The Psychometric Properties of the Structured Preschool Participation Observation (SPO)

Aims: To evaluate the validity and reliability of the Structured Preschool Participation Observation (SPO), based on the COnsensus-based-Standards for the selection of health Measurement INstruments. The SPO development was based on biopsychosocial and ecological models to evaluate children's participation in play, learning and social occupational areas. Methods: Following the establishment of content validity, construct validity using factor analysis and reliability were examined among 250 preschool children with typical development (TD). The known-groups procedure was used, comparing 88 children with developmental disabilities (DD), who attended special educational settings with the TD children. Results: Three factors accounted for 68% of the variance. High internal consistency (alpha>.812) was found, as well as a significant moderate-to-high inter-rater reliability in most areas. Children with TD scored significantly higher than children with DD with small to large effect sizes. Conclusions: The SPO appears to be a suitable measure for assessing children's participation in preschool activities through structured observation. Further studies are needed to further establish its psychometric properties, along with using additional scales of enjoyment and/or involvement and self-care activities. The SPO may assist in generating intervention goals for children with limitations in participation and may complement information gathered from parents.