title: Factor structure of four visual-motor instruments commonly used to evaluate school-age children.
abstract: OBJECTIVE
  Having access to high-quality, rigorously developed, valid visual-motor integration assessment tools is the first step in the process of providing effective clinical services to children presenting with visual-motor integration problems. The aim of this study was to examine the factor structure of four visual-motor integration instruments through factor analysis.
  
  
  METHODS
  The participants included 400 children ages 5 to 12, recruited from six schools in the Melbourne metropolitan area, Victoria, Australia. Children completed the Developmental Test of Visual-Motor Integration (VMI), Test of Visual-Motor Integration (TVMI), Test of Visual-Motor Skills-Revised (TVMS-R), and Slosson Visual-Motor Performance Test (SVMPT). The factor analysis was completed using SPSS.
  
  
  RESULTS
  Results indicated that the VMI displayed six factors; TVMI, three factors; TVMS-R, four factors; and SVMPT, three factors.
  
  
  CONCLUSIONS
  The VMI, TVMI, TVMS-R, and SVMPT exhibited multidimensionality, and it is recommended that the instruments be revised to enhance their construct validity and unidimensionality.
authors.affiliation: Department of Occupational Therapy, School of Primary Health Care, Faculty of Medicine, Nursing, and Health Sciences, Monash University-Peninsula Campus, Building G, 4th Floor, McMahons Road, P.O. Box 527, Frankston, Victoria 3199 Australia. ted.brown@med.monash.edu.au
authors.forename: Ted
authors.initials: T
authors.lastname: Brown
authors.forename: Carolyn
authors.initials: C
authors.lastname: Unsworth
authors.forename: Carissa
authors.initials: C
authors.lastname: Lyons
mesh_terms: D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009788:Occupational Therapy / Q000379:methods*; D011596:Psychomotor Disorders / Q000175:diagnosis*; D011597:Psychomotor Performance; D015203:Reproducibility of Results