title: Factor structure of the four motor-free scales of the Developmental Test of Visual Perception, 2nd edition (DTVP-2).
abstract: BACKGROUND
  Visual-perceptual skills of children are often assessed using the Developmental Test of visual Perceptual Skills-2, 2nd Edition (DTVP-2).
  
  
  OBJECTIVE
  The factor structure of the four motor-free DTVP-2 subscales was examined.
  
  
  METHODS
  The scores from a sample of 356 healthy children (171 boys and 185 girls) ages 5 to 11 years were used to complete a principal components factor analysis of the 4 subscales.
  
  
  RESULTS
  The position-in-space subscale had items load on six factors. The figure ground subscale had items load on five factors. The visual closure scale and form constancy subscales both had four factors. When the four DTVP-2 subscales were combined to form one overall motor-free visual perceptual scale, the items loaded on 21 factors.
  
  
  CONCLUSIONS
  The DTVP-2 and its four motor-free subscales exhibited multidimensionality instead of the expected unidimensional visual-perceptual constructs.
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, Frankston, Victoria 3163. ted.brown@med.monash.edu.au
authors.forename: Ted
authors.initials: T
authors.lastname: Brown
authors.forename: Sylvia
authors.initials: S
authors.lastname: Rodger
authors.forename: Aileen
authors.initials: A
authors.lastname: Davis
mesh_terms: D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D002658:Developmental Disabilities / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D015203:Reproducibility of Results; D014786:Vision Disorders / Q000175:diagnosis*; D014787:Vision Tests / Q000379:methods*; D014796:Visual Perception