This paper reviews some of the literature relating to traditional and contemporary motor developmental theories. In particular, focused on reference to dynamical systems model. Current researchhas shown that some of our ideas regarding a normal motor development sequence have been incomplete. A normal motor developmental progression seems not only to move in overlapping sequences but also to demonstrate great variability in the age that a motor milestone emerges. All of the previous research ideas regarding development blend very well with the new dynamic systems theory of motor control. With the dynamic systems theory, there are many circular loops and levels of control that cannot only work independently. But they can also work interactively with each other. This theory suggests an interaction in the progression of all systems and subsystems that determines when a motor skill appears and what the quality from that a motor skill. The theories presented in the original writings regarding these neurophysiological treatment approaches need to be reviewed and updated to foster improvement of our treatment techniques and to better analyser treatment efficacy. And many issues must be considered when determining whether to follow a normal motor developmental sequence for treatment planning and implementation.