The term research based melodies as it is used in M.B.C.T. refers specifically to the melodies tested in the original randomized controlled trial on M.B.C.T.
These melodies are available in our Level 1, Level 2, and First Signs apps as well as in the M.B.C.T. Therapy Kit. The melodies follow the general rule of one note per syllable and a different melody for each word. Our supplemental apps meant for children who are verbal do not necessarily follow this rule.