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Evaluation in Ayres Sensory Integration® Praxis Tests: Construct Validity and Internal Reliability

Zoe Mailloux¹, Patricia Grady-Dominguez², Anita Bundy³

¹Zoe Mailloux, OTD, OTR/L, FAOTA, is Adjunct Associate Professor, Department of Occupational Therapy, College of Rehabilitation Sciences, Thomas Jefferson University, Philadelphia, PA; zoemailloux@gmail.com.

The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association

|August 17, 2023

Abstract

Importance:

Assessment of praxis using valid and reliable measures is important for understanding factors affecting occupational participation.

Objective:

To evaluate evidence of construct validity and internal reliability of data gathered with four newly developed praxis tests.

Design:

Comparative descriptive design.

Setting:

Homes, schools, and therapy practices across the United States.

Participants:

A control group consisting of 163 children without any concerns or diagnoses and a case group of 145 children with sensory integration difficulties, ages 3 to 12 yr.

Outcomes And Measures:

Rasch analyses to evaluate construct validity, and Student's t tests to evaluate group differences.

Results:

Total test scores and most item scores conformed to Rasch model expectations. Group differences were significant; the control group scored higher. Internal reliability was strong.

Conclusions And Relevance:

Findings support the validity and internal reliability of the four praxis tests. What This Article Adds: This study adds to the growing body of evidence for validity and reliability of the Evaluation in Ayres Sensory Integration® tests.

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