title: Reliability of the school AMPS measures.
abstract: OBJECTIVE
  The purpose of this study was to use a variety of methods to evaluate and cross-validate the reliability estimates of the quality of schoolwork performance measures in the School Version of the Assessment of Motor and Process Skills (School AMPS) (1).
  
  
  METHODS
  Split-half reliability was estimated based on School AMPS data from 6 194 students who had performed at least two school AMPS tasks. Two different split-half methods were used: splitting the School AMPS items vertically and splitting them horizontally. The Rasch equivalent of Cronbach's alpha for the full School AMPS evaluation and standard error of measurement (SEm) were also considered.
  
  
  RESULTS
  All three methods yielded high reliability coefficient estimates (r ≥ 0.70) and overall SEm was low.
  
  
  CONCLUSIONS
  From a practice perspective, the results of this study are of clinical importance as they provide evidence that occupational therapists can have confidence in the consistency of the School AMPS measures when they are used in the process of making decisions about individual students, planning interventions, and later performing follow-up evaluations to measure the outcome.
authors.affiliation: Department of Community Medicine and Rehabilitation, Division of Occupational Therapy, Umeå University, Sweden. michaela.munkholm@occupther.umu.se
authors.forename: Michaela
authors.initials: M
authors.lastname: Munkholm
authors.forename: Britta
authors.initials: B
authors.lastname: Löfgren
authors.forename: Anne G
authors.initials: AG
authors.lastname: Fisher
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009788:Occupational Therapy / Q000379:methods*; D011597:Psychomotor Performance; D015203:Reproducibility of Results; D012574:Schools; D055815:Young Adult