The purpose of this study was to investigate developmental music aptitude with a broader sample in order to propose national norms. Research questions were: 1) To what extent are published Primary Measures of Music Aptitude (PMMA) norms different from those established using a current sample? 2) Are there comparative differences in PMMA item…

The majority of large-scale assessments develop various score scales that are either linear or nonlinear transformations of raw scores for better interpretations and uses of assessment results. The current formula for coefficient alpha (a; the commonly used reliability coefficient) only provides internal consistency reliability estimates of raw…