title: The motor learning strategy instrument:  interrater reliability within usual and virtual reality physical therapy interventions.
abstract: OBJECTIVE
  To evaluate and compare the interrater reliability of the Motor Learning Strategy Rating Instrument (MLSRI) within usual and virtual reality (VR) interventions for children with acquired brain injury.
  
  
  METHODS
  Two intervention sessions for each of 11 children (total, 22) were videotaped; sessions were provided by 4 physical therapists. Videotapes were divided into usual and VR components and rated by 2 observers using the MLSRI. A generalizability theory approach was used to determine interrater reliability for each intervention.
  
  
  RESULTS
  Interrater reliability for usual interventions was high for the MLSRI total score (g-coefficient, 0.81), whereas it was low for the VR total score (g-coefficient, 0.28); MLSRI category g-coefficients varied from 0.35 to 0.65 for usual and from 0.17 to 0.72 for VR interventions.
  
  
  CONCLUSIONS
  Adequate reliability was achieved within ratings of usual interventions; however, challenges related to MLSRI use to rate VR-based interventions require further evaluation.
authors.affiliation: School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada. levacde@mcmaster.ca
authors.forename: Danielle
authors.initials: D
authors.lastname: Levac
authors.forename: Cheryl
authors.initials: C
authors.lastname: Missiuna
authors.forename: Laurie
authors.initials: L
authors.lastname: Wishart
authors.forename: Carol
authors.initials: C
authors.lastname: DeMatteo
authors.forename: Virginia
authors.initials: V
authors.lastname: Wright
mesh_terms: D000293:Adolescent; D001930:Brain Injuries / Q000534:rehabilitation*; D002648:Child; D003199:Computer Systems; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D015588:Observer Variation; D026741:Physical Therapy Modalities / Q000295:instrumentation*; D015203:Reproducibility of Results; D014584:User-Computer Interface; D063367:Virtual Reality Exposure Therapy / Q000295:instrumentation*