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Cross-regional validation of the school version of the assessment of motor and process skills
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Occupational Therapy.
AMPS Project International, Fort Collins, CO.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation.
2010 (English)In: American journal of occupational therapy, ISSN 0272-9490, Vol. 64, no 5, 768-775 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE.: The objective was to determine whether the School Version of the Assessment of Motor and Process Skills (School AMPS) is valid when used to evaluate students in different world regions.

METHOD.: Participants were 984 students, ages 3–13 yr, from North America, Australia and New Zealand, United Kingdom, and the Nordic countries, matched for age and diagnoses. We used FACETS many-faceted Rasch analyses to generate item difficulty calibrations by region and evaluate for significant differential item functioning (DIF) and differential test functioning (DTF).

RESULTS.: Four School AMPS items demonstrated DIF but resulted in no DTF.

CONCLUSION.: This study provided support for occupational therapists using the School AMPS to evaluate students' quality of schoolwork task performances across regions because the School AMPS measures are free of bias associated with world region.

Place, publisher, year, edition, pages
Bethesda, MD: The American Occupational Therapy Association , 2010. Vol. 64, no 5, 768-775 p.
Keyword [en]
cross-regional comparison, Rasch measurement, differential item functioning, differential test functioning, students
National Category
Occupational Therapy
Research subject
Occupational therapy
Identifiers
URN: urn:nbn:se:umu:diva-36313DOI: 10.5014/ajot.2010.09041ISI: 000208712200011OAI: oai:DiVA.org:umu-36313DiVA: diva2:353635
Available from: 2010-09-28 Created: 2010-09-28 Last updated: 2011-03-16Bibliographically approved
In thesis
1. Occupational performance in school settings: evaluation and intervention using the school AMPS
Open this publication in new window or tab >>Occupational performance in school settings: evaluation and intervention using the school AMPS
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Background: This thesis is was designed to evaluate aspects of reliability and validity of the School Version of the Assessment of Motor and Process Skills (School AMPS) (Fisher, Bryze, Hume, & Griswold, 2007), an observation-based evaluation of quality of occupational performance when children perform schoolwork tasks in school settings. The long term goal was to contribute to knowledge about children at risk or with mild disabilities who experience difficulties with occupational performance in school settings, and describe how the School AMPS can be used when a true top−down process of planning and implementing school-based occupational therapy services is implemented in a Swedish context.

Methods: In Study I, two different split-half methods and were used to estimate reliability of the School AMPS measures. These were cross-validated using Rasch equivalent of Cronbach’s alpha. The standard error of measurement (m) was also calculated. In Studies II and III, many-facet Rasch analyses and/or relevant inferential statistics (e.g., ANOVA, tests) were used to examine for evidence of validity based on (1) internal structure related to differential item functioning (DIF), (2) relations to other variables (sensitivity) in terms of comparing groups (typically-developing children vs. children with mild disabilities), and (3) consequences of testing (benefits of testing) in terms of test fairness. In Study IV, ANOVA and tests were used to examine relations to other variables in terms of sensitivity of the School AMPS measures for detecting change based on repeated School AMPS evaluations pre- and post-interventions.

Results: The three methods for estimating reliability of the School AMPS measures yielded high reliability coefficient estimates (≥0.73) and low ms. Minimal DIF was identified, and despite minimal DIF, the School AMPS measures were found to be free of differential test functioning. The School AMPS measures were sensitive enough to detect differences between groups as well as changes following consultative occupational therapy services provided in natural school settings.

Conclusions: The results support the reliability and validity of the School AMPS scales and measures when used to evaluate quality of occupational performance in school settings. The results are also of clinical importance as they provide evidence that occupational therapists can have confidence in the School AMPS measures when they are used in the process of making decisions about individual students, planning interventions, and later perform follow-up evaluations to measure the outcomes. We also have objective evidence that children with mild disabilities demonstrate diminished quality of "doing" when performing schoolwork tasks. The potential long term benefits of such evidence may be to support or justify the need for children with mild disabilities to receive occupational therapy services within school settings in Sweden; and through collaboration with teachers, plan and implement better targeted and more effective interventions.

Place, publisher, year, edition, pages
Umeå: Umeå universitet, 2010. 110 p.
Series
Umeå University medical dissertations, ISSN 0346-6612 ; 1393
Keyword
Occupational therapy, Assessment, Rasch measurement, Children, schoolwork performance, Differential item functioning, Differential test funktioning, Outcomes, Efficacy of intervention, school-based practice, instrument development
National Category
Occupational Therapy
Research subject
Occupational therapy
Identifiers
urn:nbn:se:umu:diva-38108 (URN)978-91-7459-121-7 (ISBN)
Public defence
2010-12-16, Vårdvetarhusets aula, Umeå Universitet, Umeå, 21:21 (Swedish)
Opponent
Supervisors
Funder
Swedish Research Council
Available from: 2010-12-02 Created: 2010-11-24 Last updated: 2010-12-03Bibliographically approved

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Munkholm, MichaelaLöfgren, BrittaFisher, Anne G.
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