Which Outcome Measures (OMs) are categorized as both Norm and Criterion referenced?

The outcome measures categorized as both norm-referenced and criterion-referenced are those that can serve dual purposes in assessing development and performance. In the context of the choice, the Peabody Developmental Motor Scales 2 (PDMS-2) and the Pediatric Evaluation of Disability Inventory (PEDI) fit this description.

The PDMS-2 is norm-referenced because it provides scores that can be compared to a normative sample, allowing clinicians to assess where a child stands in relation to their peers. It is also criterion-referenced as it yields information related to specific motor skills and helps determine if the skills meet a particular standard of development, which is critical in therapeutic planning and intervention.

Similarly, the PEDI operates with both frameworks. It comprises norm-referenced components that reflect how a child's functional performance compares to that of other children. Additionally, it encompasses criterion-referenced elements by focusing on specific skills and abilities necessary for daily living, enabling healthcare providers to evaluate a child’s functional capabilities against established benchmarks.

These characteristics make PDMS-2 and PEDI instrumental in both comparing a child's development to peers and measuring against established developmental expectations, thus justifying their classification as both norm and criterion referenced.