title: Development and evaluation of the psychometric properties of the Adolescent Motor Competence Questionnaire (AMCQ) for Adolescents.
abstract: BACKGROUND
  There are no valid and reliable self-report measures designed to identify level of motor competence and suspected motor difficulties among 12-18year old adolescents.
  
  
  OBJECTIVE
  This paper reports the development and evaluation of a self-report questionnaire (Adolescent Motor Competence Questionnaire; AMCQ) to address this need.
  
  
  METHODS
  The project proceeded in 3 phases; (A) item development, (B) content evaluation, and (C) examination of reliability and validity of the final questionnaire. Each phase was informed by criteria A and B in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), comments from a sample of 10 adolescents aged between 12 and 18 years with a range of movement skills, key informants and international experts. A convenience sample of 38 adolescents completed the final version of the AMCQ. The McCarron Assessment of Neuromuscular Development (MAND) was used to investigate concurrent validity.
  
  
  RESULTS
  The final version of the AMCQ comprised 26 items scored using a 4 point Likert scale with a maximum score of 104. Analyses revealed the questionnaire has an acceptable internal consistency (0.902) and 7day test-retest reliability (0.956). A moderate positive correlation between the AMCQ and the MAND of 0.491 (p<0.002) provides some evidence of concurrent validity.
  
  
  CONCLUSIONS
  The development of the AMCQ was exploratory in nature and has the potential to be a reliable and valid tool for measuring motor competence in Australian adolescents.
authors.affiliation: Institute for Health Research, University of Notre Dame Australia, Australia. Electronic address: amanda.timler1@my.nd.edu.au.
authors.forename: Amanda
authors.initials: A
authors.lastname: Timler
authors.affiliation: School of Health Sciences, University of Notre Dame Australia, Australia.
authors.forename: Fleur
authors.initials: F
authors.lastname: McIntyre
authors.affiliation: Department of Special Educational Needs, Faculty of Behavioural and Social Sciences, University of Groningen, The Netherlands.
authors.forename: Marja
authors.initials: M
authors.lastname: Cantell
authors.affiliation: Epidemiologist, Alberta Perinatal Health Program, Calgary, Canada.
authors.forename: Susan
authors.initials: S
authors.lastname: Crawford
authors.affiliation: Institute for Health Research, University of Notre Dame Australia, Australia.
authors.forename: Beth
authors.initials: B
authors.lastname: Hands
mesh_terms: D000293:Adolescent; D001315:Australia; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D019957:Motor Skills Disorders / Q000175:diagnosis*; D011594:Psychometrics; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires
keywords: Adolescence; Adolescents; Assessment; DCD; Developmental Coordination Disorder; Movement competence; Self report