ease of use. 

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Now Available!

Now Available !

The OPUS™ evaluates listening comprehension and displays a person’s ability to integrate and apply many of the skills measured by the CASL-2.

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Now Available !

Now Available Online!

By John N. Constantino, MD

Aligned with the DSM-5 diagnostic criteria for ASD, this comprehensive assessment allows you to accurately identify social impairment associated with ASDs and quantifies its severity.

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Now Available Online!

Clinical Workshop Spaces Still Available

Register today for our December ADOS-2 Clinical Workshop in Chicago, IL.

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Clinical Workshop Spaces Still Available

ABAS-3 Now Available!

Retaining all features that made the ABAS-II the preferred instrument for evaluating adaptive behavior, the ABAS-3 is now even easier to administer and score.

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ABAS-3 Now Available!

SMALSI College Form Now Available!

“If you improve study skills, learning strategies, reading comprehension, and test-taking behavior of students, their academic achievement will also improve."



Author Cecil Reynolds, PhD

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SMALSI College Form Now Available!

FREE online scoring!

By Kathleen T. Williams

This research-based test accurately measures early literacy skills and allows examiners to easily monitor progress over time.

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FREE online scoring!

SPM Quick Tips Now Available!

By Diana A. Henry, MS, OTR/L, FAOTA  

The new SPM Quick Tips (QT) is a collection of strategies for integrating sensory-based activities into a child’s everyday life.

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SPM Quick Tips Now Available!

Introducing GOAL

by Lucy Jane Miller, PhD, OTR, Thomas Oakland, PhD, and David S. Herzberg, PhD

This innovative assessment of functional motor skills consists of seven Activities based on real occupations of a child's daily life.

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Introducing GOAL

Research Participation >

Join us in our effort to standardize new tests and revisions, and you may be eligible for free WPS test materials or monetary payment.

Graduate School Alliance Program (GSAP) >

If you are a university-based instructor or trainer, WPS offers a selection of complimentary products for use in scholarly courses and training.

Training & Workshops >

Gain valuable experience and learn how to use and interpret select WPS tests.

  • ADOS-2 Clinical Workshop
  • SI Certification Program
  • Third Party Training