Pediatric Evaluation of Disability Inventory™


The PEDI-CAT measures abilities in the three functional domains of Daily Activities, Mobility and Social/Cognitive.  The PEDI-CAT’s Responsibility domain measures the extent to which the caregiver or child takes responsibility for managing complex, multi-step life tasks.  The PEDI-CAT can be used across all clinical diagnoses and community settings.  As with the original paper-pencil PEDI, the PEDI-CAT can be administered by professional judgment of clinicians or educators who are familiar with the child or by parent report.

This computerized adaptive version of the PEDI is intended to provide an accurate and precise assessment while increasing efficiency and reducing respondent burden. The PEDI-CAT software utilizes Item Response Theory (IRT) statistical models to estimate a child’s abilities from a minimal number of the most relevant items or from a set number of items within each domain.  All respondents begin with the same item in each domain in the middle of the range of difficulty or responsibility and the response to that item then dictates which item will appear next (a harder or easier item), thus tailoring the items to the child and avoiding irrelevant items. The CAT program then displays the results instantly.

Intended Population

The PEDI-CAT is designed for use with  children and youth (birth through 20 years of age) with a variety of physical and/or behavioral conditions.


• Identification of functional delay
• Examination of improvement for an individual child after intervention
• Evaluation and monitoring of group progress in program evaluation and research


• Normative standard scores, provided as age percentiles and T scores, are available for 21
age groups (intervals of one year).
• Scaled scores are based on data from the normative and disability samples.
• Each PEDI-CAT domain is self-contained and can be used separately or along with the other domains.
• Age, gender and mobility device filters prevent irrelevant items from being presented.
• Items are worded using everyday language and clear examples.
• Illustrations of Daily Activities and Mobility items are included to facilitate understanding of the item intent.
• The PEDI-CAT is available  for iPads and PCs. Each download includes English and Spanish languages

. Visit Website for more information about the PEDI-CAT, including the domains, scoring, and ordering the instrument.



Pediatric Evaluation of Disability Inventory™

The original PEDI™ is a descriptive measure of a child’s current functional performance and can track changes over time. The PEDI™ measures both capability and performance of functional activities in three content domains:

• Self-care
• Mobility
• Social function

It can be used as a comprehensive clinical assessment of key functional capabilities and performance in children between the ages of six months and seven years. The PEDI™ can be used to evaluate older children with functional abilities that are less than those expected of a 7-year-old child without disabilities.

The PEDI™ is available for order through Pearson Education, Inc.


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