Studies described as above tend to focus on one single musical
phenomenon, as in Moog’s case, responses to sound. Such an approach
however, might be subject for discussion, for to what extent can research,-
executed on a single aspect of musicality-, lay the foundation for a general
theory of musical development? Possibly one-dimensional studies such as
Moog’s, should best be regarded of as ‘augmentation’: multiple studies on a
variety of musical behaviours together may form a foundation for a general
(stage-)theory on musical development.