Validation of the Revised Knox Preschool Play Scale for the Brazilian Population.
Amanda Mota Pacciulio Sposito, Jair L F Santos, Luzia Iara Pfeifer
PMID 31191183WHAT IT FOUND
Brazilian Revised Knox Preschool Play Scale gave mixed results.
Many play items were rated clearly, but some were not rated the same by two raters or did not score consistently. Therapists should not rely on it without item review.
Key findings
01Between raters, 13 topics had reasonable agreement and 4 topics had poor agreement.
02Good internal consistency was found for 19 of 36 dimensions and 23 of 36 item dimensions, with Cronbach's alpha values from 0.70 to 0.95.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
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What it does not show
The sample was convenience-based, with children recruited by teachers from nurseries, daycares, and preschools in two municipalities in São Paulo. All children had no motor, cognitive, or sensory impairment, so the results do not show how the scale performs in children with disabilities. Agreement between raters was reasonable for 13 topics and poor for 4 topics, so scoring was not consistent enough for confident clinical use. Some domains had Cronbach's alpha values lower than 0.70 or higher than 0.95, which the authors said was not satisfactory. The paper reports no clinical outcomes, only agreement and internal consistency.
The easy way to misread this
Do not conclude that the Brazilian Revised Knox Preschool Play Scale is ready for confident clinical use. Some items were not rated the same by two trained raters, and some domains did not score consistently, so the authors said adjustments are still needed.