title: Validation of the one pass measure for motivational interviewing competence.
abstract: OBJECTIVE
  This paper examines the psychometric properties of the OnePass coding system: a new, user-friendly tool for evaluating practitioner competence in motivational interviewing (MI). We provide data on reliability and validity with the current gold-standard: Motivational Interviewing Treatment Integrity tool (MITI).
  
  
  METHODS
  We compared scores from 27 videotaped MI sessions performed by student counselors trained in MI and simulated patients using both OnePass and MITI, with three different raters for each tool. Reliability was estimated using intra-class coefficients (ICCs), and validity was assessed using Pearson's r.
  
  
  RESULTS
  OnePass had high levels of inter-rater reliability with 19/23 items found from substantial to almost perfect agreement. Taking the pair of scores with the highest inter-rater reliability on the MITI, the concurrent validity between the two measures ranged from moderate to high. Validity was highest for evocation, autonomy, direction and empathy.
  
  
  CONCLUSIONS
  OnePass appears to have good inter-rater reliability while capturing similar dimensions of MI as the MITI. Despite the moderate concurrent validity with the MITI, the OnePass shows promise in evaluating both traditional and novel interpretations of MI.
  
  
  CONCLUSIONS
  OnePass may be a useful tool for developing and improving practitioner competence in MI where access to MITI coders is limited.
authors.affiliation: Faculty of Medical Science Anglia Ruskin University, Cambridge, UK. Electronic address: fiona.mcmaster@anglia.ac.uk.
authors.forename: Fiona
authors.initials: F
authors.lastname: McMaster
authors.affiliation: Department of Health Behavior & Health Education, School of Public Health, University of Michigan, Ann Arbor, USA.
authors.forename: Ken
authors.initials: K
authors.lastname: Resnicow
mesh_terms: D002983:Clinical Competence / Q000592:standards*; D003376:Counseling; D004521:Educational Measurement / Q000379:methods*; D004645:Empathy; D005240:Feasibility Studies; D006801:Humans; D007406:Interview, Psychological / Q000592:standards*; D007407:Interviews as Topic; D062405:Motivational Interviewing / Q000592:standards*; D011594:Psychometrics / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013334:Students / Q000523:psychology*; D011795:Surveys and Questionnaires; D013637:Tape Recording
keywords: Motivational interviewing; Practitioner competence; Validation