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!

Free trial codes now available!

Administer and score the Sensory Processing Measure (SPM) or Sensory Processing Measure–Preschool (SPM-P) online.



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Free trial codes now available!

PPA Scale Now Available!

By Kathleen T. Williams

Introducing the NEW Phonological and Print Awareness Scale (PPA Scale). This research-based test accurately measures early literacy skills and allows examiners to easily monitor progress over time.


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PPA Scale Now Available!

Clinical Workshop Spaces Available

Register today for our July ADOS-2 Clinical Workshop in Portland, OR or view the full schedule of available trainings.

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Clinical Workshop Spaces 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

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!

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