title: Cross-regional validation of the School Version of the Assessment of Motor and Process Skills.
abstract: 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.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Community Medicine and Rehabilitation, Division of Occupational Therapy, Umeå University, SE-901 87 Umeå, Sweden. michaela.munkholm@occupther.umu.se
authors.forename: Michaela
authors.initials: M
authors.lastname: Munkholm
authors.forename: Brett
authors.initials: B
authors.lastname: Berg
authors.forename: Britta
authors.initials: B
authors.lastname: Löfgren
authors.forename: Anne G
authors.initials: AG
authors.lastname: Fisher
mesh_terms: D002648:Child; D004521:Educational Measurement; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D009788:Occupational Therapy / Q000379:methods; D012574:Schools; D013334:Students; D013647:Task Performance and Analysis