Establishment of Reliability of the Occupation-Based Practice Assessment

The profession's foundational construct, occupation, is therapeutically effective, but there remains inconsistent use as a therapeutic medium. A psychometrically strong tool can measure and maximize the use of occupation. This study establishes preliminary psychometric properties of the Occupation-Based Practice Assessment (OBPA). This methodological study tested inter-rater reliability using simulated video cases to examine the OBPA. Overall reliability was acceptable at .868. All subsections were acceptable including Meaning and Purposeful Occupation (.871), Therapeutic Intent (.819), and Engaged Participation (.807). Two items, Context (.946) and Actual Doing (.981), demonstrated excellent reliability; while three items, Meaning (.747), Adaptation (.799), and Participation (.735), fell slightly below the acceptable level. Preliminary investigation of the OBPA reveals acceptable inter-rater reliability and suggests potential for use following additional in-vivo testing to measure therapeutic interactions to enhance student learning, optimize clinical practice, facilitate professional development, evaluate programs, and quantify occupation-based practice in research.