Hatfield, Warren, An Investigation of the Diagnostic Validity of the Musical Aptitude Profile with Respect to Instrumental Performance (doctoral dissertation, University of Iowa, 1967).
2.
Lee, Robert, An Investigation of the Use of the Musical Aptitude Profile with College and University Freshman Music Students (doctoral dissertation, University of Iowa, 1966).
3.
Tarrell, Vernon, An Investigation of the Validity of the Musical Aptitude Profile (doctoral dissertation, University of Iowa, 1964).
4.
Young, William, “The Role of Musical Aptitude, Intelligence, and Academic Achievement in Predicting the Musical Attainment in Elementary Instrumental Music Students,”Journal of Research in Music Education (Winter 1971).
5.
Young, William, “Musical Aptitude Profile Norms for College and University Nonmusic Majors,”Journal of Research in Music Education (Fall 1972).
